| 塔中隆起古生代构造演化的分段差异性分析 |
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| 引用本文： | 李萌,逄思宇,郭健.塔中隆起古生代构造演化的分段差异性分析[J].化工矿产地质,2016(4):215-220. |
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| 作者姓名： | 李萌 逄思宇 郭健 |
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| 作者单位： | 1. 中国冶金地质总局矿产资源研究院,北京,101300;2. 中化地质矿山总局化工地质调查总院,北京,100013 |
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| 基金项目： | ?国家重点研发计划(2016YFC0600210)；国家重点基础研究发展计划973项目(2012CB214804) |
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| 摘 要： | 应用平衡剖面技术探讨了塔中隆起东、西段古生代构造演化的时空差异性。结果表明,早奥陶世塔中西段在伸展背景下拉张沉降,而塔中东段已出现隆起雏形。中奥陶世-晚奥陶世,塔中隆起构造形态基本定型,东段构造变形和隆升强度高于西段。该区东强西弱的分段差异性持续到中泥盆世末期。推测与来自阿尔金方向的压扭应力自东向西逐渐递减有关,同时形成了塔中隆起东敛西散的构造形态。
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| 关 键 词： | 塔中隆起 古生代 构造演化 分段差异 |
SEGMENTED DIFFERENCES OF THE PALEOZOIC TECTONIC EVOLUTION OF TAZHONG UPLIFT,TARIM BASIN |
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| Abstract: | Segmented differences of the Paleozoic tectonic evolution of Tazhong uplift were analyzed by using the balanced section technology. The analysis results indicate that western Tazhong uplift was in the extensional subsidence stage in the Early Ordovician, while morphology of the paleo-uplift had emerged in east part. The Tazhong uplift was formed basically in the Late Ordovician and structural deformation and uplift of eastern Tazhong uplift was stronger than the west part. This segmented differences continued until the late Middle Devonian. It is speculated that this is related to the torsional pressure from Altun direction, which is gradually decreasing from east to west, and the Tazhong uplift structural feature which is gathered in the east, dispersed in the west is formed simultaneously. |
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| Keywords: | Tazhong uplift Paleozoic Tectonic evolution Segmented differences |
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