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The palaeoenvironment of East Kirkton, West Lothian, Scotland: stable isotope evidence from silicates and sulphides

Published online by Cambridge University Press:  03 November 2011

R. A. R. McGill ,
A. J. Hall ,
A. E. Fallick  and
A. J. Boyce
R. A. R. McGill
Affiliation:
Department of Geology and Applied Geology, University of Glasgow, Glasgow G12 8QQ
A. J. Hall
Affiliation:
Department of Geology and Applied Geology, University of Glasgow, Glasgow G12 8QQ
A. E. Fallick
Affiliation:
Isotope Geosciences Unit, SURRC, East Kilbride, Glasgow G75 0QU, U.K.
A. J. Boyce
Affiliation:
Isotope Geosciences Unit, SURRC, East Kilbride, Glasgow G75 0QU, U.K.
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Abstract

Stable isotope data from the East Kirkton succession are used to elucidate the extent of hot-spring influence in the palaeoenvironment by constraining conditions of deposition of the silica and the formation of sulphides.

Petrographically silica occurs as chert laminae thought to be primary, and as patchy chert considered as replacive. No evidence for biogenic silica was observed. For 20 silica samples δ18O was measured for structural oxygen and δD for bound water. δ18O(SMOW) varied between +21 and +27‰ with no sample groupings related to petrography. The range in δD(SMOW) was from −50 to −90‰ with lower values characterising replacive or altered silica; water contents of both petrographic groups were similar. A plot of δ18O versus δD for the laminated primary silica defines a grouping about the line defined by Scottish agates (Fallick et al. 1985). This suggests for the unaltered silica a formation temperature of about 60°C and a fluid containing a strong component of meteoric water. The data imply a Lower Carboniferous meteoric water δ18O composition of −3‰ and δD of −15‰, consistent with the known palaeolatitude.

The only sulphide observed was pyrite; 34 samples were selected from a wide variety of lithological and textural occurrences. δ34S(CDT) ranges widely and continuously between +8 and −34‰ with no strong mode. The sulphur appears to be derived from several sources, and pyrite formation from a variety of conditions as indicated by such wide ranging data, but for the samples with the lowest δ34S the involvement of bacteria in sulphate reduction is inferred.

Keywords

Primary silicaaltered/replacive silicameteoric waterwarm water (60°C)pyritewide ranging valuesbacteriogenic sulphate reductionpalaeoenvironmentEast KirktonScotland
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 84 , Issue 3-4: Volcanism and early terrestrial biotas , 1993 , pp. 223 - 237
Copyright
Copyright © Royal Society of Edinburgh 1993

