Exploration for porphyry-style copper mineralisation near Llandeloy
Exploration for porphyry-style copper mineralisation near Llandeloy Exploration for porphyry-style copper mineralisation near Llandeloy
HOLWSTER, V.F. 1974. An appraisal of the nature and source of porphyry copper deposits, Minerals Sci. Engng., Vo1.7, pp.225-233. HUGHES, C. J. 1973. Spilites, keratophyres and the igneous spectrum. Geol Mag., Vo1.109, pp.513-527. IMPERIAL COLLEGE, 1978. The Wolfson geochemical atlas of England and Wales, Clarendon Press, Oxford. INSTITUTE OF GEOLOGICAL SCIENCES, 1980. 1:250 000 series, aeromagnetic anomaly map LuMfy sheet, 5lUN -6'~. London: Institute of Geoiqical Sciences . KESLER, S.E., JONES, L.E. and WALKER, R.L. 1975. Intrusive rocks associated with porphyry copper mineralisation in island arc areas, Eeon. Geol., V01.70, ~p.515-526. KOKELAAR, B.P. 1979. Tremsdoc to Llanvirn volcanism on the south east side of the Narlech Dome (Rhobell Fawr), N. Wales. In: Harris, A.L., Holland, CON. and Leake, B. E. (Eds.) The Caledonides of the British Isles -Reviewed. Geol. Soc. Lond. Spec. Pub. No.8, pp.591-596. KOKELAAR, B.P. and others, 1984. The Ordovician marginal basin in Wales. In: Kokelaar, B.P. and Howells, M.F. (Eds.) Marginal basin geology. Geol. Soc. Lond. Spec. Pub. No.16, pp.245-269. LOWELL, J.D. and GUILBERT, J.M. 1970. Lateral and vertical alteration - mineralisation zoning in porphyry copper deposits. Econ. Geol., Vol.65, pp.373-408. LEPELTIfSR, C. 1969. A simplified s&tbtica3 treatment of geochemical data by graphical representation. Econ, Oeol., Vo1.64, pp. 538-550, NUTT, M.J.C. and SMITH, E.G, 1981. Transcurrent faulting and the anomalous position of pre- Carboniferous Anglesey. Nature, Vo1.290, pp.492- 494. OLADE, M.A. 1977. Major element haloes in granitic Wall rocks of porphyry copper deposits. Guichon Creek batholith, British Columbia. Jl. Geochem. Explor., Vo1.7, pp.59-71. OLADE, M.A. and FLETCHER, W.K. 1976. Trace element geochemistry of the Highland Valley and Guichon Creek Batholith in relation to porphyry copper mineralisation. &on, Geol., Vol.71, pp.73 3- 748. 0 NDRICK, C. W. and GRIFFITHS, J.C. 1969. Frequency distribution of elements in Rensselaer greywacke, Troy, New York. Geol. Soc. Amer. Bull., VoL80, pp.509-518. PARKER, M.E. 1983. Statis tical treatment of susceptibility data. Unpublished report, Applied Geophysics Unit Inst. Geol. Sci. No. 147. PARSLOW, G.R. 1974. Determination of background and threshold in exploration geochemistry. J. Geochem. E:~lor., Vo1.3, pp.319-336. PATCHETT, P.J. and JOCELYN, J. 1979. U-Pb zircon ages for late Precambrian igneous rocks in South Wales. J1. -01. Soc. Lond., Vol.136, pp.13-19. PEARCE, J.A. and GALE, G.H. 1977. Identification of ore deposi tim environment from trace element geochemistry of associated igneous host rocks. In: Volcanic processes in are genesis. Geol. Soe. Lond. Spec. Publ., No.?, pp.14-24. PEARCE, J,A. and NORRY, M.J. 1979. Petrogenetic implications of Ti, Zr, Y and Nb