SEDIMENTARY FACIES AND FRAMEWORK OF THE LOWER CRETACEOUS STRATA IN THE ZHOUKOU DEPRESSION
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Abstract
The sedimentary facies types of alluvial fans,fluvial deposits,fan deltas and normal deltaic deposits prevail in the Lower Cretaceous strata in the Zhoukou depression in which the Tanzhuang-Shenqiu facies zone appears in a EW-oriented narrow form.The sedimentary framework of the Zhoukou depression during Early Cretaceous time has been ascer-tained on the basis of the study of provenances,palaeotopography,palaeocurrent,water media and palaeoclimates.
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