A Gunflint-type microbiota from the Duck Creek dolomite, Western Australia
Tóm tắt
Two billion year old black chert lenses from the Duck Creek formation, northwestern Western Australia, contain abundant organically preserved microorganisms which are morphologically similar to fossils of approximately the same age from the Gunflint formation, Ontario. Entities include: a relatively small (5–15 μm) coccoid taxon morphologically comparable toHuroniospora Barghoorn, a larger coccoid form comparable to an apparently planktonic alga from the Gunflint,Gunflintia Barghoorn, andEoastrion Barghoorn (Metallogenium Perfil'ev). Gunflint-type assemblages had a wide geographic distribution in middle Precambrian times, and these assemblages may eventually prove useful as biostratigraphic indices.
Tài liệu tham khảo
Awramik, S. M. and Barghoorn, E. S.: 1976,Abstr. 23rd Intern. Geol. Congr., Canberra, in press.
citation_journal_title=Science; citation_author=E. S. Barghoorn, J. W. Schopf; citation_volume=150; citation_publication_date=1965; citation_pages=337; citation_id=CR2
citation_journal_title=Science; citation_author=E. S. Barghoorn, S. A. Tyler; citation_volume=147; citation_publication_date=1965; citation_pages=563; citation_id=CR3
Barghoorn, E. S., Knoll, A. H., Dembicki, H., and Meinschein, W. G.: 1976,Geochim. Cosmochim. Acta, in press.
citation_journal_title=Science; citation_author=P. E. Cloud; citation_volume=148; citation_publication_date=1965; citation_pages=27; citation_id=CR5
citation_journal_title=Am. J. Sci.; citation_author=P. E. Cloud, M. A. Semikhatov; citation_volume=267; citation_publication_date=1969; citation_pages=1017; citation_id=CR6
citation_journal_title=Can. J. Earth Sci; citation_author=W. Compston, P. A. Arriens; citation_volume=5; citation_publication_date=1968; citation_pages=561; citation_id=CR7
Daniels, J. L.: 1970,Explan. Notes Geol. Surv. W. Austral. 1: 250,000 Geol. Ser., Sheet SF/50-14 (Wyloo), 18 pp.
citation_journal_title=Rev. Paleobot. Palynol; citation_author=C. Downie; citation_volume=1; citation_publication_date=1967; citation_pages=269; citation_id=CR9
citation_journal_title=J. Paleontol.; citation_author=S. Golubic, H. J. Hofmann; citation_volume=50; citation_publication_date=1976; citation_pages=1074; citation_id=CR10
citation_journal_title=J. Paleontol.; citation_author=H. J. Hofmann; citation_volume=50; citation_publication_date=1976; citation_pages=1040; citation_id=CR11
Kline, G.: 1976,Precambrian Res., in press.
Knoll, A. H., Barghoorn, E. S. and Awramik, S. M.: 1977,J. Paleontol., in prep.
MacLeod, W. N.: 1966,Geol. Surv. W. Australia Bull.
117.
citation_journal_title=Science; citation_author=L. A. Nagy; citation_volume=183; citation_publication_date=1974; citation_pages=514; citation_id=CR15
Naumova, S. N.: 1961,Intern. Geol. Cong., 21st Dokl. Sov. Geol. 109.
citation_title=Capillary Methods of Investigating Organisms; citation_publication_date=1969; citation_id=CR17; citation_author=B. V. Perfil'ev; citation_author=D. R. Gabe; citation_publisher=U. Toronto Press
Plaza, C. L.: 1975,Unpublished Bachelor's Thesis, Princeton University.
citation_journal_title=Am. J. Sci; citation_author=M. E. Raaben; citation_volume=267; citation_publication_date=1969; citation_pages=1-18; citation_id=CR19
citation_journal_title=J. Paleontol.; citation_author=J. W. Schopf; citation_volume=42; citation_publication_date=1968; citation_pages=651; citation_id=CR20
Schopf, J. W.: 1975,Abstr. XII Intern. Bot. Congr., Leningrad.
citation_journal_title=Science; citation_author=J. W. Schopf, E. S. Barghoorn; citation_volume=156; citation_publication_date=1967; citation_pages=508; citation_id=CR22
citation_journal_title=J. Paleontol.; citation_author=J. W. Schopf, J. M. Blacic; citation_volume=45; citation_publication_date=1971; citation_pages=925; citation_id=CR23
Schopf, J. W., Ford, T. D. and Breed, W. J.:Science
179, 537.
citation_journal_title=Am. Mineral.; citation_author=R. Siever; citation_volume=42; citation_publication_date=1957; citation_pages=821; citation_id=CR25
Siever, R.: 1977, in Ponnamperuma, C. (ed.)Chemical Evolution of the Precambrian, Academic Press, in press.
citation_journal_title=V.N.I.G.R.I. Leningrad, Mem.; citation_author=B. V. Timofeev; citation_volume=129; citation_publication_date=1959; citation_pages=350; citation_id=CR27
citation_journal_title=Econ. Geol.; citation_author=A. F. Trendall; citation_volume=68; citation_publication_date=1973; citation_pages=1023; citation_id=CR28
citation_journal_title=Palaeontol. Assoc. London, Spec. Papers Palaentol.; citation_author=M. R. Walter; citation_volume=11; citation_publication_date=1972; citation_pages=1; citation_id=CR29
citation_journal_title=Nature; citation_author=M. R. Walter, A. D. T. Goode, W. D. M. Hall; citation_volume=261; citation_publication_date=1976; citation_pages=221; citation_id=CR30