STUDIES OF MODALITY ASSEMBLE OF BOTRYOCOCCUS FROM THE TRIASSIC YANCHANG FORMATION IN THE ORDOS BASIN,NORTHWEST CHINA
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Abstract:
Through detailed micofossil analysis of the Triassic Yanchang Formation in the Xifeng area southwestern Ordos Basin,abundant algal fossils were found from the hydrocarbon source rocks of the Ch 7-3 to Ch 7-2 Section.Their abundance level is high but diversity low;the kind also is monotony.The palynological fossils are mainly composed of very abundant Leiosphaeridia and Botryococcus.
