Diagenetic controls on multiphase pyritization of graptolites

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Authors:Underwood, C. J.; Bottrell, S. H.
Author Affiliations:Primary:
University of Bristol, Department of Geology, Bristol, United Kingdom
Other:
University of Leeds, United Kingdom
Volume Title:Geological Magazine
Source:Geological Magazine, 131(3), p.315-327. Publisher: Cambridge University Press, London, United Kingdom. ISSN: 0016-7568
Publication Date:1994
Note:In English. 48 refs.; illus., incl. 2 tables
Summary:A wide variety of pyrite morphotypes may be observed within graptolites preserved within mudstone sequences, including microcrysts, framboids, euhedral crystals, and 'floriform' overgrowths. All are illustrated with SEM photomicrographs. All of the diagenetic pyrite has isotopically light sulphur compositions, indicating formation during early diagenesis. [C.H.D.]
Subjects:Carbon; Clastic rocks; Diagenesis; Framboidal texture; Graptolithina; Isotopes; Matrix; Metasomatism; Mudstone; Organic compounds; Planktonic taxa; Pyritization; S-34/S-32; Sedimentary rocks; Stable isotopes; Sulfur; Textures; Invertebrata; Organic materials
Abstract Numbers:95M/861
Record ID:1996008642
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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