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| PubMed | |
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Article by Qu, Y. X. |
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Article by Sun, G. S. |
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Article by Hu, Z. J. |
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Article by Zhang, J. Z. |
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Article by Wang, C. G. |
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Article by Su, R. |
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Article by Wang, G. |
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Article by Li, D. |
��Ǽ����ر��������ָ��յ�����٪����ʯƺȺ�²�ȸĪ�����д�����ij�¶��������ҪΪһ����м�Ҽ�̼�����ҡ����¡��϶ε���ʯ��Ƭ����Ϊɰ�Ҽ���ɰ�ҡ�ȸĪ�������¶ε����ȷ�������ӳ��ʯ�������Ծ��ֺ�������ֹ��ɣ�������Ծ�������ĺ���ռ������λ����ӳ��Ʒ�ķ�ѡ�Ϻá�������ΪȸĪ����ij��������������������࣬��������ǰԵ���ɰ�ҡ���ɰ�ҳ���Ϊ����ɰ��������ҪΪϸ����мɰ�ҡ���ʯɰ�ҡ�ʯӢɰ�ҵ�; �����¶���������ǰԵ���ǰ�����IJ��֣��϶���������ǰԵ���������ƽԭ��IJ��֡�
In Saiduopugangri region of northern Qiangtang Basin��the Quemocuo Formation of lower Jurassic Yanshiping Group is widely exposed�� The formation mainly consists of a set of clastic rocks intercalated with car- bonate rocks�� The clastic recks are sandstone and siltstone�� The granularity analysis of Quemocuo Formation reflects that rock components are made up of jumping components and suspending components�� and the former is main com- ponents��indicating that the separation of samples is good�� Finally�� the authors consider that the overall depositional environment of Quemocuo Formation shows delta facies��in which the main facies are the desposit of sandstone and siltstone of delta- front facies��and the main types of sandstone are detritus sandstone��arkose and quartz sandstone�� The lower member of the formation shows the delta- front facies which are near the prodelta�� while the upper member of the formation shows the delta- front facies which are near the delta plain facies��