Occurrence and Geological Significance of Glauconite in Cenozoic Group of Jiyang Depression

GE Rui-quan

It is indicated that glauconites have been found in Cenozoic group strata in Zhan-che sag of Jiyang depression by a variety of thin section identification, and which are all in the primary state. Though deposited in different epochs, they are relatively concentrated in the study area, that is, mostly ccurred inthe strata of Cenozoic Paleogene from No.1 to No.4 of Shahejie Formation. Based on the analysis of biology fossils, it is considered that Zhan-che sag of Jiyang depression was ever invaded by the small-scalemarinetransgression under the background of the continental basin, which influenced sedimentary environment at that time, and occurred biologic variation and glauconite deposit to a certain extent. It is helpful to confirm the sedimentary environment by analyzing glauconite formation.

Research and Interpretation Centerof Geology Company, Shengli Petroleum Administration,SINOPEC, Dongying Shandong 257200

Received Date: 2003-02-26

Rev Recd Date: 2003-07-11

Publish Date: 2004-06-10

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Abstract: It is indicated that glauconites have been found in Cenozoic group strata in Zhan-che sag of Jiyang depression by a variety of thin section identification, and which are all in the primary state. Though deposited in different epochs, they are relatively concentrated in the study area, that is, mostly ccurred inthe strata of Cenozoic Paleogene from No.1 to No.4 of Shahejie Formation. Based on the analysis of biology fossils, it is considered that Zhan-che sag of Jiyang depression was ever invaded by the small-scalemarinetransgression under the background of the continental basin, which influenced sedimentary environment at that time, and occurred biologic variation and glauconite deposit to a certain extent. It is helpful to confirm the sedimentary environment by analyzing glauconite formation.

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Reference (9)

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Occurrence and Geological Significance of Glauconite in Cenozoic Group of Jiyang Depression

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