variations in volcanic rocks. Contrib. Mineral. Petrol., Vo1.69, pp.33-47. PRICE, N.B. 1963. The geochemistry of the Menevian rocks of Wales. Unpublished Ph.D. thesis, University of Wales, 233 pp. READ, 0.1983. Rare earth element behaviour during sub-asrial weathering. Unpublished Ph.D. thesis, University of London, 355 pp. RICE, R. and SHARP, G. 1976. Copper mineralisation in the farest of Coed-y-brenin, Wales. Trans. Instn. Mining Metall, (Sect. B: Appl. Earth Sci.), Vo1.85, pp.1-13. RIVALENTI, G. and SIGHMOLFI, G.P. 1969. Geochemical study of greywackes as a possible starting material for para* m hiboli tes. Contrib. Mineral. Petrol., VoL23, pp.17 3-188. RUDEFORTH, C.C. and BRADLEY, R.I. 1972. Soils, land classification and land use in west and central Pembrokeshire. Spec. Surv. No.6, Soil Surv., Harpenden. RUSHTON, A.W.A. 1974. The Cambrian of Wales and England. In: Holland, C.H. Cambrian of the British Isles, Norden and Spitzburgen. J. Wiley, London, pp.43-121. SAUNDERS, A.D., TARNEY, J. and WEAVER, S.D. 1979. Transverse geochemical variations across the Antarctic Peninearla: implications for the genesis of calc-afkstline magmas. Earth Planet Sci. Lett., Vo1.46, pp.344-369. SILLITOE, R.H. 197 3. The tops and bottoms of porphyry copper deposits. Econ. Geol., Vol.68, pp.799-815. SINCLAIR, A,J. 1976. Applications of probability graphs in mineral exploration. Assoc. Explm. Geochemists Spec. Vo1.4. STEAD, J.T.G. and WILLIAMS, B.P. J. 1971. The Cambrian rocks of north Pembrokeshire. In: Base tt, D.A. and Basse tt, M.G. (Eds.) Geological excursions in South Wales and the Forest of Dean. Geol. Assoc. of South Wales, Cardiff, pp.180-198. TAYLOR, R.P. and FRYER, B.J. 1980. Multiple-stage hydrothermal alteration in porphyry copper systems in northern Turkey: the temporal interplay of potassic, propylitic and phyllic fluids. Canad. J1, Earth Sci., Vo1.17, pp.901-926. TELFORD, W. and others. 1976. Applied Geophysics. Cambridge University Press, Cambridge. THOMAS, H.H. and COX, A.H. 1924. The volcanic series of Trefgarn, Roch and Ambleston (Pembrokeshire). Quart. Jl. Geol. Soc. Lond., Vo1.80, pp.520-548. THORPE, R.S. 1970. The origin of Pre-Cambrian diorite- granite plutonic series from Pembrokeshire (Wales). Geol, Mag., Vo1.107, pp.491-499. THORPE, R.S. 1972. Possible subduction zone origin for two Precambrian calc-alkaline plutonic complexes from southern Britain. Geol. Soc. Amer. Bull., Vo1.83, pp.3663-3668.
TUREKIAN, K.K. and WEDEPOHL, K.H. 1961. Distribution of elements in some units of the earth's crust. Geol. Soc. Amer. Bull., Vo1.72, pp.175-192. WEBER, J.N. and MIDDLETON, G.V. 1961. Geochemistry of the turbidites of the Normanskill and Charny Formations. Geochem et Cosmochim Acta., Vo1.22, pp.206-243. WEDEPOHL, K.H. 1969. Handbook of geochemistry. Springeroverlag, Berlin. WILLIAMS, T.G. 1933. The Pre-Cambrian and Lower Palaeozoic rocks of the eastern end of the St Davids Pre-Cambrian area, Pembrokeshire. Quart. Jl. Geol. Soc. Lond., Vo1.90, pp. 32-75.