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References

Anderton, R. 1985. Sedimentology of the Dinantian of Foulden, Berwickshire Scotland. TRANS R SOC EDINBURGH: EARTH SCI 76, 7–12.CrossRefGoogle Scholar
Briggs, D. E. G., Bottrell, S. H. & Raiswell, R. 1991. Pyritisation of soft-bodied fossils: Beecher's trilobite bed, Upper Ordovician, New York State. GEOLOGY 19, 1221–4.2.3.CO;2>CrossRefGoogle Scholar
Claypool, G. E., Holster, W. T., Kaplan, I. P., Sakai, H. & Zak, I. 1980. The age curves of sulphur and oxygen isotopes in marine sulphate and their mutual interpretation. CHEM GEOL 28, 199–260.CrossRefGoogle Scholar
Clayton, R. N. & Mayeda, T. K. 1963. The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis. GEOCHIM COSMOCHIM ACTA 27, 43–52.CrossRefGoogle Scholar
Clayton, R. N. & Steiner, A. 1974. Oxygen isotope studies of the geothermal system at Wairakei, New Zealand. GEOCHIM COSMOCHIM ACTA 39, 1187–92.Google Scholar
Fallick, A. E., Jocelyn, J., Donnelly, T., Guy, M. & Behan, C. 1985. Origin of agates in volcanic rocks from Scotland. NATURE 313, 672–4.CrossRefGoogle Scholar
Fallick, A. E., Jocelyn, J. & Hamilton, P. J. 1987. Oxygen and hydrogen stable isotope systematics in Brazilian agates. In Rodriguez-Clemente, R. & Tardy, Y. (eds) Geochemistry and mineral formation in the earth surface, 99–117. Madrid & ParisCNRS & CSIC.Google Scholar
Friedman, I. 1953. Deuterium content of natural waters and other substances. GEOCHIM COSMOCHIM ACTA 4, 89–103.CrossRefGoogle Scholar
Geikie, A. 1861. In Howell H. H. & Geikie A. The geology of the neighbourhood of Edinburgh. MEM GEOL SURV GR BRIT 1–151.Google Scholar
Grinenko, V. A. 1962. Preparation of sulfur dioxide for isotopic analyses. Z. NEORGAN. KHIMII. 7, 2478–83.Google Scholar
Hibbert, S. 1836. On the fresh-water limestone of Burdiehouse. TRANS R SOC EDINBURGH 13, 167–282.Google Scholar
Irwin, R. & Walkden, G. M. 1991. Pouring cold water on the East Kirkton hot spring. ABSTR 30TH ANN MTG BSRG.Google Scholar
Kaplan, I. R. & Rittenberg, S. C. 1964. Microbiological fractionation of sulphur isotopes. J GEN MICROBIOLOGY 34, 195–212.CrossRefGoogle ScholarPubMed
Knauth, L. P. & Epstein, S. 1975. Hydrogen and oxygen isotope ratios in silica from the Joides deep sea drilling project. EARTH PLANET SCI LETT 25, 1–10.CrossRefGoogle Scholar
Knauth, L. P. & Epstein, S. 1976. Hydrogen and oxygen isotope ratios in nodular and bedded cherts. GEOCHIM COSMOCHIM ACTA 40, 1095–108.CrossRefGoogle Scholar
Kolodny, Y. & Epstein, S. 1976. Stable isotope geochemistry of deep sea cherts. GEOCHIM COSMOCHIM ACTA 40, 1195–209.CrossRefGoogle Scholar
Levitan, M. A., Dontsova, E. I., Lisitsyn, A. P. and Bogdanov, Yu. A. 1975. The origin of chert in the sediments of the Pacific Ocean from data of oxygen isotopic analysis and a study of the distribution of chert. GEOCHEM INT 12, 95–104.Google Scholar
Longstaffe, F. J. & Ayalon, A. 1990. Hydrogen isotope geochemistry of diagenetic clay minerals from Cretaceous sandstones, Alberta, Canada: evidence for exchange. APP GEOCHEM 5, 657–68.CrossRefGoogle Scholar
Matsuhisa, Y., Goldsmith, J. R. & Clayton, R. N. 1979. Oxygen isotope fractionation in the system qtz-albite-anorthite-water. GEOCHIM COSMOCHIM ACTA 43, 1131–40.CrossRefGoogle Scholar
McGill, R. A. R., Hall, A. J., Braithwaite, C. J. R., Fallick, A. E. & Rolfe, W. D. I. 1990. Petrography and geochemistry of a lower Carboniferous, lacustrine, hot-spring deposit, East Kirkton, Bathgate, Scotland. PROC 12TH N ZEALAND GEOTHERM WORKSHOP 203–8.Google Scholar
