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SPOROPOLLEN ASSEMBLAGES FROM THE HAOJIAGOU AND BADAOWAN FORMATIONS AT THE HAOJIAGOU SECTION OF RMQI,XINJIANG AND THEIR STRATIGRAPHICAL SIGNIFICANCE

Huang Pin

Abstract

The Haojiagou section is located at southern margin of the Junggar Basin, Xinjiang, and about 50 km southwest of rumqi city. Abundant sporo-pollen of about 301 species referred to 98 genera were discovered from the Haojiagou and Badaowan Formations at the Haojiagou section. Based on the sporopollen contents and characteristics, five assemblages have been proposed in ascending order, namely 1.Concavisporites -Dictyophyllidites - Chasmatosporites - Cycadopites Assemblage, 2.Cyathidites - Deltoidospora - Chasmatosporites-Cycadopites Assemblage, 3.Cyathidites-Brevilaesuraspora-Chasmatosporites-Cycadopites-Perino-pollenites Assemblage, 4.Cyathidites-Osmundacidites-Pinuspollenites-Piceites-Perinopollenites Assemblage, 5. Cyathidites-Contignisporites Assemblage.

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Key concepts: Assemblage (archaeology), Geology, Section (typography), Paleontology, Margin (machine learning), Structural basin, Pollen, Geography