EARLY JURASSIC FLORA AND PALEOENVIRONMENT IN DAXIAN AND KAIXIAN COUNTIES, NORTH BORDER OF SICHUAN BASIN，CHINA
Huang Qisheng
Abstract：The present paper deals with the composition, features and ages of the flora in the Zhenzhuchong Formation, north border of Sichuan basin. The plant fossils obtained are identified to belong to 95 species of 47 genera. This flora should be classified as Ptilophyllum-Coniopteris assemblage in the upper part of the Dictyophyllum-Clathropteris series in age equivalent to the Pliensbachian-Aalenian stage. In this sense, it can be closely associated with the Thaumatopteris zones in Greenland and Sweden. This paper also discusses the Jurassic paleoclimate in the Sichuan basin with the emphasis on the relationship between the Early Jurassic sedimentary environment and the coal-forming. It concludes that the increase of the humidity and the decrease of the temperature may have favored the formation of the coal.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 221-228 )