This report covers the western area of the Askrigg. Block, namely the upper part of Wensleydale (west of. Hawes), Widdale, Dentdale,. Kingsdale and the upper.
a,__
-
-
! c
Natural Environment Institute
-_
Mineral
Research Council
of Geological
Sciences
Reconnaissance
Programme
Report .
/--
\\ t
-
A report prepared
for the Department
of Industry
This report relates to work carried out by the institute of Geological Sciences on behalf of the Department of Industry. The information contained herein must not be published without reference to the Director, Institute of Geological Sciences. D. Ostle Programme Institute of Nicker Hill, Nottingham
Manager Geological Sciences Keyworth, NG12 5GG
No. 64 A mineral reconnaissance of the Dent-lngleton area of the Askrigg Block, northern England
I I I I I I 1 II I I I I I I I 1 1
.- I .-
INSTITUTE
OF GEOLOGICAL
Natural Environment
SCIENCES
Research Council
Mineral Reconnaissance Programme
A mineral reconnaissance of the Dent-lngleton area of the Askrigg Block, northern England
Report No. 64
J. H. Bateson, BSc, MIMM C. C. Johnson, PhD
I I
I I
0 Crown copyright London 1983
1983 A report prepared for the Department
of Industry
Mineral Reconnaissance Programme Reports
47
An airborne geophysical survey of the Whin Sill between Haltwhistle and Scats’ Gap, south Northumberland
20
Geophysical field techniques for mineral exploration
21
A geochemical drainage survey of the Fleet granitic complex and its environs
48
Mineral investigations near Bodmin, Cornwall. Part 3-The Mulberry and Wheal Prosper area
22
Geochemical and geophysical investigations northwest of Llanrwst, North Wales
49
Seismic and gravity surveys over the concealed granite ridge at Bosworgy, Cornwall
23
Disseminated sulphide mineralisation at Garbh Achadh, Argyllshire, Scotland
50
Geochemical drainage survey of central Argyll, Scotland
24
Geophysical investigations along parts of the Dent and Augill Faults
51
A reconnaissance geochemical survey of Anglesey
52
25
Mineral investigations near Bodmin, Cornwall. Part 1 -Airborne and ground geophysical surveys
Miscellaneous investigations on mineralisation in sedimentary rocks
53
26
Stratabound barium-zinc mineralisation in Dalradian schist near Aberfeldy, Scotland; Preliminary report
Investigation of polymetallic mineralisation in Lower Devonian volcanics near Alva, central Scotland
54
27
Airborne geophysical survey of part of Anglesey, North Wales
Copper mineralisation near Middleton Tyas, North Yorkshire
55
28
A mineral reconnaissance survey of the Abington - Biggar - Moffat area, south-central Scotland
Mineral exploration in the area of the Fore Burn igneous complex, south-western Scotland
56
Geophysical and geochemical investigations over the Long Rake, Haddon Fields, Derbyshire
29
Mineral exploration in the Harlech Dome, North Wales
57
Mineral exploration in the Ravenstonedale area, Cumbria
30
Porphyry style copper mineralisation at Black Stockarton Moor, south-west Scotland
58
Investigation of small intrusions in southern Scotland
31
Geophysical investigations in the Closehouse - Lunedale area
59
32
Investigations at Polyphant, near Launceston, Cornwall
Stratabound arsenic and vein antimony mineralisation in Silurian greywackes at Glendinning, south Scotland
60
Mineral investigations at Carrock Fell, Cumbria. Part 1 -Geophysical survey
Mineral investigations at Carrock Fell, Cumbria. Part 2 -Geochemical investigations
61
Mineral reconnaisance at the Highland Boundary with special reference to the Loch Lomond and Aberfoyle areas
33 34
Results of a gravity survey of the south-west margin of Dartmoor, Devon
35
Geophysical investigation of chromite-bearing ultrabasic rocks in the Baltasound -Hagdale area, Unst, Shetland Islands
62
Mineral reconnaissance in the Northumberland Trough
63
36
An appraisal of the VLF ground resistivity technique as an aid to mineral exploration
Exploration for volcanogenic sulphide mineralisation at Benglog, North Wales
64
37
Compilation of stratabound mineralisation in the Scottish Caledonides
A mineral reconnaissance of the Dent-lngleton area of the Askrigg Block, northern England
38
Geophysical evidence for a concealed eastern extension of the Tanygrisiau microgranite and its possible relationship, to mineralisation
39
Copper-bearing intrusive rocks at Cairngarroch Bay, south-west Scotland
40
Stratabound barium-zinc mineralisation in Dalradian schist near Aberfeldy, Scotland; Final report
41
Metalliferous mineralisation near Lutton, Ivybridge, Devon
42
Mineral exploration in the area around Culvennan Fell, Kirkcowan, south-western Scotland
43
Disseminated copper-molybdenum mineralisation near Balluchulish, Highland Region
44
Reconnaissance geochemical maps of parts of south Devon and Cornwall
45
Mineral investigations near Bodmin, Cornwall. Part 2-New uranium, tin and copper occurence in the Tremayne area of St Columb Major
Bibliographic reference Bateson, J. H. and Johnson, C. C. 1983. A mineral reconnaissance of the Dent --Ingleton area of the Askrigg Block, northern England Mineral Reconnaissance Programme Rep. Inst. Geol. Sci. , No. 64
46
Gold mineralisation at the southern margin of the Loch Doon granitoid complex, south-west Scotland
Printed in England for the Institute of Geological Sciences by lmediaprint
The Institute of Geological Sciences was formed by the incorporation of the Geological Survey of Great Britain and the Geological Museum with Overseas Geological Surveys and is a constituent body of the Natural Environment Research Council
CONTENTS SUMMARY INTRODUCTION GEOLOGY AND MINERALISATION GEOCHEMICAL Drainage
RECONNAISSANCE
basin reconnaissance
Soil survey of Tow Scar area CONCLUSIONS
AND RECOMMENDATIONS
ACKNOWLEDGEMENTS REFERENCES APPENDIX 1 Locational and analytical data for drainage basin reconnaissance
10
APPENDIX 2 List of high anomalous sediment samples
13
stream
FIGURES Geology map of the Dent - Ingleton area Drainage basin map of the Dent - Ingleton area showing mineralisation and mines in pocket 3 Element means and ranges for stream sediments and panned concentrates 4 Class interval map for barium in stream sediments in pocket 5 Class interval map for copper in stream sediments in pocket 6 Class interval map for lead in stream sediments in pocket 7 Class interval map for zinc in stream sediments in pocket 8 Class interval map for barium in panned concentrates in pocket 9 Class interval map for copper in panned concentrates in pocket 10 Class interval map for lead in panned concentrates In pocket 11 Class interval map for zinc in panned concentrates In pocket 12 Class interval map for fluoride in waters
2
4
in pocket
13 Map outlining four areas of anomalously high results in pocket 14 Soil sample sites at Tow Scar 15 Contour maps of Tow Scar soil geochemistry data 16 Geology and structure of the Tow Scar area, drawn from aerial photographs TABLES 1
Mines and mineral area
shows in the Dent - Ingleton 3