- Page 11 and 12: SUMMARY Geological, geochemical and
- Page 13 and 14: concluded that except for Zn the re
- Page 15 and 16: The only rock containing evidence o
- Page 17 and 18: Table 3 Analyses of miscellaneous r
- Page 19: - 28 St. Brides Bay -
- Page 22 and 23: Hercynian orogenies (M. 3. Arthur,
- Page 24 and 25: Figure 14 Location of soil anomalie
- Page 26 and 27: producing a very limited dispersion
- Page 28 and 29: -1 00- Contours of VLF horizontal i
- Page 30 and 31: area and periglacial and glacial de
- Page 32 and 33: the Brunel Beds or the Tetragraptus
- Page 34 and 35: contains sparse subhedral plagiocla
- Page 36 and 37: There is some variation in the alte
- Page 38 and 39: The cause of other isolated weak Cu
- Page 40 and 41: j Table 9 Summary of analyses of in
- Page 42 and 43: increase the Zr content. The divisi
- Page 44 and 45: variation between pu8M microdioritn
- Page 46 and 47: T/I~~/~~IPYS openjoi~~tcd limestone
- Page 48 and 49: Table 13 Summary statistics for sed
- Page 50 and 51: than average values quoted for sand
- Page 52 and 53: Introduction The main geophysical m
- Page 54 and 55: Figure 42 Contour map of apparent r
- Page 56 and 57: Figure 45 Contour map of tow magnet
- Page 58 and 59: Pigum? 47 Cumulative f reguency plo
- Page 60 and 61: it to this late propylitic alterati
- Page 64 and 65: APPENDIX 1 ABBREWATEI) BOREHOLB LOG
- Page 66 and 67: BOREHOLE 2 Registration Number STvI
- Page 68 and 69: BOREHOLE 3B Registration Number SM
- Page 70 and 71: BOREHOLE 5 Registration Number SM 8
- Page 72 and 73: BOREHOLE 6 Registration Number SM 8
- Page 74 and 75: BOREHOLE 8 Registration Number SM 8
- Page 76 and 77: SANDSTONE: as above CLAY GOUGE: SAN
- Page 78 and 79: --- APPARENT ESISTIVITY pa IN OHM M
- Page 80 and 81: APPARENT ESISTMTY H Bbs ys 06 q6 CH
- Page 82 and 83: z ~ l ~ ~ ~ l ~ l . ~ l ~ , ~ l l A
- Page 84 and 85: z ~ 1 ~ 1 ~ 1 ~ 1 ~ 1 APPARENT FEJS
- Page 86 and 87: z ~ l $ l l l l l ~ l l ~ l l l l ~
- Page 88 and 89: MAGNETIC FELD IN NAFTESLA Y /-*-.-.
- Page 90 and 91: !IN@ a 8 g e s s I! s F N : , S ? I
- Page 92 and 93: ~ N & E e 8 g B 8 8 7 a F N . S ~ 9
- Page 94 and 95: PHYSICAL PROPERTY MEASUREMENTS ON B
- Page 96 and 97: Borehole 8 (diameters of core 9-72
- Page 98 and 99: APPENDIX 5 COMPUTER MODELLING OF AE
- Page 101 and 102: RMS RESID - 6.53 FLU. PT ELEV ORS n
- Page 103 and 104: MRGNET I C: TIJTERF'HFTAT 1014 . .
