第29卷第5期 2015年10月
现代地质 GEOSCIENCE
青海木里三露天井田构造沉降史分析蒋艾林"，陈利敏1,2，秦荣芳1,3，李靖1,4，曹代勇1（1.中国矿业大学（北京）煤炭资源与安全开采国家重点实验室，北京100083；
2.北京城建勘测设计研究院有限责任公司，北京100101；
3.内蒙古矿业（集团）绿能非常规天然气勘查开发有限责任公司，内蒙古呼和浩特010010：
4.山西能源学院，山西晋中030600）
Vol. 29No.5
Oct.2015
摘要：根据三露天井田的煤田钻孔和地质勘查报告等资料，应用回剥技术分析研究区从晚古生代石炭纪以来的沉降史及构造演化特征，讨论了水合物形成与构造演化的关系。模拟结果显示，研究区自石炭纪以来主要经历了4期沉降和3 期抬升：石炭纪至晚三叠世，沉降由慢转快，沉降幅度较大；晚三叠世末期，由于晚印支运动影响构造抬升；早侏罗世至早白垩世，快速沉降；晚白垩世，燕山运动导致区域隆升；中新世发生较快速沉降；上新世受青藏高原隆升影响，
造沉降对天然气水合物形成的控制作用体现在影响烃源岩成熟度和温压稳定带的形成两方面。关键词：沉降史；构造演化；天然气水合物；三露天井田
中图分类号：P542；P618.102
文献标志码：A
文章编号：10008527(2015)05109607
Tectonic Subsidence History of Sanlutian Mining Field inMuli.Qinghai
JIANG Ai-lin', CHEN Li-min'2, QIN Rong-fang'3, LI JING'-, CAO Dai-yong
( 1. State Key Laboratory of Coal Resources and Safe Mining, China Uniersity of Mining & Technology, Beijing100083, China ;
2. Bejing Urban Construction Exploration & Surieying Design Research Institute Co. , Led. , Bejing 100101, China;
3. The Green Energy Unconzentional Gas Exploration Derelopment Co., Ld., Imner Mongolia Mining Group, Huhhot, Inner Mongolia O10010, China
4. Shanxi Energy Institute,Jinzhong, Shanxi 030600,China)
Abstract : According to drillhole and geological survey report of Sanlutian mining field in Juhugeng mining area, we inversed and analyzed the subsidence history of Sanlutian mining field by back-stripping method and dis-cussed the relationship between hydrate formation and tectonic evolution. The simulated results showed that the study area experienced four stages of subsidence and three stages of uplift since Carboniferous period as follows : subsiding slowly then rapidly with larger subsidence scope from Carboniferous to Late Triassic, uplifting and denudating in the end of Late Triassic by the late Indosinian movement, subsiding rapidly from Early Jurassic to Early Cretaceous, uplifting and denudating in Late Cretaceous by Yanshan movements, subsiding rapidly in Mi-ocene epoch, uplifting rapidly with the uplift of the Tibetan Plateau in Pliocene epoch, and subsiding rapidly in Quaternary period. The simulation result of subsidence history provides a quantitative or semi-quantitative value of parameters for the tectonic evolution in the study area. The control of the tectonic subsidence on the forma tion of natural gas hydrate shows the two aspects, the maturity of source rocks and the formation of hydrate stable zone.
Key words: subsidence history; tectonic evolution; natural gas hydrate; Sanlutian mining field
收稿日期：2015-03-12；改回日期：2015-09-01；责任编辑：潘令枝。
基金项目：高等学校博士学科点专项科研基金项目（20110023110003）；中央高校基本科研业务费专项资金项目（2010YD11)；神
华青海能源开发有限责任公司项目青海省天峻县聚乎更煤矿区三露天天然气水合物调查评价"（SHQHNY201307001）。
作者简介：蒋艾林，男，硕士研究生，1991年出生，矿产普查与勘探专业，主要从事煤田地质构造与天然气水合物研究。
Email：ailin20@foxmail.com。