folded metamorphosed steeply unconformity on Ingletonian and Lower Palaeozoic sediments up to rocks outcrop in the Silurian age. These ‘basement’ valleys of the River Greta near Ingleton and the Ribble at Horton-in-Ribblesdale, and in the area adjacent to the Dent Fault NE of Sedburgh. the Carboniferous sequence is The base of represented by the Orton Group (Dakyns and others, 1891), in which is included the major part of the most massive of the limestones in the sequence, the Great Scar Limestone, and which outcrops extensively in the valley bottoms and along the lower slopes of the fells. The upper part of the Great Scar is succeeded by a sequence of regularly alternating thin limestones, shales and sandstones which together calcareous comprise the Alston Group. The limestones, although relatively thin, are persistent and traceable throughout the area and the more arenaceous units are lenticular much less persistent laterally. Arenaceous and sedimentation becomes much more significant higher in the succesion with the sandstones and grits of the Millstone Grit Series forming the capping to the mesalike fells. Locally, minor unconformities occur at the base of this Series. The Carboniferous succession has a gentle regional dip to the NNE. normally of moderate throw, has been Faulting, mapped throughout most of the area but there is an increase in frequency in the north. This is related to the main, approximately E-W oriented, faulting (with related mineralisation) of Swaledale some 2 km beyond the northern margin of the area of investigation. Faults mostly trend NW-NNW and have moderate displacement; disturbance in attitude of affected strata is usually minimal. The major faults that have been used to define the boundaries of the area, the Dent and Craven systems, each have considerable measurable throw and in some areas affect the adjacent rock by oversteepening and contorting of the strata. Apart from the geochemical investigations referred to earlier, the area has not been subject to modern exploration techniques. Some geophysical data are available for the area from the published 1:625 000 scale aeromagnetic map (Institute of Geological Sciences, 1972) and also gravity data from the 1:250 000 scale Bouguer Gravity Anomaly map (Institute of Geological Sciences, 1977). Recorded mineral locations within the area are relatively few in number. Some are known to be associated with faulting though no common regional trend is discernible. Galena, sphalerite and chalcopyrite (or the derived carbonates) are the commonly recorded minerals, with some tluorite anl bgryte localities also known. G;i?gue material is varied, calcite and quartz being the commonest minerals. Table 1 gives details of mines and mineral occurrences in the Dent - Ingleton area.
SUMMARY The western margin of the Askrigg Block has been investigated by regional geochemical reconnaissance. This took the form of a drainage basin survey with the collection of stream sediments (306 samples), panned concentrates (149 samples), and waters (278 samples) over an area of c.450 km2. In addition, following an observation of a moss-like plant with tolerance to high levels of base metals, a soil survey was carried out on Tow Scar, 3 km to the northwest of Ingleton. The drainage basin survey reveals no new major mineralisation though minor mineral shows have been located following investigation of some anomalous sites. The soil survey led to the discovery of minor mineralisation, which suggests that similar occurrences might exist adjacent to the Craven Fault system east of Ingleton. INTRODUCTION This report covers the western area of the Askrigg Block, namely the upper part of Wensleydale (west of Hawes), Widdale, Dentdale, Kingsdale and the upper reaches of the Ribble Valley (Figure 1). Generally flatlying or slightly tilted coarse sandstone of Millstone Grit age caps the higher land of the area, the highest peaks of which are Ingleborough (723 m) and Whernside (736 m). Soils range from the poorly drained peats to the very thin soils of the limestone pavement areas. The drainage system occupies broad valleys in which variable amounts of glacial and alluvial material has accumulated. This area was selected for mineral reconnaissance for a number of reasons. There are mineralised areas on the Askrigg Block (i) (e.g. Swaledale and Littondale), and a number of mineralised localities and mines are recorded within the area itself (Figure 2). (ii) Its margins are bounded on two sides by major fault structures both of which are associated with mineral deposits. (iii) Recently published work by Small (1978), and Ineson and Al-Badri (1980, 1981) suggest that the area has some potential for mineralisation. Small (1978), in a study of mineralisation controls in the North Pennines, postulates that part of this area lies close to the source of mineralising fluids which he believes were responsible for the extensive ore-field in Wharfedale and Swaledale. The work of Ineson and Al-Badri is summarised in two publications (1980, 1981) which discuss the data obtained from hydrogeochemical and stream sediment reconnaissance surveys. They demonstrate enhanced values for Zn and Cu in waters in the general area of the present investigation. Stream sediment data also indicate anomalous values (greater than mean plus two standard deviations) for Cu, Co and Ni in the same area. However, these authors were not able to confirm the ‘zonation’ of Small or recognise any pattern similar to that proposed by Dunham and Stubblefield (1944) for the Greenhow area of the Block. GEOLOGY
GEOCI-IBMICAL RECONNAISSANCE
As the area has a well-developed active drainage system, the regional geochemical investigation was undertaken using stream sediment, panned concentrate and water samples. The stream sediments, 306 in total, were obtained using the techniques described by Plant (1971),
AND MINERALISATION
Sediments of Carboniferous age up to and including the Namurian underlie most of the area covered by this investigation (Figure 1). They rest with marked 1
I I I I I 1 1 I I I I I I I I I 1
“00
‘80
KEY PEAMIAI
‘SC
pJ
_ _ __
0
PRE-CARBONIFEROU!
Faultr
1
om 370
Figure 1
Geology
map of the Dent - Ingleton
area.
380
-
Townr
2
molar 3
khmatraa
Table 1
Mines and mineral
Number *
Locality
1
Fossdale
2, 3, 4
shows in the Dent - Ingleton
area.
Grid Reference
Descriptiont
386 494
Disused mine. Ore from Main or Underset Limestone Gangue predominatly calcite and fluorite with rare baryte(?). Sphalerite, chalcopyrite and rare galeana.
Lover Gill
388 496
Disused mine. NNE vein with large downthrow NW. Barytes, calcite, fluorspar with galena.
5, 6
Turner
378 493
Mineralisation found along planes (predominantly 070/66’N) in siliceous limestone (Underset Chert). Chalcopyrite in coarse quartz with secondary copper carbonates.
7, 8
AisgilI Moor
377 496
NE trending fault occupied chalcopyrite.
