摘要
运用磷灰石裂变径迹（AFT）法和镜质体反射率（Ro）法恢复了准噶尔盆地北部燕山中期的古地温梯度。研究结果显示,磷灰石裂变径迹（AFT）恢复的古地温梯度分布在3.5~3.9℃/hm;镜质体反射率（Ro）恢复的古地温梯度接近4.0℃/hm;平均接近3.7℃/hm,明显高于2.3℃/hm的现今地温梯度。准噶尔盆地北部燕山中期较高古地温场背景不仅对烃源岩热演化研究具有重要意义,同时也指示了准噶尔盆地北部存在一次燕山中期构造热事件。
In this paper,we apply the apatite fission track（AFT）and vitrinite reflectance（Ro）analysis to recover the paleogeothermal gradient in the middle of Yanshanian in northern Junggar Basin.The study shows that the paleogeothermal gradient recovered by AFT distributes in 3.5-3.9℃/hm;the paleogeothermal gradient recovered by Rois 4.0℃/hm;and the average is about 3.7℃/hm,which is significantly higher than the present geothermal gradient-2.3℃/hm.The background of higher paleogeothermal field in the middle of Yanshanian in northern Junggar Basin has an important influence on source rock researches,at the same time,it is a significant indication of a tectonic-thermal event in middle of Yanshanian.
出处
《地质科技情报》
CAS
CSCD
北大核心
2014年第4期31-36,共6页
Geological Science and Technology Information
基金
教育部高校博士点专项科研基金(20116101110006)
关键词
准噶尔盆地北部
燕山中期
磷灰石裂变径迹
镜质体反射率
古地温梯度
northern Junggar Basin
middle of Yanshanian
apatite fission track
vitrinite reflectance
paleogeothermal gradient
