Chitinozoans and the age of the Soom Shale, an Ordovician black shale Lagerstätte, South Africa
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منابع مشابه
An Ordovician variation on Burgess Shale-type biotas
The Cambrian Burgess Shale-type biotas form a globally consistent ecosystem, usually dominated by arthropods. Elements of these communities continued into the Early Ordovician at high latitude, but our understanding of ecological changes during the Great Ordovician Biodiversification Event (GOBE) is currently limited by the paucity of Ordovician exceptionally preserved open-marine faunas. Here ...
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Identification of specific environments of deposition represented by black shales has been a traditional puzzle for geologists. The present study was undertaken to see whether sedimentary structures, especially biogenic structures, could be used to subdivide the inclusive term "black shale facies." Because of the prevalence of infauna, modern marine muds are typically bioturbate; only where ani...
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The Kuhkamar shale with a thickness of 354 m is composed of siliciclastic rocks (sandstone and shale). Petrography studies of the sandstones in this area show two petrofacies including arkose and sub-arkose. These sandstones composed of sub rounded to moderately sorted; therefore, compositionaly to texturaly, they are immature to submature with mono and polycrystalline quartz and k-feldespar. I...
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s with Programs, v. 13, p. 491. LASK, P.B., 1993, The hydrodynamic behavior of sclerites from the trilobite Flexicalymene meeki: PALAIOS, v. 8, p. 219–225. MILLER, K.B., BRETT, C.E., and PARSONS, K.M., 1988, The paleoecologic significance of storm-generated disturbance within a Middle Devonian muddy epeiric sea: PALAIOS, v. 3, p. 35–52. PIPER, D.J.W., and STOW, D.A.V., 1991, Fine-grained turbid...
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ژورنال
عنوان ژورنال: Journal of Micropalaeontology
سال: 2009
ISSN: 2041-4978
DOI: 10.1144/jm.28.1.53