9
Hazel Gill
377 499
ENE and WNW faults occupied by veins. Main gangue ’ barytes and calcite with chalcopyrite.
10
Tow Scar
368 475
NNW trending calcite veins with chalcopyrite and copper carbonates. Associated with limestone containing siliceous nodules.
11
Blea Gill
375 489
NE trending quartz vein containing Simonstone Limestone.
12
Bardale Head
386 484
Old workings.
NE vein. Chalcopyrite
13
Wether Fell
387 486
Old workings.
ENE vein. Calcite
14, 15
Kingsdale
371 479
Veins. Calcite,
Gill
Hill
Head
baryte
to the
by vein. Quartz with
chalcopyrite
in
and galena.
and galena.
and chalcopyrite.
16
Mossdale Head
382 491
Sheets of well-formed, yellow fluorspar with chalcopyrite occurring along bedding planes.
17
Clouds Gill
373 499
Disused mine. Ore extracted in narrow guIleys running parallel to strike (NE) in Great Scar/ Robinson Limestone. Calcite and fluorite in veins with galena and chalcopyrite.
18
Head of Great Sled Dale
382 499
Old workings. Quartz, baryte, and abundant malachite.
19
Hush Gutter
383 499
Disused mine. NE vein. Quartz, fluorite and chalcopyrite.
20
Hull Pot
382 474
NW fault. Traces of galena, with calcite and baryte.
21
Beckermonds
387 480
NNE trending chalcopyrite.
22
Southwest
381 482
NE trending
23
South Dodd Fell
384 484
NNE trending
24, 25
West of Ingleborough
372 474
NW to NNW trending chalcopyrite.
* t
Dodd Fell
Number refers to location marked on Figure 2. Compiled from one-inch geological map (sheets observations made on location.
calcite,
sphalerite,
veins in Gayle Limestone
chalcopyrite baryte, chalcopyrite with
lead vein in Main Limestone. lead vein.
40 & 50), Dakyns
and the panned concentrates, 149 in all, by the classical gold panning method to produce about 30 g of concentrate. The stream sediments were analysed by nAS techniques for Cu, Pb, Zn, Ba, Mn and Co at the commercial laboratories of Mather Research Ltd, Rothbury (though Mn and Co are not discussed in this report). The panned concentrates were analysed by XRF, at the laboratories of the Institute in London, for Ce, Ba, Sn, Pb, Zn, Cu, Ca, Ni, Fe? Mn, Ti, Sr and Zr. Additionally 278 samples of surface stream waters were analysed for F by specific ion techniques. In this report only the Ba, Pb, Zn, Cu and Sn values for the panned concentrates are used. All the data from the drainage basin reconnaissance are listed in Appendix 1. A small area underlain by Great Scar limestone adjacent to the North Craven Fault at Tow Scar
fluorspar,
veins. Galena, baryte
and
others
(1890,
and
1891),
and
[368 4751, approximately 3 km to the NW of Ingleton, was selected as an area to be investigated by soil sampling. Interest in this area was stimulated by the report that two plant species (Minuartia verna (L.) Hiern and Thalaspi alpestre) which are characteristically tolerant to high heavy metal levels and are normally associated with the environment of old mine spoil heaps, had been identified from this locality (Dr W. Sledge, Leeds University, oral communication, June 1978). Drainage basin reconnaissance
Data interpretation Data from the drainage basin reconnaissance survey have been processed using the G-EXEC relational data base management system on an IBM 360/195 computer at the 3
Rutherford Laboratories, Didcot. The data are presented and interpreted in the following way:-
4. The Sn data for the panned concentrate samples have been used to indicate artificial contamination - values in excess of 88 ppm Sn (the 92.5 % population interval) are regarded as being indicative of contamination. Having identified high Sn samples, contamination has been further investigated by optical examination of the concentrate samples. Results of such examination are indicated in Appendix 2.
Locational and analytical data are listed in Appendix 1. Element logarithmic means and ranges (range is defined as logarithmic mean 2 2 standard deviations) are given in Figure 3 for the stream sediments and panned concentrates. Elemental abundances are presented as class interval maps (Figures 4 - 12). Three classes are plotted - the lowest class represents the lowest 84 % of the number of samples in the data set, the middle class >84 % to 5000 ppm Zn.
5
.
476
KEY -
-
-
Road
X
Rwer A
J
Track
Trlangulatton
Statlon
Crest of LImestone Escarpment
, c 0
Sampling hnes (ticks are sampling
sites)
Deep so4 samples
475
Figure14 Soil sample sites at Tow Scar. Barium Unlike the previous elements considered, some higher values for barium have been recorded from the topographically lower ground to the SW of Tow Scar from soils overlying rocks of Upper Carboniferous age. It is possible that these areas of high values relate to the poorly developed drainage away from Tow Scar. The maximum barium value (4400 ppm Ba) is associated with high lead and zinc at [36819 476241. At 136824 476071 a value of 3000 ppm Ba is recorded at a site also high in lead.
contents of soils on the limestone plateau is responsible for making the soils of this area less alkaline. High organic values indicated on Figure 15 do not necessarily indicate peat development as the samples analysed were normally obtained from levels below the organic-rich surface horizons. Deep soil samples At two sites shown on Figure 14 deep soil samples were collected in addition to surface samples (i.e. 1250 Contour Intervals 0
I,
metres
369
-476
Figure 15
Contour
maps of Tow Scar soil geochemistry
data.
7
‘77
t
r 472 V
1
0
-
km
1
Figure16 Geology and structure
of the Tow Scar area, drawn from aerial photographs.
faults. The majority of the short linear features are undoubtedly representative of the main jointing patterns observed on the limestone pavements, their lateral extent in many instances seen to be restricted to the outcrop of the limestone. Variations in the observed density of jointing are directly related to the degree of peat development on the limestone.
coincides with high values of Cu, Pb, Zn and Ba in the soils. The area of interest at Tow Scar, with the high soil values for Cu, Pb and Zn, is seen from the published geological map to coincide with a segment of Great Scar Limestone preserved between two main fault elements of the North Craven fault zone. The distribution of the anomalous values seems to be associated with a number of subsidiary faults which trend approximately 055’. It can also be ascertained from the aerial photography that a further area to the east, some 3 km by 1 km with similar structural controls (i.e. Great Scar Limestone bounded by major faults), can be identified and such an area presents itself as a potential target for .further investigation.
