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塔里木盆地孔雀河斜坡孔探1井奥陶系综合地层学

Xu-yun CHEN,Hui-li LI,Hai-tao L(U),Gen-fa ZHANG,Xi-yao CAI,Lin-na ZHANG,Xu CHEN

Journal of Stratigraphy（2017）

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Abstract
通过笔石划分孔雀河斜坡孔探1井奥陶系生物地层序列.黑土凹组上段灰黑色泥页岩属弗洛阶—达瑞威尔阶Acrograptus ellesae带-Undulograptus austrodentatus带,具有高自然伽马特征;下段灰色灰质泥岩属特马豆克阶Adelogra ptus victoriae-K iaero gra puts kiaeri带,与下伏突尔沙克塔格组黄灰色泥质灰岩分界清晰.黑土凹组—却尔却克组可划分出2个Ⅱ级层序以及4个Ⅲ级层序;3个Ⅱ级层序界面分别为早奥陶世开阔陆棚相向盆地相沉积转变面、中奥陶世盆地相向晚奥陶世浅海陆棚相沉积转换面、加里东晚期 印支期多期构造运动的叠合不整合面.SQ1与SQ2层序的TST与HST体系域为优质烃源岩发育段,SQ3层序的TST体系域也发育烃源岩.
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Key words
stratigrafic classification and correlation,graptolite,Ordovician,well KT1,Tarim Basin,Xinjiang
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