摘要
通过对8个样品磷灰石裂变径迹年龄和3个样品锆石裂变径迹年龄的测定以及时间-温度热演化历史的反演，研究黄陵隆起中新生代的隆升作用过程，结果表明：黄陵隆起自晚三叠世200Ma开始隆升，表现为持续的隆升过程，经历了4个阶段：200Ma～160Ma±的缓慢隆升冷却作用阶段；160Ma～98．4Ma的快速隆升冷却阶段，岩体进入磷灰石部分退火带中；之后进入了一个构造相对稳定的阶段，样品滞留在部分退火带中；随后36．7Ma～28．4Ma以来，再次快速隆升剥蚀冷却。两次快速的隆升作用指示了中扬子地区两次强烈的构造活动和构造变革。作为印支期以来持续的古隆起，黄陵隆起周缘地区是中扬子地区海相油气运聚有利的指向区。
Based on fission-track dating evidences from 8 apatite samples and 3 zircon samples and on the modeled time-temperature thermal history, the Mesozoic-Cenozoic uplifting process of Huangling dome was quantitatively studied. The results indicated that the Mesozoic-Cenozoic uplifting process of Huangling dome since the Late Triassic could be divided into four stages with continuous uplifting and cooling=O the first stage of slow uplifting during 200 Ma-160 Ma;（2） the second stage of rapid uplifting cooling event at 160 Ma-98.4 Ma; （3） following by a period of relative thermal stability;（4） the fourth stage of a new phase of accelerated uplifting during 36.7 Ma-28.4 Ma to present. Two rapid uplifting indicated that there were two intense tectonic activities. Dangyang subbasin and Yichang clinoform were favorable for petroleum migration and accumulation in middle Yangtze block.
出处
《矿物岩石》
CAS
CSCD
北大核心
2009年第2期54-60,共7页
Mineralogy and Petrology
基金
中国石油化工集团有限公司海相重大前瞻性基础研究项目
中国地质大学优秀青年教师基金(CUGQNL0804)
关键词
裂变径迹
隆升
中-新生代
黄陵隆起
fission track
uplift
Mesozoic-Cenozoic
Huangling dome