Field observations and discussion of results The soil geochemistry results indicated many sites of high base metal content in an area where no metalliferous mineralisation had been reported. An evalution of these data therefore warranted a more detailed examination of the geology of Tow Scar. The most noticeable effect of faulting on Tow Scar is the change in the attitude of the beds of limestone from the gentle regional dip to the NNW to dips in excess of 50’ towards the fault plane (i.e. to the SW). Lithologitally the outcrop is reasonably uniform: massively bedded pale grey limestone with a patchily developed dolomitic facies. In one relatively small area at the northwestern end of the crop the limestone contains irregular nodules and lenses of highly siliceous material which characteristically weather to a honeycomb texture. These are aligned parallel to the lithological banding and are traceable in a zone some 45 m along strike and 5 m in width. This zone is associated with a large number of ramifying veins composed of essential calcite accompanied by chalcopyrite and copper carbonates. Elsewhere on the outcrop veining of any type is less common, but where seen it consists of calcite (frequently iron stained). The predominant direction of these veins is 330-360’ but occasional other directions have been noted. A single calcite vein traceable in a NNW direction over lo-15 m attains a maximum width of 30 cm, and contains chalcopyrite. Dakyns and others (1890) refer to a fault that passes by Hunt’s Cross “...probably without much ‘throw’, but marked by much dun limestone with calcite along its course”. The area of maximum observed vein occurrence 300 m NW of the triangulation station on Tow Scar
CONCLUSIONS AND RECOMMENDATIONS The drainage basin reconnaissance has not indicated any major new mineralisation. The levels of copper, lead, zinc and barium in the stream sediments and panned concentrates are similar to the values expected in such a sedimentary environment. In a reconnaissance exercise in the Lower Carboniferous area of Northumberland, the means and ranges of these elements in the stream sediments are particularly comparable (Bateson and others, 1983). The areas showing anomalous values for one or more elements can be related in most instances to known mineralised faults. Of the exceptions, part of Area 1 (see Figure 13) may be a reflection of the more variable lithologies of the Lower Palaeozoic and the observed mineralisation associated with the Dent Fault. The anomalies in the remainder of Area 1 and Areas 2 and 3 probably represent the southern margin of the extensive mineralisation of the upper part of Swaledale. The grouping of anomalous values in Area 4 located in a largely Carboniferous environment is not explained from data indicated on any published geological map. However, in this area it is probable that the higher metal values are related to the observed minor mineralisation 8
and the presence of Silurian sediments in the lower part of the drainage basin. Soil data obtained from Tow Scar indicates that part of the North Craven Fault system in this area may have acted as a passageway for mineralising fluids, the metals finding a suitable host in the Great Scar Limestone. It is of interest to note the relationship of the best developed mineralisation at Tow Scar with the limited occurrence of cherty nodules in the outcrop of the Great Scar Limestone. The significance of the results from Tow Scar is twofold. Firstly the mineralisation was located as a result of a botanical observation and secondly it indicates a possibility of mineralisation adjacent to the North Craven Fault system to the east in areas of similar geological conditions. The area surveyed cannot be recommended for further mineral exploration with any prospect of discovering economic deposits. ACKNOWLEDGEMENTS The authors thank Mr. M. McGlashan and Mr. G. Hewson, who collected most of the drainage and soil samples. The figures have been drawn by the Drawing Office, IGS Keyworth; the text prepared and formatted by Ms L. K. Waterhouse, Editorial and Publication Unit, IGS Keyworth. REFERENCES BATESON, J. H., EVANS, A. D. and JOHNSON, C. C. 1983. Mineral Reconnaissance in the Northumberland trough. Mineral Reconnaissance Program me Rep. Inst. GeoL Sci., No. 62. DAKYNS, J. R., TIDDEMAN, R. H., GUNN, W., and
STRAHAN, A. 1890. The geology of the country around Ingleborough with parts of Wensleydale and Wharfedale. Mem. Geol. Surv. Eng. dcWales. Old Series 97 SW. 103 pp. + vi. DAKYNS, J. R., TIDDEMAN, R. H., RUSSELL, R., CLOUGH, C. T. and STRAHAN, A. 1891. The geology of the country around Mallerstang, with parts of Wensleydale, Swaledale and Arkendale. Mem. GeoL Surv. Eng. & Wales. Old Series 97 NW. 213 pp. + vi. DUNHAM, K. C. and STUBBLEFIELD, C. J., 1944. The stratigraphy, structure and mineralisation of the Greenhow mining area, Yorkshire. Q.J. GeoL See. London. Vol. 100, pp. 209-268. INESON, P. R. and AL-BADRI, A. S. 1980. Hydrogeochemically anomalous areas in the Askrigg Block of the Northern Pennine Orefield. Proc. Yorks. Geol. Sot., Vol. 43 (l), pp. 17-27 1981. A hydrogeochemical and stream sediment survey of the Askrigg Block in the Northern Pennine orefield. Proc. Yorks. Geol. Sot., Vol. 43 (4), pp. 357-376. INSTITUTE OF GEOLOGICAL SCIENCES 1972. Aeromagnetic Map of Great Britian. Sheet 2. England & Wales. 1:625 000 Series. - 1977. Bouguer Gravity Anomaly Map (Provisonal Edition). Lake District Sheet 54’N-04’W. 1:250 000 Series. LEVINSON, A. A. 1974. Introduction to Exploration Geochemistry. Applied Publishing Ltd., Calgary. pp.612. PLANT, J. 1971. Orientation studies on stream sediment sampling for a regional geochemical survey in northern Scotland. Rans. Inst. Min. Metall. (Sect. B: Appl. earth sci.), Vol. 80, pp. 324-346. SMALL, A. T. 1978. Zonation of Pb-Zn-Cu-F-Ba mineralisation in part of the North Yorkshire Pennines. Trans. Inst. Min. Metall. (Sect. B: AppL earth sci.), Vol. 87, pp. 10-13.
I APPENDIX
1
Locationandanalyticaldata fordrainagebasinreconnaissance. Table 1
Stream
Table
locatlonal
for
water
Sample number
I 1 I I I I I I I I I I I I
of
sediment and
and water analytical
samples.
data
for
stream
s pg/ml.Absen It data are indicated Grid reference
37756 37734 37720 37735 37820 37843 37852 37775 37777 37828 37762 37603 37673 37680 37740 37726 37766 37734 37953 37977 37970 37915 37900 37890 37848 37787 37803 37822 37859 38570 37899 38621 38590 38529 38517 36980 38000 38010 37994 38086 38109 38203 37581 37658 37661 37741 38470 38369 38375 38434 38464 38520 37272 37238 37297 37349 37689 37718 37766 37810 37484
49652 49688 49750 49820 49830 49947 49983 49978 49785 49220 49703 49412 49386 49392 49347 49307 49245 49230 49417 49350 49230 49465 49490 49568 49600 49584 49547 49498 49452 49089 49178 49277 49279 49320 49416 49332 49348 49322 49290 49272 49282 49237 48766 48853 48866 48881 49067 49013 48930 48976 48996 49028 49027 49005 48980 48957 48967 49009 49044 49089 48950
3066 3067
37555 37531
3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090
37572 37622 37714 37375 37409 37459 37443 37146 37165 37089 37026 38258 38287 37790 37212 37242 37184 36713 36697 36880 36867 38094 38090
and
waters.
