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ORDOVICIAN LITHOFACIES AND STRATIGRAPHIC LACUNAE IN THE SOUTHERN PART OF THE CENTRAL TARIM,XINJIANG

Cai Xi-yao

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Abstract

The duration of the stratigraphic hiatus within Ordovician sequences is variable in different parts of the Central Tarim region.Evidence from conodont and chitinozoan assemblages suggests that although complete stratigraphic succession is preserved in the Guchenxu High,the Yijianfang and Qiaerbaq formations are mostly missing in the Southern Slope High.Lithostratigraphic distribution indicates that the sedimentary facies successively migrated westward from Early Ordovician onward at different distance and speed.

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What this paper is about

The duration of the stratigraphic hiatus within Ordovician sequences is variable in different parts of the Central Tarim region.Evidence from conodont and chitinozoan assemblages suggests that although complete stratigraphic succession is preserved in the Guchenxu High,the Yijianfang and Qiaerbaq formations are mostly missing in the Southern Slope High.Lithostratigraphic distribution indicates that the sedimentary facies successively migrated westward from Early Ordovician onward at different distance and speed.

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Available abstract

The duration of the stratigraphic hiatus within Ordovician sequences is variable in different parts of the Central Tarim region.Evidence from conodont and chitinozoan assemblages suggests that although complete stratigraphic succession is preserved in the Guchenxu High,the Yijianfang and Qiaerbaq formations are mostly missing in the Southern Slope High.Lithostratigraphic distribution indicates that the sedimentary facies successively migrated westward from Early Ordovician onward at different distance and speed.

Key concepts: Conodont, Geology, Ordovician, Paleontology, Facies, Ecological succession, Biostratigraphy, Palaeogeography

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ORDOVICIAN LITHOFACIES AND STRATIGRAPHIC LACUNAE IN THE SOUTHERN PART OF THE CENTRAL TARIM,XINJIANG — Research Paper | ScholarLens