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Sedimentation in the Tabbowa Beds of Ceylon


Affiliations
1 Department of Geology, University of Oxford, India
2 Geological Survey of Ceylon, Colombo, Sri Lanka
     

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The Tabbowa Beds of Ceylon, Upper Jurassic in age, constitute a part of the Gondwana System, and consist mainly of arkose, siltstone and mudstone. In a recent study, five detailed sections with a total thickness of 360 feet were examined, and cyclic sedimentation, channelfill, and cross-bedding are described for the first time in these beds. On the basis of lithology and sedimentary features, the Tabbowa Beds are thought to have been deposited in a transitional environment in a semi-arid climate. The sediments were probably derived from the northwest (that is, the South Indian shield), the source area being one of tectonic instability.
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  • Sedimentation in the Tabbowa Beds of Ceylon

Abstract Views: 223  |  PDF Views: 3

Authors

N. J. Money
Department of Geology, University of Oxford, India
P. G. Cooray
Geological Survey of Ceylon, Colombo, Sri Lanka

Abstract


The Tabbowa Beds of Ceylon, Upper Jurassic in age, constitute a part of the Gondwana System, and consist mainly of arkose, siltstone and mudstone. In a recent study, five detailed sections with a total thickness of 360 feet were examined, and cyclic sedimentation, channelfill, and cross-bedding are described for the first time in these beds. On the basis of lithology and sedimentary features, the Tabbowa Beds are thought to have been deposited in a transitional environment in a semi-arid climate. The sediments were probably derived from the northwest (that is, the South Indian shield), the source area being one of tectonic instability.