Sediments
cu 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065
sediments
Pb ---
Sr
Mn
45 45 50 50 60 45 45 60 45 55 50 55 40
150 1YO 150 320 230 250 140 240 98 180 210 150 140
110 98 58 68 68 66 56 96 62 118 72 84 64
16 18 14 12 16 16 18 16 22 22 26 18 18 24 26 12 12 16 18 16 18 18 16
12 12 16 18 20 14 12 14 14 18 8
35 40 40 30 55 35 30 35 35 55 50 40 45 60 45 30 30 35 165 40 40 50 60 40 35 40 35 40 40 35 35 30 40 45 55 70 70 45 60 40 45 45 35 40 35 55 35 20
170. 230 200 170 72 120 106 68 120 210 230 190 180 160 76 32 90 108 350 180 220 210 250 140 120 102 150 160 170 90 50 72 150 150 250 520 120 170 230 210 300 140 210 70 86 250 130 52
56 74 56 38 52 50 66 50 82 72 76 46 104 120 130 54 26 66 86 46 58 44 52 66 36 62 54 66 48 54 40 62 80 28 72 54 24 62 38 46 50 38 36 36 38 40 62 14
48951 49003
14 14
80 45
220 410
38 36
750 1600 1250 3000 2500 2050 1200 1550 750 2800 1050 1800 1400 1250 2400 1450 900 750 650 530 800 600 1700 1700 1600 650 750 360 60 460 850 1350 1200 1550 1350 1600 700 700 650 1300 650 1050 530 310 370 1050 2150 1900 2100 1600 1050 2150 1300 2250 750 1450 420 400 1350 1100 370 1750 2200
49005 49030 49OYl 48981 48929 48930 48972 49051 49110 49099 49127 48480 48568 49128 49020 49053 49094 49152 49097 49048 49110 48657 48693
16 16 16 10 14 10 20 20 16 16 14 20 16 12 16
50 45 80 30 40 35 50 40 40 45 65 80 50 40 35 50 30 30 30 75 65 45 40
220 90 110 72 260 150 160 92 160 240 170 310 190 54 94 98 94 90 170 220 550 330 170
54 44 60 22 42 30 54 62 56 40 42 120 82 36 38 34 26 16 14 12 50 50 38
1050 470 1050 460 750 950 800 600 900 3000 1400 1450 950 300 340 650 700 950 2450 6500 11000 1800 800
14 12 10 12 14 18 14 16
sediments
Sample number
Waters Zn
28 30 20 22 30 20 22 24 30 24 22 16 12
18 14 16 16 18 14 14 10 14 14 12 16 20
For
the concentrations
are in ppm;
by -1.00.
Ba --
280 Y20 240 700 560 540 440 1200 200 560 400 380 320 280 400 360 280 220 280 200 220 260 320 540 280 220 280 240 80 180 240 1200 440 580 360 420 220 160 200 220 240 200 260 140 240 320 240 760 480 240 800 340 680 260 220 240 140 180 200 520 100 240 260 220 220 280 140 220 180 420 300 320 360 280 420 400 180 200 240 160 200 260 500 960 460 600
Co
40 44 36 48 42 32 30 32 24 36 34 40 28 28 40 34 26 28 22 22 20 26 34 36 32 28 30 28 12 16 24 28 28 36 34 28 22 22 24 24 22 22 20 18 20 22 24 28 54 36 22 26 30 34 30 28 18 20 30 26 12 38 42 32 24 34 16 26 20 30 26 26 28 34 30 26 18 20 18 16 16 22 74 74 32 24
Grid reference
Sediments
3091 3OY2 3UY3 3094 3OY6 3OY7 3098 JOY9
38290
48644
38299 38315 38342 37774 37770 37788 37787
48645 48684 48769 48584 48490 48466 48431
31uo 3101 3102 3103 3104 3105 3106 3107
37768 38099
48391 48709
38164 38171 38209 38230 38328 37710
48742 48806 48815 48794 48883 48771
3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131
37683 37650 37593 37748 37730 37626 37702 38259 38194 38163 38142 38096
48643 48684 48679 48412 48500 48510 48559 49171 49143 49121 49097 49064
38071 37479 37427 37347 38330 38319 38240 38274 38269
49107 48695 48682 48647 49426 49521 49510 49434 49429
3132 3133 3134 3136 3137 3138 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165
38303 38370 38042 37272 37251 37258 37355 37442 37484 38634 37136 37200 37200 37203 37128 37150 37110 36981 37050 36930 38642 38620 38658 36953 36977 36915 36851 36852 37073 36608 36700 36743 36787 36830
49391 49292 48989 48285 48380 48463 48578 48580 48582 49562 48302 48366 48392 48500 48508 48593 48623 49313 49218 49185 49470 49370 49213 49420 49420 49383 49279 49270 49598 49270 49330 49310 49318 49397
3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180
36800 36740 36661 36816 36833 37057 37110 36941 36977 36931 36913 36989 37034 37169 37041
49454 48958 48922 48830 48822 49569 49515 49488 49568 49578 49551 48602 48668 48728 48773
-0.02 0.02 0.02 0.02 0.03 0.03 0.02 0.08 0.06 -1.00 0.05 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.03 0.04 0.03 0.03 0.04 0.03 0.02 0.03 0.03 0.02 0.02 0.02 0.10 0.03 0.03 0.02 0.03 -1.00 0.02 0.53 0.04 0.06 0.04 0.03 0.03 0.03 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.04 0.03 0.03 0.03 0.02 0.02 0.03 0.02 0.03 0.02 0.02 0.01 0.02 0.02 0.02 0.01 0.02 0.03 0.03 0.03 0.03 0.02 0.02 0.00 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.01 0.01
10
Waters
-Cu ---20 18 20 20 18 26 18 18 22 20
Pb
Zn
Sr
Mn
Ba
55 60 45 60 45 55 55 60 50 50
180 170 130 140 150 130 190 340 200 210
56 102 76 80 54 52 58 66 56 50
600 1400 750 800 650 1000 1450 2500 950 1050
340 520 440 480 420 340 340 340 360 620
16 24 24 22 18 18
50 95 50 50 50 50
180 340 130 200 240 120
34 58 70 60 86 68
22 18 22 18 16 26 24 22 16 20 16 18 12
50 45 50 55 85 65 65 45
