| 三江北段生达残留弧后盆地晚三叠世层序地层与演化 |
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| 关键词:Residual back-arc basin turbidite rock alkali series basalt sequence stratigraphy |
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| Upper Triassic Sequence Stratigraphy and Development of the Shengda Residual Back-arc Basin in Northern Three-River Area |
| The Shengda residual back-arc basin with a crust basement is overlain by the Upper Triassic sedimentary strata more than 5 000m in thickness.The active marginal sediments are composed of bathyal-abyssal,terrigenous,basinal and volcanic turbidite deposits,Characteristic extensive alkalic basalts and submarine exhalativehot water deposits.Through investigation of the cutcrop profile,Ⅰ-type and Ⅱ-type sequence boundaries are identified,and two Ⅰ-type and one Ⅱ-type sequences are recognized.It turus out that the factors of tectono,volcano,sedimentary supply and sea level have formed the sequence and are important for the development of the basin. |
| PENG Yong-min,PAN Gui-tang,LUO Jian-ning,LIU Jia-duo.1999.Upper Triassic Sequence Stratigraphy and Development of the Shengda Residual Back-arc Basin in Northern Three-River Area[J].Acta Geoscientica Sinica,20(3):318-324. |
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