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黑水-泉州地学断面四川盆地区段的地壳热结构模型及热演化史
引用本文:周江羽,吴冲龙,韩志军.黑水-泉州地学断面四川盆地区段的地壳热结构模型及热演化史[J].四川地质学报,1997(3).
作者姓名:周江羽  吴冲龙  韩志军
作者单位:中国地质大学资源学院
基金项目:国家“八五”重点攻关项目!85-102-01-01-03“典型盆地(凹陷)天然气运移、聚集的数学模式”
摘    要:在讨论黑水─泉州地学断面四川盆地区段地壳结构基本特征的基础上,采用一维稳态热传导方程计算了该区段内14个点的不同构造层段的古地温和古热流值,建立了地壳然结构模型,并对沉积盖层的热演化史进行了探讨。结果表明,四川盆地在晚三叠世末到晚侏罗世末这一时期是热演化程度最高的时期,且在晚侏罗世末期已趋于热均衡状态。各地区各构造层段具有不同的热结构特征和热演化史,它总体上受控于岩石圈厚度及莫霍面的理深,局部受控于各构造层的厚度、物性特征及岩浆活动等因素。

关 键 词:黑水-泉州地学断面  四川盆地  地壳热结构  热演化

CRUSTAL THERMAL STRUCTURE MODEL AND THERMAL EVOLUTION ALONG THE SICHUAN BASIN SEGMENT OF THE HEISHUI-QUANZHOU GEOTRAVERSE
Zhou Jiangyu, Wu Chonglong and Han Zhijiun.CRUSTAL THERMAL STRUCTURE MODEL AND THERMAL EVOLUTION ALONG THE SICHUAN BASIN SEGMENT OF THE HEISHUI-QUANZHOU GEOTRAVERSE[J].Acta Geologica Sichuan,1997(3).
Authors:Zhou Jiangyu  Wu Chonglong and Han Zhijiun
Abstract: Based on discussing the basic features of crustal structure along Sichuan basin segment of the Heishui-Quanzhou geotraverse, the one-dimensional ateady-state heat conduction is used to calculating 14 paleogeotherm and paleoheat flow values at different tectonic layers in different segments, the crustal heat structure model is established and probe into the heat evolution of sedimentary cover. The results indicate that Shichuan basin underwent heat evolution peak from the end of the Late Triassic to the end of the Late Jurassic and reached a heat-balance state at the end of the Late Jurassic, and each tectonic layer in a district has different heat structure and heat evolution. It is controlled Chiefly by the lithospheric thickness and the Moho depth, and partly by the thickness of various tectonic layers, physical properties and magmatic activity, etc.
Keywords:Heishui-Quanzhou geotraverse  Sichuan basin  crustal heat structure  heat evolution
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