HEAT-FLOW IN THE BALTIC SHIELD - RESULTS OF THE LITHOSPHERIC GEOTHERMAL MODELING

被引：21

作者：

CERMAK, V

BALLING, N

KUKKONEN, I

ZUI, VI

机构：

[1] UNIV AARHUS, DEPT EARTH SCI, DK-8200 AARHUS, DENMARK

[2] GEOL SURVEY FINLAND, SF-02150 ESPOO, FINLAND

[3] BYELARUSSIAN ACAD SCI, INST GEOCHEM & GEOPHYS, 220600 MINSK, BELARUS

来源：

PRECAMBRIAN RESEARCH | 1993年 / 64卷 / 1-4期

关键词：

D O I：

10.1016/0301-9268(93)90068-D

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The results of heat flow measurements performed within the Baltic Shield and in its closest neighbourhood are reviewed. The regional distribution of the heat flow density is presented as a heat flow map. The characteristic heat flow density amounts to 35-40 mW m(-2) and is notably smaller than heat flow in the surrounding areas. The radiogenic heat production within the crust contributes to the observed surface heat flow by about 15-20 mW m(-2). This permits to estimate the Moho heat flow in the most stable parts of the shield to about 20 mW m(-2), and over 25-30 mW m(-2) in the surrounding platform to the south and east. Relatively low Moho temperatures of 350-500 degrees C characterize the crust/mantle boundary of the shield, increasing to 600-700 degrees C beneath the shield margins. The thermal thickness of the lithosphere of the shield can attain more than 200 km.

引用

页码：53 / 65

页数：13

共 59 条

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