190 150 200 150 240 170 260 150
76 46 60 50 70 64 78 76
45 45 35 50 45 45 45 50 55
130 180 180 210 120 150 130 150 300
52 74 60 72 56 60 52 46 66
850 1350 540 -650 1600 650 900 1250 1000 900 1900 700 1100 750 700 850 850 1100 950
300 680 940 980 560 360 440 300 300 280 480 380 460 540 440 640 500 500 320 400 360 500 640
55 70 55 45 60 50 45 45 65 60 55 40 45 65 40 30 35 35 30 35 40 35
300 250 240 240 220 200 180 380 260 220 270 140 270 120 260 180 190 200 210 220 110 380
66 64 52 56 54 52 48 52 50 48 54 42 42 52 56 54 50 54 42 58 64 68
40 35 75 450 90 50 45 40 50 40 70 35 55 45 40 45 55 35 60 30 20 45 40 70 45 45 45 35 40 25 35
350 270 360 650 350 120 220 220 320 120 600 88 170 140 110 120 120 100 380 92 50 350 70 180 150 140 94 260 130 92 130
42 54 62 108 70 310 90 94 58 20 68 14 14 14 18 12 12 12 26 12 14 102 62 140 68 16 14 66 58 30 46
24 22 26 24 24 24 20 16 20 16 10 18 24 20 14 10 14 16 16 14 12 20 12 18 18 12 10 12 14 14 18 22 18 20 24 10 20 24 26 18 18 24 24 lo 14 8 6 22 14 28 30 20 18 14 20 14 10
900 600 600 1100
2200 580 2200 540 2000 400 1850 400 460 900 1300 560 750 280 2200 380 380 1350 460 1350 1350 320 2000 360 1600 260 1450 620 1300 360 1150 280 1350 300 1300 320 320 1850 1200 340 900 400 6500 720 2700 280 3600 680 2400 840 2800 1950 900 1600 2350 540 960 1300 1500 720 3000 720 950 380 880 1800 0 360 750 950 220 380 750 400 1450 850 340 750 300 500 240 2850 260 340 160 440 120 2250 2320 800 300 2550 400 600 2050 340 950 410 260 1900 380 800 380 750 240 240 600
Co -26 28 30 32 26 26 28 40 34 28
F 0.02 0.04 0.02 0.03 0.02 0.02 0.02 0.02 0.02 0.00
28 40 30 32 36 28 32 28 32 32 40 36 38 30 24 28 20 26 18 32 28 36 38 40 44 38 28 36 28 18 40 32 28 28 18 28 28 26 22 26 26 26 24 22 52 36 32 38 24 28 28 26 26 32 14 29 20 24 20 24 24
0.00 0.04 0.05 0.04 0.05 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.04 0.04 0.04 0.02 0.02 0.02
24 14 22 10 8 34 20 30 26 24 18 26 22 12 22
0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.03 0.02 0.03 0.04 0.06
0.03 0.04 0.03 0.05 0.04 0.06 0.05 0.03 0.03 0.04 0.03 0.02 0.02 0.03 0.02 0.02 0.02 0.02 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.04 0.03 0.03 0.03 0.09 0.15 0.04 0.03 0.03 0.04 0.02 0.02 0.02 0.02 0.01 0.01 0.01
Sample number
Grid reference
Sediments Cu
I
I
I I .I
Pb
Waters Zn
Sr
Mn
Ba
Co
F
3182 3184 3181
36959 37524 36867
48028 48869 48913
14 10 12
45 35 50
400 310 150
46 90 36
6000 2500 800
400 300 540
40 50 16
0.03 0.04 0.02
3185 3186 3187 3188 3189 3190 3191 3192
37569 48080 37581 48125 37599 48140 37592 48195 37627 48230 37733 47650 37004 48807 37462 47983
10 10 12 14 10 8 4 10
35 25 35 45 50 50 20 80
140 44 120 200 200 130 80 210
34 44 44 54 34 60 16 36
1350 3500 650 850 2800 950 600 1950
260 240 240 260 280 320 140 340
18 12 20 22 26 20 12 22
0.02 0.02 0.02 0.02 0.02 0.02 0.05 0.03
3195 3193 3194
37345 37481 37372 47878 47914 47921
16 10
40 70
120 170 72
66 56 26
1500 1000 600
320 340 180
22 24 16
0.03 0.04
3196 3197 3199 3200 3201 3202 3203 3204 3206 3207 3208
37330 37452 3’7880 37910 37658 37653 37673 37730 36904 36913 36937 36904
47828 47850 47630 47639 47564 47559 47441 47539 48473 48560 48660 48660
22 18 4 4 10 12 16 10 14 14 14 14
45 40 20 15 35 25 35 50 35 105 40 60
190 220 82 66 38 110 130 150 66 180 260 500
76 34 14 12 34 34 38 46 76 60 40 66
1000 1400 240 330 90 700 370 350 490 3900 1900 4600
500 540 140 160 180 260 300 380 280 360 540 280
24 20 8 8 12 18 20 18 20 48 30 44
0.03 0.03 0.03 0.03 0.03 0.02 0.02 0.04 0.02 0.02 0.02 0.02
3213 3211 3210
37952 37926 48651 36852 47533 47618
12 16 8
30 35
170 110 120
36 48
1400 750 950
260 200 100
14 24 12
0.02
3215
36622 36708
48366 48391
24 12
55 50
250 420
42 44
1950 3000
440 340
26 24
0.01 0.02
3219 3218 3217 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247
36730 36799 36713 36690 36769 36723 37395 37299 37217 36929 37000 37074 37137 38085 37418 37342 37345 37325 37313 37251 37230 38030 37943 37908 38090 37993 37960 37932 38048 37513 37542 37083 37002 37070 37910 37880
48380 48420 48463 48492 48599 48540 49931 49914 49898 49682 49730 49790 49776 48609 49508 49597 49606 49653 49695 49691 49723 48198 48164 48143 48598 48297 48228 48214 48523 47677 47720 47492 47384 47258 48102 48093
16 20 16 12 20 14 10 16 26 32 30 20 12 32 16 12 16 18 16 10 14 14 16 lo 14 12 6 12
50 80 65 45 40 50 35 55 65 55 60 50 45 30 40 40 35 40 40 40 45 35 35 40 30 35 40 30 40 25 40 20 35 30 45 35
320 420 260 200 150 320 72 120 120 180 210 150 270 150 150 240 150 180 150 210 190 160 200 190 100 180 160 190 180 180 280 76 120 74 160 180
74 50 56 36 48 58 48 58 90 16 46 30 a4 88 50 58 64 64 84 100 24 70 64 44 110 72 62 28 80 20 96
