APATITE AND ZIRCON FISSION TRACK DATA,EVIDENCES FOR THE MESOZOIC-CENOZOIC UPLIFT OF HUANGLING DOME,CENTRAL CHINA
APATITE AND ZIRCON FISSION TRACK DATA,EVIDENCES FOR THE MESOZOIC-CENOZOIC UPLIFT OF HUANGLING DOME,CENTRAL CHINA
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发表时间：
2009
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通讯作者：
Xu Si-huang
中科院分区：
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作者：
Xu Si-huang
根据8个磷灰石样品和3个锆石样品的裂变径迹测年证据，结合模拟的时-温热史，定量研究了黄陵穹隆中-新生代的隆升过程，结果表明，晚三叠世以来，黄陵穹隆的中-新生代隆升过程可分为4个阶段：① 200 ~160 Ma的缓慢隆升阶段; ② 160 Ma~98.4 Ma为第二次快速隆升冷却事件，③随后为相对热稳定期; 36.7Ma ~ 36.7Ma为新一轮加速隆升的第四阶段。两次快速隆升表明该区存在两次强烈的构造活动，当阳凹陷和宜昌斜坡是有利的油气聚集区中扬子块体的运聚作用
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:① 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.