Early period of early Permian tubular cyanobacteria reef in the eastern part of south Qinling Mountains

A typical reef occurs in the eastern part of south Qinling Mountains in Sanlixia, Xunyang, Shaanxi Province. The reef, extending in north-south direction, was built up by various kinds of calcareous tubes includingGirvanella, tubular cyanobacteria and problem microbials. The bioclastic bank, built u...

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Bibliographic Details
Published in:Science China. Earth sciences 2000-08, Vol.43 (4), p.347-355
Main Authors: Gong, Enpu, Fan, Jiasong
Format: Article
Language:English
Subjects:
Adaptability
Algae
Bacteria
Basements
Cyanobacteria
Cyanophyta
Geophysics
Mountains
Mudstone
Paleontology
Permian
Plate tectonics
Reefs
Seismology
Tubes
Work platforms
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Summary:A typical reef occurs in the eastern part of south Qinling Mountains in Sanlixia, Xunyang, Shaanxi Province. The reef, extending in north-south direction, was built up by various kinds of calcareous tubes includingGirvanella, tubular cyanobacteria and problem microbials. The bioclastic bank, built up by algal clasts, foraminiferous, and fusulinids, formed the reef basement, on which dasyclads baffle bioclasts formed the original bafflestone at a small scale on the reef basement, and then a mass of bindstone was made up by all kinds of calcareous tubes and algae. On lateral part the reef is cryptalgal mudstone. The reef that occurred in the geosynclinal area is so familiar with one of the platforms in many respects, such as in reef structure, morphology and building mold. This indicates that building organisms have amazing adaptability and identity for building capacity in the two kinds of geotectonic background mentioned above.
ISSN:1006-9313
1674-7313
1862-2801
1869-1897
DOI:10.1007/BF02959445