| 江陵凹陷八岭山—花园多层系盐和盐泥构造及其形成机制 |
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| 引用本文： | 佘晓宇,龚晓星,吕鹏,梁斌,丁小辉,焦立波,唐婷婷.江陵凹陷八岭山—花园多层系盐和盐泥构造及其形成机制[J].现代地质,2013,27(4):765-773. |
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| 作者姓名： | 佘晓宇 龚晓星 吕鹏 梁斌 丁小辉 焦立波 唐婷婷 |
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| 作者单位： | (1.油气资源与勘探技术教育部重点实验室(长江大学)，湖北 武汉430100;2.长江大学 地球物理与石油资源学院，湖北 武汉 430100；3.中国石油 大港油田分公司，天津300280；4.中国石油(中国)有限公司 湛江分公司，广东 湛江524057) |
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| 摘 要： | 近年来在八岭山-花园背斜构造翼部有新的油气发现，有必要对其构造性质进行再认识。通过地震解剖，认为渔洋组-新沟嘴组(K2y-Ex)有盐和盐泥两类构造叠置，可进一步划分为盐丘-盐柱多层叠置构造、盐泥丘-盐泥株(柱)构造和盐泥丘构造；盐泥构造的形成是塑化的盐泥岩顺层蠕动使每一单层变厚、多层累加增厚的叠加效应结果，盐泥沿早期断层侵入或底辟导致逆断层的产生，使断层具有下正上逆的特点；差异负荷和火山热对流为其主导动力学机制；渔洋组-沙市组下段(K2y-Es下)盐丘-盐柱产生期为中始新世，主要形成期为晚渐新世，沙市组上段-新沟嘴组(Es上-Ex)盐泥构造产生期为晚渐新世，两者均于更新世基本定型；盐泥构造翼部地层-盐泥封挡和上倾尖灭岩性-盐泥封挡圈闭为潜在的油气藏勘探类型。
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| 关 键 词： | 八岭山-花园地区 盐和盐泥构造 构造组合 形成机制 |
Balingshan-Huayuan Multilayer Salt and Salt Mud Tectonics in Jiangling
Depression and Its Formation Mechanism |
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| SHE Xiao-yu,GONG Xiao-xing,L Peng,LIANG Bin.Balingshan-Huayuan Multilayer Salt and Salt Mud Tectonics in Jiangling
Depression and Its Formation Mechanism[J].Geoscience——Journal of Graduate School,China University of Geosciences,2013,27(4):765-773. |
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| Authors: | SHE Xiao-yu GONG Xiao-xing L Peng LIANG Bin |
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| Abstract: | New discovery of oil and gas in the flank of Balingshan-Huayuan anticline structure in the recent years makes it necessary to have a further understanding of its structural nature. Based on the interpretation of seismic profiles, it is considered that K2y-Ex is the superimposition of salt and mud tectonics, and can be divided into salt dome salt pillar multi layered superimposed structure, salt mud dome salt mud pillar structure and salt mud dome structure. The formation of salt mud tectonics was the superposition effect of plasticized salt mud stone bedding creep which led to thickening of the single layer and the multi layer cumulation. Reverse fault was formed by the salt mud intrusion along the early hanging wall of fault and the diapirism, thus the fault had the characteristics of the upper bed showing reverse and the lower showing normal. Differential loading and volcanic thermal convection were the dominant dynamic mechanisms. The salt dome-salt pillar of K2y Lower Es occurred at the Middle Eocene with the main formation stage of the Late Oligocene, the salt mud tectonics of upper Es-Ex occurred at the Late Oligocene, and both of them finalized basically in Pleistocene. The salt mud tectonic wing strata-salt mud sealing barrier trap and the lithologic updip pinch out salt mud sealing barrier trap are the potential oil and gas reservoir exploration types. |
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| Keywords: | Balingshan Huayuan area salt and salt mud tectonics structure assemble formation mechanism |
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