- Page 105 and 106: ANU.YSB OF BOLPROLB CORE& TRACE ELE
- Page 107 and 108: . Sample BH , Depthv ,(m); -, - . ~
- Page 109: . , I , . . . . .. . , . , '," . ',
HOLWSTER, V.F. 1974. An appraisal of the nature and<br />
source of <strong>porphyry</strong> <strong>copper</strong> deposits, Minerals Sci.<br />
Engng., Vo1.7, pp.225-233.<br />
HUGHES, C. J. 1973. Spilites, keratophyres and the<br />
igneous spectrum. Geol Mag., Vo1.109, pp.513-527.<br />
IMPERIAL COLLEGE, 1978. The Wolfson geochemical<br />
atlas of England and Wales, Clarendon Press,<br />
Ox<strong>for</strong>d.<br />
INSTITUTE OF GEOLOGICAL SCIENCES, 1980.<br />
1:250 000 series, aeromagnetic anomaly map LuMfy<br />
sheet, 5lUN -6'~. London: Institute of Geoiqical<br />
Sciences .<br />
KESLER, S.E., JONES, L.E. and WALKER, R.L. 1975.<br />
Intrusive rocks associated with <strong>porphyry</strong> <strong>copper</strong><br />
<strong>mineralisation</strong> in island arc areas, Eeon. Geol.,<br />
V01.70, ~p.515-526.<br />
KOKELAAR, B.P. 1979. Tremsdoc to Llanvirn volcanism<br />
on the south east side of the Narlech Dome<br />
(Rhobell Fawr), N. Wales. In: Harris, A.L., Holland,<br />
CON. and Leake, B. E. (Eds.) The Caledonides of the<br />
British Isles -Reviewed. Geol. Soc. Lond. Spec.<br />
Pub. No.8, pp.591-596.<br />
KOKELAAR, B.P. and others, 1984. The Ordovician<br />
marginal basin in Wales. In: Kokelaar, B.P. and<br />
Howells, M.F. (Eds.) Marginal basin geology. Geol.<br />
Soc. Lond. Spec. Pub. No.16, pp.245-269.<br />
LOWELL, J.D. and GUILBERT, J.M. 1970. Lateral and<br />
vertical alteration - <strong>mineralisation</strong> zoning in<br />
<strong>porphyry</strong> <strong>copper</strong> deposits. Econ. Geol., Vol.65,<br />
pp.373-408.<br />
LEPELTIfSR, C. 1969. A simplified s&tbtica3 treatment<br />
of geochemical data by graphical representation.<br />
Econ, Oeol., Vo1.64, pp. 538-550,<br />
NUTT, M.J.C. and SMITH, E.G, 1981. Transcurrent<br />
faulting and the anomalous position of pre-<br />
Carboniferous Anglesey. Nature, Vo1.290, pp.492-<br />
494.<br />
OLADE, M.A. 1977. Major element haloes in granitic<br />
Wall rocks of <strong>porphyry</strong> <strong>copper</strong> deposits. Guichon<br />
Creek batholith, British Columbia. Jl. Geochem.<br />
Explor., Vo1.7, pp.59-71.<br />
OLADE, M.A. and FLETCHER, W.K. 1976. Trace<br />
element geochemistry of the Highland Valley and<br />
Guichon Creek Batholith in relation to <strong>porphyry</strong><br />
<strong>copper</strong> <strong>mineralisation</strong>. &on, Geol., Vol.71, pp.73 3-<br />
748.<br />
0 NDRICK, C. W. and GRIFFITHS, J.C. 1969. Frequency<br />
distribution of elements in Rensselaer greywacke,<br />
Troy, New York. Geol. Soc. Amer. Bull., VoL80,<br />
pp.509-518.<br />
PARKER, M.E. 1983. Statis tical treatment of<br />
susceptibility data. Unpublished report, Applied<br />
Geophysics Unit Inst. Geol. Sci. No. 147.<br />
PARSLOW, G.R. 1974. Determination of background and<br />
threshold in exploration geochemistry. J. Geochem.<br />
E:~lor., Vo1.3, pp.319-336.<br />
PATCHETT, P.J. and JOCELYN, J. 1979. U-Pb zircon<br />
ages <strong>for</strong> late Precambrian igneous rocks in South<br />
Wales. J1. -01. Soc. Lond., Vol.136, pp.13-19.<br />
