基于磷灰石裂变径迹约束的北黄海盆地热演化研究  

Study of thermal evolution of the North Yellow Sea basin based on apatite fission track data

作　　者：何将启[1,2] 丁汝鑫[3,4] 梁世友[5] 张蕾 单新建[1] 

机构地区：[1]中国地震局地质研究所,地震动力学国家重点实验室,北京100029 [2]中海石油(中国)有限公司勘探部,北京100010 [3]中山大学地球科学与地质工程学院,广州510275 [4]广东省地质过程与矿产资源探查重点实验室,广州510275 [5]中国石化石油勘探开发研究院无锡石油地质研究所,无锡214126

出　　处：《地球物理学报》2014年第10期3347-3353,共7页Chinese Journal of Geophysics

基　　金：国家自然科学基金(41102131);中央高校基本科研业务费专项资金(12lgpy22)资助

摘　　要：热演化历史的研究对于盆地分析和油气勘探具有重要意义.北黄海盆地是中国近海海域油气勘探程度较低的盆地之一,迄今未见专门的热演化研究报道.笔者利用北黄海盆地中生代砂岩的磷灰石裂变径迹分析结果,结合地质条件约束,模拟获得了中生代以来盆地的热演化史.结果表明,北黄海盆地经历了两次增温和两次冷却的热演化过程,并在100—80 Ma时盆地的热历史出现明显变化,表明在晚白垩世北黄海盆地发生过一次较大的构造-热事件.磷灰石裂变径迹分析所表明的北黄海盆地的热历史与盆地原型演化阶段相对应,而这种热历史和盆地的演化过程与区域构造背景相关.磷灰石裂变径迹所揭示的热演化史对于深化认识北黄海盆地的地质演化过程和油气勘探潜力具有重要意义.The North Yellow Sea basin is one of the basins with lower exploration degrees in offshore areas of China.As so far,there is no research and report about thermal evolution of this basin.This work studies the thermal evolution history of this area based on apatite fission track analysis,which lays a foundation for further research.The sandstone samples used for analysis we recollected from different wells down to different strata（upper Jurassic,lower Cretaceous and Paleogene）.The low-temperature thermal history modeling of fission track indicates that thebasin experienced two heating stages and two cooling stages since about 160 Ma,and an obvious temperature change might have occurred during 100—80Ma,which means that North Yellow Sea Basin had undergone a major tectonic-thermal event in that time.This modeling result suggests the thermal history is corresponding to basin prototype evolution in the North Yellow Sea basin,which has some significance to exploration of oil and gas in this region.

关 键 词：裂变径迹 磷灰石 热历史 北黄海盆地 

分 类 号：P314[天文地球—固体地球物理学]