Tarim Basin and new insights into paleo-uplift origin Analysis of regional structural cross section of the North and Central

被引：0
|
作者：
Liu C. [1 ]
Zhang Y. [1 ]
Zhang Y. [1 ]
Sun F. [1 ]
Chen J. [1 ]
He D. [1 ]
机构：
[1] School of Energy Resources, China University of Geosciences, Beijing
来源：
Oil and Gas Geology | 2018年 / 39卷 / 05期
关键词：
Fault characteristics; Structural cross section; Tabei uplift; Tarim Basin; Tazhong low salient;
D O I：
10.11743/ogg20180514
中图分类号：
学科分类号：
摘要：
The Tabei uplift and Tazhong low salient are important strategic plays for oil and gas exploration in Tarim Basin.It will be of positive value for petroleum exploration and research ahead to study and compare their stratum systems,fault characteristics and geological structural differences.In order to reveal the geological structures and origins of the two paleo-uplifts,we selected a large NS-trending regional structural cross section in central Tarim Basin for a fine interpretation and description based on fault-related fold theories,combined with the latest drilling,logging,and seismic data.The results indicate that:the Tabei uplift and Tazhong low salient are the Paleozoic paleo-uplifts controlled by the large-scale basal fault bend folds.Stratum displacement caused by compressive stress from south to north is partly absorbed by Tazhong low salient,and then continues to pass to the northern Tarim area through the Manjar Depression,with the remaining displacement absorbed by Tabei uplift at last.The period from the Middle-to-Late Caledonian to the Early Hercynian is the main formation period of the two paleo-uplifts.However,Tabei uplift suffers damage due to the thrusting of the southern Tianshan fold belt at late stage,the Paleozoic and Mesozoic sequences suffer extensive denudation,while the Cenozoic gets thickened from north to south.Thus it is difficult to recognize the front wings of the fault bend folds.Tazhong low salient experiences intensive Paleozoic tectonic movement,but doesn't experience any large-scale faulting activities during the Mesozoic and Cenozoic,so it is stable in geometry. © 2018, OIL & GAS GEOLOGY Editorial Board. All right reserved.
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页码：1001 / 1010
页数：9
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