Paleo-thermal lithosphere thickness determination method and device

A lithosphere and rock technology, applied in the field of determination methods and devices of paleothermal lithosphere thickness, can solve the problems of inability to determine paleothermal lithosphere thickness and evolution, etc.

Active Publication Date: 2016-01-13
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0005] The invention provides a method and device for determining the thickness of the paleothermal lithosphere, so as to

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  • Paleo-thermal lithosphere thickness determination method and device
  • Paleo-thermal lithosphere thickness determination method and device
  • Paleo-thermal lithosphere thickness determination method and device

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[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The embodiment of the present invention provides a method for determining the thickness of the paleothermal lithosphere, figure 2 It is a flow chart of the method for determining the thickness of the paleothermal lithosphere in an embodiment of the present invention. Such as figure 2 As shown, the method includes:

[0032] Step S201, obtaining the rock thermal conductivity and rock heat generation rate of each structural layer in the stu...

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Abstract

The invention discloses a paleo-thermal lithosphere thickness determination method and device. The method comprises the following steps: obtaining rock heat conductivity and rock heat production rate of each structure layer in a research area; establishing a paleostructure layer model of the research area in a preset geological time by utilizing a stratum backstripping technology, and determining the thickness of each structure layer according to the paleostructure layer model; obtaining paleo-surface heat flow value of each structure layer in a simulated manner according to vitrinite reflectance actually-measured value; calculating top boundary heat flow values of each structure layer according to the paleo-surface heat flow values, rock heat production rate and the thickness of each structure layer; determining shallow earth one-dimensional heat conduction geotherm according to the top boundary heat flow values, the thickness of each structure layer, the rock heat conductivity and rock heat production rate; and determining the depth of the shallow earth one-dimensional heat conduction geotherm intersecting with a mantle adiabatic line as the thickness of the paleo-thermal lithosphere. According to the method and device, the paleo-surface heat flow and paleo-surface thickness can be obtained, and furthermore, the thickness of the paleo-thermal lithosphere is calculated; and the problem that the paleo-thermal lithosphere thickness and evolution cannot be determined in the prior art is solved.

Description

technical field [0001] The invention relates to the technical fields of geothermal science and geophysics, in particular to a method and device for determining the thickness of the paleothermal lithosphere. Background technique [0002] From shallow to deep, the earth can be divided into three parts: crust, mantle and core. The lithosphere refers to the hard lithosphere layer in the shallow part of the earth compared with the asthenosphere, which is a high seismic wave velocity zone. The lithosphere mainly includes the entire crust and the top of the upper mantle, composed of granitic rocks, basaltic rocks and ultrabasic rocks. In the professional field of geology, according to different physical and chemical properties or parameters, people endow the lithosphere with different titles and meanings, such as seismological lithosphere, chemical lithosphere, thermal lithosphere, etc. [0003] The thermal lithosphere involved in the present invention refers to the lithosphere l...

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Application Information

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IPC IPC(8): G01V9/00G01N25/00
Inventor 常健邱楠生左银辉
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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