4500 5200 1500 1950 1250 2700 400 650 850 1150 1650 1300 1550 600 700 1150 950 2250 600 1050 1350 570 1050 850 1000 850 1250 1600 1300 1750 1450 370 700 900 1450 700
440 400 280 300 340 440 1360 1360 1360 300 440 340 340 240 280 340 280 640 540 460 260 240 180 180 220 220 200 140 220 140 340 a0 140 140 140 160
28 50 54 24 18 38 18 20 20 26 30 26 32 18 22 32 22 30 24 28 22 20 20 24 14 20 22 16 20 26 36
0.02 0.02 0.01 0.02 0.00 0.02 0.05 0.01 0.01 0.01 0.01 0.02 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.01 0.01 0.02 0.02 0.01 0.02 0.02 0.02 0.01 0.02 0.02 0.02 0.02 0.06 0.06
3249 3250 3251 3252
260 a 10 lo 8 22
22 48 50 70
14 16 20 26
Sample number
3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3311 3312 3313 3314 3315 3316 3317 3318 3319 3322 3323
Grid reference
37875 37840 37477 37401 37259 37226 37158 37264 37027 36672 36691 36751 36640 36600 36519 36395 36400 36441 36920 36844 36763 36582 36488 36358 36272 36200 36340 36305 36345 36330 36320 37750 37822 37905 37830 36454 36374 36339 36340 37850 37972 37928 37877 37172 37156 37110 37125 37200 37090 37036 36988 36963 36917 37108 36337 37751 37125 37120 36758 36646 36689 36768 36730 36706 36853 37509 37649
48025 48035 47640 47570 47597 47593 47535 47366 47190 48185 48250 48317 48273 48229 48252 49028 48877 48772 48198 48128 48063 47998 47955 48128 48124 48359 48371 48445 48758 48682 48619 47920 47885 47923 47941 47882 47802 47715 48540 47836 47826 47732 47750 48084 48093 48018 47997 47990 47974 47917 47850 47807 47790 47896 47832 47075 47982 47960 47637 47597 47562 47510 47427 47429 47378 47275 47323
Sediments
--
Cu ----
Pb
Zn
Sr
Mn --
12 18 10 16 10 12 18 lo 14 20 16 14 14 20 12 a 14 18 12 12 12 14 50 20 14 18 20 10 16 14 12 6 4 4 6 14 12 14 60 6 10 10 6 14 12 16 26 10 12 16 a 16 16 8 14 12 16 16 6 10 4 14 10 16 6 12 14
45 40 30 45 35 35 105 45 25 95 80 50 60 60 40 20 40 45 45 50 60 35 50 40 55 40 40 25 40 40 35 15 20 30 15 40 25 25 135 25 35 35 15 50 35 45 45 40 40 40 25 30 55 50 40 45 75 80 20 30 5 30 30 50 15 35 40
140 150 150 300 52 52 130 70 40 590 600 450 370 530 150 72 300 260 90 220 230 150 390 140 120 130 190 84 180 180 88 80 92 160 34 250 120 76 280 200 280 240 120 360 48 170 260 52 230 280 98 260 340 320 94 200 190 290 70 160 24 60 46 70 40 210 160
48 64 110 68 110 56 28 28 44 50 42 58 56 $0 14 8 14 12 50 44 38 30 42 12 10 14 10 10 12 12 10 16 28 40 30 14 10 10 14 56 40 150 24 44 36 50 40 34 50 54 32 54 50 30 14 32 70 28 42 46 26 50 64 46 32 84 84
1350 1400 950 1000 160 340 1150 380 480 9000 5200 11500 3000 8000 1350 300 1900 2000 280 800 1100 1500 17000 1000 750 1200 1150 420 1050 1050 1000 1000 1100 4500 110 5100 1450 750 1200 2250 1850 1550 900 1350 320 900 3000 320 1700 1800 420 1700 1350 2250 600 750 750 1000 420 2450 120 570 550 1850 210 1200 650
Ba 180 180 240 200 160 100 180 120 140 320 300 540 340 500 200 100 160 200 200 200 140 360 840 180 160 160 220 180 140 160 160 100 200 240 a0 300 160 180 200 340 760 660 140 220 140 280 260 180 360 360 200 280 240 320 220 240 420 440 120 240 60 240 340 180 140 240 220
Waters
Co --
F
24 28 22 28 12 14 16 14 12 80 44 52 34 46 16 12 20 22 14 22 24 16 54 16 16 18 22 18 16 la 18 10 10 18 6 26 16 18 26 20 20 18 14 24 16 26 20 14 24 30 14 26 32 24 la 20 26 28 10 20 a 18 16 20 a 22 26
0.04 0.04 0.03 0.02 0.02 0.03 0.02 0.02 0.03 0.03 0.03 -1.00 0.03 0.02 -1.00 0.02 -1.00 -1.00 -1.00 0.02 -1.00 0.02 -1.00 0.02 0.02 0.02 0.01 -1.00 0.01 -1.00 -1.00 0.02 0.02 -1.00 0.02 -1.00 -1.00 0.02 0.01 0.02 0.02 -1.00 -1.00 -1.00 -1.00 0.02 0.02 -1.00 -1.00 0.02 -1.00 -1.00 0.02 0.02 -1.00 0.01 -1.00 0.02 -1.00 0.02 0.02 -1.00 0.02 -1.00 0.03 0.02 0.02
Table 2
Panned concentrates
Table of panned concentrate data for barium, lead, zinc, copper, manganese and tin. With the exception of sample numbers 3330 and 3331, for locational data refer to Table 1. Concentrations in ppm. Absent data are shown as 0 and results below the detection limit are given as 1. Sample number 3004 3008 3009 3010 3011 3015 3022 3030 3031 3037 3039 3040 3043 3046 3047 3050 3055 3057 3061 3062 3063 3064 3067 3069 3073 3074 3075 3076 3077 3079 3082 3083 3084 3088 3089 3092 3096 3098 3105 3106 3107 3109 3117 3120 3121 3124 3129 3130 3131 3133 3136 3138 3142 3144 3146 3148 3150 3152 3153 3157 3158 3159 3161 3162 3164 3165
Ba
Pb
11000 33 120300 71 330 586 4239 450 119 4057 1464 72 749 170 388 35 2092 49 2074 22 2038 58 340 8762 192 90 133 429 1938 45 13700 142 3569 13 42600 16 236 23 294 36 367 28 4686 31 600 9 1850 27 95 9 5839 29 555 29 367 952 266 187 1168 138 288 27 901 729 225 517 2095 49 1386 16 836 148 618 25 208 9 27900 44 2148 45 242 39 2376 48 2678 23 717 21 2676 237 8005 54 2489 48 5352 60 235 8 11500 1129 691 20 425 25 189 6303 4462 132 2521 329 1862 38 9668 88 108700 19442 24400 2173 15800 231 13700 321 1860 222 1298 95 989 40 334 95 1411 48
