Heat Flow in Continental Rift Zones: A New Approach to Data Interpretation

IF 0.7 4区 地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS Journal of Volcanology and Seismology Pub Date : 2024-06-24 DOI:10.1134/S0742046324700581
M. D. Khutorskoy, E. A. Teveleva
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Abstract

This paper is concerned with the distribution of heat flow in the Baikal Rift Zone, the Shanxi-Liaohe Rift, the Jordan Rift, and in the Orly (Storoya) Trough in the northern Svalbard plate, as well as in the rift zone of Iceland. One notes an asymmetry in heat flow about the rift axial line compared with adjacent areas upon the background of its higher value. The origin of this asymmetry is due, not only to differences in the permeability of the faults in the sides of the rift structure, but also to planet-wide factors, in particular, the Coriolis force. The north–south rift structures considered here are situated in the northern hemisphere; their eastern flanksshow increased heat flow compared with the western flanks, and this is in agreement with the Coriolis force vector in the Earth’s northern hemisphere. The geothermal asymmetry in oceanic crustal divergent zones as noted previously is also seen in pull-apart structures of continental rift zones.

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大陆裂谷区的热流:数据解读新方法
摘要 本文研究了贝加尔裂谷带、山西-辽河裂谷、约旦裂谷、斯瓦尔巴特板块北部奥利(斯托洛亚)海槽以及冰岛裂谷带的热流分布。人们注意到,在热流值较高的背景下,裂谷轴线附近的热流与邻近地区的热流不对称。造成这种不对称的原因不仅是裂谷结构两侧断层的渗透性不同,而且还与整个地球的因素有关,特别是科里奥利力。本文考虑的南北裂谷结构位于北半球;与西侧相比,其东侧的热流有所增加,这与地球北半球的科里奥利力矢量一致。前面提到的大洋地壳分异带的地热不对称现象在大陆裂谷带的拉裂结构中也可以看到。
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来源期刊
Journal of Volcanology and Seismology
Journal of Volcanology and Seismology 地学-地球化学与地球物理
CiteScore
1.50
自引率
28.60%
发文量
27
审稿时长
>12 weeks
期刊介绍: Journal of Volcanology and Seismology publishes theoretical and experimental studies, communications, and reports on volcanic, seismic, geodynamic, and magmatic processes occurring in the areas of island arcs and other active regions of the Earth. In particular, the journal looks at present-day land and submarine volcanic activity; Neogene–Quaternary volcanism; mechanisms of plutonic activity; the geochemistry of volcanic and postvolcanic processes; geothermal systems in volcanic regions; and seismological monitoring. In addition, the journal surveys earthquakes, volcanic eruptions, and techniques for predicting them.
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