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Book Chapter

Sedimentological Characteristics of Upper Triassic (Cordevolian) Circular Quiet Water Coral Bioherms in Western Slovenia, Northwestern Yugoslavia

By
Jože Čar
Jože Čar
Institute For Karst,Postojna, Yugoslavia
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Dragomir Skaberne
Dragomir Skaberne
University of Ljubljana,Lubljana, Yugoslavia
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Bojan Ogorelec
Bojan Ogorelec
Geological Survey,Ljubljana, Yugoslavia
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Dragica Turnšek
Dragica Turnšek
Institute For Paleontology,Ljubljana, Yugoslavia
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Ladislav Placer
Ladislav Placer
Geological Survey,Ljubljana, Yugoslavia
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Published:
January 01, 1981

ABSTRACT

Six circular-shaped quiet water coral bioherms of Upper Triassic (Cordevolian) age, ranging from 25 to 140 meters in height and from 50 to 180 meters in diameter, outcrop 20 kilometers north-northwest of Idrija in western Slovenia, northwestern Yugoslavia. Within the biohermal depositional area two distinctive lithological and faunal associations have been identified. These are: 1. the biohermal core and marginal breccias which pass into, 2. surrounding bedded biopelmicritic limestones. The biohermal cores are composed primarily of corals and consist of various biolithites and biopelmicritic limestones. A relatively quiet water depositional environment is suggested for these bioherms. This interpretation is reinforced by the occurrence of only modest accumulations of marginal breccias, and the occurrence of layered pelbiomicritic limestones between individual bioherms. These circular bioherms are surrounded and embedded in a sequence of interbedded sandstones and shales.

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Contents

SEPM Special Publication

European Fossil Reef Models

Donald Francis Toomey
Donald Francis Toomey
Cities Service Company Midland Texas
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SEPM Society for Sedimentary Geology
Volume
30
ISBN electronic:
9781565761605
Publication date:
January 01, 1981

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