PEARCE, J.A. and GALE, G.H. 1977. Identification of<br />
ore deposi tim environment from trace element<br />
geochemistry of associated igneous host rocks. In:<br />
Volcanic processes in are genesis. Geol. Soe. Lond.<br />
Spec. Publ., No.?, pp.14-24.<br />
PEARCE, J,A. and NORRY, M.J. 1979. Petrogenetic<br />
implications of Ti, Zr, Y and Nb variations in<br />
volcanic rocks. Contrib. Mineral. Petrol., Vo1.69,<br />
pp.33-47.<br />
PRICE, N.B. 1963. The geochemistry of the Menevian<br />
rocks of Wales. Unpublished Ph.D. thesis,<br />
University of Wales, 233 pp.<br />
READ, 0.1983. Rare earth element behaviour during<br />
sub-asrial weathering. Unpublished Ph.D. thesis,<br />
University of London, 355 pp.<br />
RICE, R. and SHARP, G. 1976. Copper <strong>mineralisation</strong> in<br />
the farest of Coed-y-brenin, Wales. Trans. Instn.<br />
Mining Metall, (Sect. B: Appl. Earth Sci.), Vo1.85,<br />
pp.1-13.<br />
RIVALENTI, G. and SIGHMOLFI, G.P. 1969.<br />
Geochemical study of greywackes as a possible<br />
starting material <strong>for</strong> para* m hiboli tes. Contrib.<br />
Mineral. Petrol., VoL23, pp.17 3-188.<br />
RUDEFORTH, C.C. and BRADLEY, R.I. 1972. Soils, land<br />
classification and land use in west and central<br />
Pembrokeshire. Spec. Surv. No.6, Soil Surv.,<br />
Harpenden.<br />
RUSHTON, A.W.A. 1974. The Cambrian of Wales and<br />
England. In: Holland, C.H. Cambrian of the British<br />
Isles, Norden and Spitzburgen. J. Wiley, London,<br />
pp.43-121.<br />
SAUNDERS, A.D., TARNEY, J. and WEAVER, S.D. 1979.<br />
Transverse geochemical variations across the<br />
Antarctic Peni<strong>near</strong>la: implications <strong>for</strong> the genesis of<br />
calc-afkstline magmas. Earth Planet Sci. Lett.,<br />
Vo1.46, pp.344-369.<br />
SILLITOE, R.H. 197 3. The tops and bottoms of <strong>porphyry</strong><br />
<strong>copper</strong> deposits. Econ. Geol., Vol.68, pp.799-815.<br />
SINCLAIR, A,J. 1976. Applications of probability graphs<br />
in mineral exploration. Assoc. Explm. Geochemists<br />
Spec. Vo1.4.<br />
STEAD, J.T.G. and WILLIAMS, B.P. J. 1971. The<br />
Cambrian rocks of north Pembrokeshire. In:<br />
Base tt, D.A. and Basse tt, M.G. (Eds.) Geological<br />
excursions in South Wales and the Forest of Dean.<br />
Geol. Assoc. of South Wales, Cardiff, pp.180-198.<br />
TAYLOR, R.P. and FRYER, B.J. 1980. Multiple-stage<br />
hydrothermal alteration in <strong>porphyry</strong> <strong>copper</strong><br />
systems in northern Turkey: the temporal interplay<br />
of potassic, propylitic and phyllic fluids. Canad. J1,<br />
Earth Sci., Vo1.17, pp.901-926.<br />
TELFORD, W. and others. 1976. Applied Geophysics.<br />
Cambridge University Press, Cambridge.<br />
THOMAS, H.H. and COX, A.H. 1924. The volcanic series<br />
of Trefgarn, Roch and Ambleston (Pembrokeshire).<br />
Quart. Jl. Geol. Soc. Lond., Vo1.80, pp.520-548.<br />
THORPE, R.S. 1970. The origin of Pre-Cambrian diorite-<br />
granite plutonic series from Pembrokeshire<br />
(Wales). Geol, Mag., Vo1.107, pp.491-499.<br />
THORPE, R.S. 1972. Possible subduction zone origin <strong>for</strong><br />
two Precambrian calc-alkaline plutonic complexes<br />
from southern Britain. Geol. Soc. Amer. Bull.,<br />
Vo1.83, pp.3663-3668.