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苏北盆地高邮—金湖凹陷古近系阜宁组细粒沉积岩纹层特征与成因*
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李维1,2, 朱筱敏1, 段宏亮2, 李鹤永2, 刘世丽2 |
Characteristics and forming mechanism of laminae fine-grained sedimentary rock of the Paleogene Funing Formation in Gaoyou and Jinhu sags,Subei Basin
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Li Wei 1,2, Zhu Xiao-Min 1, Duan Hong-Liang 2, Li He-Yong 2, Liu Shi-Li 2
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苏北盆地高邮—金湖凹陷阜二段具水动力变化的薄纹层状构造典型纹层特征 a—F1井岩心,781.5 m,大套水平层理中见小型交错层理,碳酸盐含量21.3%,长英质含量54.2%,黏土及其他矿物含量24.5%;b—图a的素描;c—图a的普通薄片(正交光,染色),石英、长石颗粒层状富集,具正韵律;d—Lin1井岩心,2658.83 m,细纹层平直连续且具2种以上颜色,碳酸盐含量37.4%,长英质含量25.4%,黏土及其他矿物含量37.2%;e—图d的普通薄片(正交光,染色),石英、长石颗粒层状富集,正韵律明显,发育微型冲刷面;f—图e的素描 |
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