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- W2373953485 abstract "To recognize both sedimentary environment and facies is very significant for palaeogeographic reconstruction and hydrocarbon exploration. In this study, some samples are obtained from Changxing-Feixianguan formations of Puguang area, northeastern Sichuan Basin at first; and then, not only longitudinal distribution but also change laws of formations are studied by means of many geochemical indexes and environment parameters such as Mn/Ti, Mn/Fe, Rb/Sr, which are more sensitive to sedimentary environment change; at last, some relationship among distribution, change laws and sea-level change is derived. Results demonstrate that: (1) from Changxing to Feixianguan formations, the trace element might change regularly, i.e., a gradual reduction of Mn/Ti and Mn/Fe ratios reflecting either a sea-level decrease from late Changxing to Feixianguan period or this period being generally in regressive period; (2) for Feixianguan 1 and 2 members which are all composed of oolitic dolomite, the largest Rb/Sr ratio reflecting a lower sea level, humid climate and leaching exposure, resulting in a deposition of platform marginal bioreef and shoal facie; and (3) for Feixianguan 3 Member which is composed of clay dolomite, there are a small Rb/Sr ratio, lower sea level, dry climate, resulting in a deposition of restricted platform tidal-platform facies." @default.
- W2373953485 created "2016-06-24" @default.
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- W2373953485 date "2011-01-01" @default.
- W2373953485 modified "2023-09-23" @default.
- W2373953485 title "TRACE ELEMENT AND SEA-LEVEL CHANGE OF CHANGXING-FEIXIANGUAN FORMATIONS IN PUGUANG GAS RESERVOIR" @default.
- W2373953485 hasPublicationYear "2011" @default.
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