Zn
Cu
Mn
152 120 75 50 272 163 ‘157 51 109 87 230 306 36 211 93 148 70 89 104 235 125 139 120 271 57 106 69 93 58 239 57 104 72 203 153 150 93 74 144 126 61 137 81 73 107 215 191 195 56 154 131 170 229 688 450 256 162 915 656 576 227 93 130 161 117 166
33 74 91 686 52 59 34 8 7 32 14 99 34 57 48 31 5 20 81 52 259 15 2 7 204 34 15 6
910 380 370 320 1220 510 490 130 460 370 970 1910 190 220 940 440 150 400 140 390 240 460 440 180 310 860 1320 300 340 460 180 620 600 1460 260 360 310 320 730 870 300 1030 300 330 920 920 660 1100 140 730 930 570 1260 780 460 1220 1540 1210 1690 1930 7310 980 360 410 680 410
;;
8 153 14 28 6 11 29 7 26 30 13 26 17 12 42 23 127 40 2 225 11 7 188 91 41 10 36 140 75 208 64 33 94 56 35 62
Sample number
Sn 3 10 238 333 17 180 45 64 1 1 2 3 2 12 1 2 1 1 1 5 4 4 6 4 1 26 21 9 68 1 10 1213 97 25 4 183 5 1 2 14 3 7 1 2 13 1 1 41 1 22 1 2 3 2 192 2 1 4 8 71 287 88 4 4 11 4
3168 3170 3171 3173 3174 3175 3178 3179 3180 3181 3182 3184 3185 3186 3187 3188 3189 3190 3192 3193 3194 3195 3196 3197 3199 3200 3204 3207 3211 3213 3215 3216 3219 3222 3225 3226 3227 3228 3229 3230 3232 3235 3239 3240 3241 3243 3244 3247 3249 3250 3251 3253 3254 3255 3256 3257 3258 3260 3263 3266 3272 3274 3281 3284 3285
12
Ba -----316 118 43600 259 2482 490 6502 580 562 1703 705 1797 552 645 762 681 364 2818 6113 104 184 2111 301 2714 49 490 110 105 121 173 7472 1543 478 603 21200 532 6881 1781 3515 3269 1217 38400 444 386 2065 326 802 12501 196 33 156 129 148 4243 257 133 28 808 395 1482 498 1134 605 197 2628
Pb 33 86 103 59 99 28 231 32 258 267 56 90 58 53 18 11 27 534 65 143 18 30 98 28 61 23 10 14 47 9 389 27 42 31 237 35 261 172 25 74 22 34 20 46 165 25 66 89 43 122 15 13 29 225 281 22 46 22 41 488 28 36 91 35 23
Zn 196 62 2823 156 363 142 163 58 50 154 133 209 206 232 121 297 172 230 343 42 91 100 102 84 42 61 26 34 169 40 1896 178 222 281 151 152 380 203 203 297 99 237 144 163 160 126 142 163 77 86 42 88 67 118 124 38 19 50 614 671 126 82 271 100 80
Cu 16 17 221 44 90 23 55 255 10
Mn
540 240 2940 740 2520 420 1230 320 190 380 * 20 15 620 50 240 190 3: 400 12 290 5 180 15 320 37 200 370 109 9 390 7 200 17 490 22 240 28 360 4 100 3 250 2 50 5 200 11 650 4 190 58 1270 9 920 7 1600 25 1470 32 970 28 550 181 1530 123 1220 13 1460 150 J7 11 500 24 1880 6 540 10 440 30 560 11 1610 10 400 84 550 22 220 16 350 220 240 1: 9 600 42 300 9 240 6 80 3 60 6 110 19 1980 46 5560 5 350 13 740 72 610 440 29 5 230
Sn 44 16 1 9 14 1 21 8 48 262 1 7 1 1 5 1 1 1 4 3 9 3: 17 40 2 1 7 22 6 1 1 5 1 31 2 39 75 2; 1 1 2 50 7 1 1 1 23 3 : 2 1 10 6 6 7 1 2 1 1 8 46 1
Sample number 3290 3291 3292 3293 3298 3299 3302 3305 3306 3308 3312 3314 3315 3317 3319 3322 3223 3330* 3331* *
Ba Pb -----376 16 452 2369 1650 31 20800 39 5437 31 341 28 678 30 91 21 8257 66 86 15 18200 40 228 34 48 6 175 95 86 326 168 22 113 19 2483 24 101200 2076
Grid reference
Zn
Cu
Mn
Sn
85 293 235 173 158 161 243 157 163 . 65 102 103 16 40 77 79 62 104 188
13 156 8 41 30 11 22 8 26 18 296 10 1 34 21 7 10 422 71
250 780 450 520 480 870 810 490 830 120 310 1140 80 1510 160 170 230 370 1550
4 503 1 42 1 1 6 4 1 8 1 7 1 5 114 5 4 1 1
for sample 3330 is [38261 491771; for 3331 [37284 499291.
APPENDIX 2 List of high anomalous stream sediment samples Sample number
Ba
Pb
Zn
*
*
38620 49370
3036 3088 3262 3263 3291 t
* _ * * *
_ * * * _
38621 36867 36672 36691 36340
49277 49110 48185 48250 48540
3001 3002 3005 3009 t 3173 3174 3227 3228 3231 3275 3066 3070 3079 3103 3112 3153 3192 3207 3219 3259 3312 3053 3160 3209 3264 3266 3008 3105 3156 3171 3224 3225
_ _ _ _ _ _ _ _ _ * * * * * * * * * * * _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ * * * * * _ _ _ _
a
_
37756 37734 37820 37777 36941 36977 37000 37074 37418 36488 37555 37714 38258 38171 37730 38658 37462 36913 36730 37158 37120 38375 37073 36904 36751 36600 37775 38230 36977 37057 37299 37217
49652 49688 49830 49785 49488 49568 49730 49790 49508 47955 48951 49091 48480 48806 48500 49213 47983 48560 48463 47535 47960 48930 49598 48660 48317 48229 49978 48794 49420 49569 49914 49898
HBC 3152 HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC HBC
Cu
* * * * * * * * * * *
Grid reference
*
in the elemqt Ba >950 ppm
column indicates an anomalous level of that element present in the stream sediment sample: Pb >80 ppm Zn >450 ppm Cu >28 ppm
t
sample suspected of being contaminated examination of concentrate sample)
(deduced from high Sn found in panned concetrate
13
from the same site and
