Evolution and subsidence-tectonic inversion history of Kartake paleo-uplift in Tazhong area of Tarim Basin
Evolution and subsidence-tectonic inversion history of Kartake paleo-uplift in Tazhong area of Tarim Basin
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发表时间：
2011
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通讯作者：
F. Yu
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作者：
F. Yu
古隆起是盆地构造演化过程中形成的一种特殊构造，古隆起构造演化对盆地油气生成、运移和成藏产生影响。根据地震剖面、钻井资料和测井资料，对塔里木盆地中部喀尔塔克隆起的构造特征和反演历史进行了研究。震旦纪至早奥陶世，喀尔塔克隆起呈北向斜坡状，中奥陶世末，由于塔里木盆地应力由拉转压，断裂反转，上述断裂构造样式形成，喀尔塔克隆起雏形基本形成。晚奥陶世至中泥盆世末，隆起形态基本形成。中泥盆世至中新世虽然是强烈的构造运动阶段，但卡竹隆起的形态并未发生变化。
Paleo-uplift is a particular structure which was formed during the basin tectonic evolution.Paleo-uplift tectonic evolution impacted on hydrocarbon generation,migration and accumulation in the basin.Tectonic characteristics and inversion history of Kartake uplift in central Tarim Basin were researched on the basis of seismic cross-section,drilling data and logging data.The results show that Kartake uplift displayed more performances for the basement-involved fracture,a number of "Y"-shaped fractures,flower-shaped structure pattern,and the majority of fractures broken down to Permian top.From Sinian to Early Ordovician,Kartake uplift was a northward slope,then at the end of Middle Ordovician,the aforementioned fracture tectonic style formed and the embryonic shape of Kartake uplift basically formed because the stress in the Tarim Basin changed from tension to compression and fractures was inversed.From Late Ordovician to the end of Middle Devonian,uplift shape was set basically,and structural feature was remained so far.Although from Middle Devonian to Miocene was a strong tectonic movement phase,the form of Katake uplift didn t change.