Milliken, K. L. 1979. The silicified evaporite syndrome—two aspects of silicification history of former evaporite nodules from Southern Kentucky and Northern Tennesse. J SEDIMENT PETROL 49, 245–56.Google Scholar
Muir, R. O. & Walton, E. K. 1957. The East Kirkton Limestone. TRANS GEOL SOC GLASGOW 12, 157–68.CrossRefGoogle Scholar
Nielsen, H. 1979. Sulphur isotopes. In Jager, E. & Hunziker, J. C.Isotope geology, 283–312. Berlin, Heidelberg, New York: Springer-Verlag.CrossRefGoogle Scholar
Ohmoto, H. 1986. Stable isotope geochemistry of ore deposits. In Valley, J. W., Taylor, H. P. Jr. & O'Neil, J. R. (Eds) Stable isotopes in high temperature geological processes, 16, 491–560. Chelsea, Michigan: Min. Soc. of America, Book Crafters Inc.CrossRefGoogle Scholar
Ohmoto, H. & Rye, R. O. 1979. Isotopes of sulfur and carbon. In Barnes, H. L.Geochemistry of hydrothermal ore deposits, 2nd edn, 509–67. New York: J. Wiley & Sons, Ltd.Google Scholar
Pattrick, R. A. D., Coleman, M. L. & Russell, M. J. 1983. Sulphur isotopic investigation of vein lead-zinc mineralisation at Tyndrum, Scotland. MINER DEPOSITA 18, 477–85.CrossRefGoogle Scholar
Robinson, B. W. & Kusakabe, M. 1975. Quantitative preparation of SO2 for 34S/32S analysis from sulphides by combustion with cuprous oxide. ANAL CHEM 47, 1147–81.CrossRefGoogle Scholar
Rolfe, W. D. I., Durant, G. P., Fallick, A. E., Hall, A. J., Large, D. J., Scott, A. C., Smithson, T. R. & Walkden, G. M. 1990. An early terrestrial biota preserved by Viséan volcanicity in Scotland. In Lockley, M. G. & Rice, A. (Eds) Volcanism and fossil biotas. GEOL SOC AM SPEC PAP 244, 13–24.Google Scholar
Rolfe, W. D. I., Durant, G. P., Baird, W. J., Chaplin, C., Paton, R. L. & Reekie, R. J. 1994. The East Kirkton Limestone, Viséan, West Lothian, Scotland: introduction and stratigraphy. TRANS R SOC EDINBURGH: EARTH SCI 84, 177–188.Google Scholar
Savin, S. M. & Epstein, S. 1970a. The oxygen and hydrogen isotope geochemistry of clay minerals. GEOCHIM COSMOCHIM ACTA 34, 25–42.CrossRefGoogle Scholar
Scott, W. B. 1986. Nodular Carbonates in the Lower Carboniferous, Cementstone Group of the Tweed Embayment, Berwickshire; evidence for a former sulphate evaporite facies. SCOTT J GEOLOGY 22, 325–45.CrossRefGoogle Scholar
Sheppard, S. M. F. 1986. Igneous Rocks: III, Isotopic case studies of magmatism in Africa, Eurasia and oceanic islands. In Valley, J. W., Taylor, H. P. JR. & O'Neil, J. R. (Eds) Stable isotopes in high temperature geological processes. 16, 319–71. Chelsea, Michigan: Min. Soc. of America, Book Crafters Inc.CrossRefGoogle Scholar
Smith, R. A., Stephenson, D. & Monro, S. K. 1994. The geological setting of the southern Bathgate Hills, West Lothian, Scotland. TRANS R SOC EDINBURGH: EARTH SCI 84, 189–196.Google Scholar
Tarling, D. H. 1983. Palaeomagnetism, principles and applications in geology, geophysics and archaeology, Ch 9. Geological Applications, Fig. 9.23, 292–3. London, New York: Chapman & Hall.Google Scholar
Taylor, H. P. Jr. 1968. The oxygen geochemistry of igneous rocks. CONTRIB MINER PETROL 19, 1–71.CrossRefGoogle Scholar
Taylor, H. P. Jr. & Forester, R. W. 1971. Low-O-18 igneous rocks from the intrusive complexes of Skye, Mull, Ardnamurchan, Western Scotland. J PETROL 12, 465–97.CrossRefGoogle Scholar