运用磷灰石裂变径迹分析依连哈比尔尕山北缘盆山演化史  

Analysis of Basin-Mountain Evolution History in Northern Margin of Yilianhabierga Mountain by Using Apatite Fission-Track

作　　者：潘澄雨[1] 孟元库[1] 汪新文[1] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083

出　　处：《新疆石油地质》2012年第6期680-683,共4页Xinjiang Petroleum Geology

摘　　要：通过对准噶尔盆地磷灰石裂变径迹样品的表观年龄和封闭径迹长度分布特征的分析与正演模拟，定性、半定量地研究了该区相关岩石组合的地热演化史。研究结果表明，依连哈比尔尕山北缘主要经历了3个隆升-剥露阶段：第一阶段为晚侏罗世晚期-早白垩世初，剥蚀量在头屯河地区最大，为1．5-2．0km，柴窝堡南缘约1．0km，托斯台南缘约1．0km；第二阶段为晚白垩世-古近纪初，剥蚀量西大东小，托斯台南缘为1．5～2．0km，头屯河地区为1～1．5km，柴窝堡南缘为0．8～1．0km；第三阶段为渐新世末以来的大幅度隆升、剥露阶段，剥蚀量西大东小，托斯台南缘为4．0～5．0km，头屯河地区约3．0km，柴窝堡南缘为2．0—2．5km．By analyzing the apatite fission track data and forward modeling, the thermal history of relevant rock assemblage is studied quali- tatively to semi-quantitatively in Junggar basin. The result shows that three uplifting-exhumating stages appeared in northern Yilianhabier- ga mountain： ① From the late stage of Late Jurassic to the early stage of Early Cretaceous, with denuded thiekness in Toutunhe of 1.5-2.0 km, in the south edge of Chaiwopu of about 1.0 km, and in the south edge of Tuositai of about 1.0 km; ② from the Late Cretaceous to the Early Paleogene, with denuded thickness reducing from the west to the east, in the south edge of Tuositai of 1.5-2.0 km, in Toutunhe of 1- 1.5 km, and in the south edge of Chaiwopu of 0.8-1.0 km; ③ since the end of Oligocene, being large uplifting and exhumation stage, with denuded thickness reducing from the west to the east, in the south edge of Tuositai of 4.0-5.0 km, in Toutunhe of about 3.0 km, and in the south edge of Chaiwopu of 2.0-2.5 km.

关 键 词：准噶尔盆地 依连哈比尔尕山 磷灰石 裂变径迹 隆升-剥露史 剥蚀量 

分 类 号：TE111.1[石油与天然气工程—油气勘探]