Dhosa Oolite - A Transgressive Condensation Horizon of Oxfordian Age in Kachchh, Western India
Abstract
Dhosa Oolite, 1-3 m in thickness, makes a distinctive lithostratigraphic unit in the Kachchh Basin, exhibiting a characteristic lithology of fossil-rich oolitic limestone, often nodular in appearance. It is characterized by the abundance of fossils, sometimes encrusted, absence of wave- or current-formed structures, dense burrowing, often recognizable as Thalassinoides burrows. The ammonoids of the different zones of Oxfordian age are commonly present; but often mixed up. These features suggest that the Dhosa Oolite is a transgressive condensation horizon representing the Oxfordian time span, related to the worldwide sea-level rise. The mixing of the fauna of various ammonite zones is probably a result of the combination of processes of slow rate of sedimentation, burrowing activity of the organisms, and storm events causing sediment reworking.Downloads
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Research Papers
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Published
1989-08-01
How to Cite
Singh, I. B. (1989). Dhosa Oolite - A Transgressive Condensation Horizon of Oxfordian Age in Kachchh, Western India. Journal of Geological Society of India, 34(2), 152–160. Retrieved from https://geosocindia.com/index.php/jgsi/article/view/66751