气候变化领域集成服务门户(CCPortal): Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland

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DOI	10.1007/s00531-018-01674-7
	Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland
	Puziewicz J.; Czechowski L.; Grad M.; Majorowicz J.; Pietranik A.; Šafanda J.
发表日期	2019
ISSN	14373254
起始页码	673
结束页码	692
卷号	108 期号:2
英文摘要	Geotherms of four crustal profiles across the Variscan orogen in SW Poland have been constructed to better understand the variation in thermal state of the region. Seismic and drilling data as well as rock sequences in exposed parts of the orogen were used for Wilcza Góra (Sudetic Block), Polkowice–Rudna (Middle Odra Horst), Święciechowa (Wolsztyn–Leszno Horst) and Września (Szczecin–Miechów Synclinorium within TESZ) profiles. The palaeoclimate-corrected surface heat flow map and the heat-production calculations based on literature data enabled the construction of geotherms and estimation of Moho heat flow. Exception is the Polkowice–Rudna profile, where the surface heat flow was calculated using temperature measurements in underground copper mines, and K, U and Th contents and density/heat conductivity measurements in rocks drilled in the Middle Odra Horst were used to calculate geotherm. The basaltic lava migration through the lithospheric mantle and its effect on crustal geotherm in Wilcza Góra (area of Cenozoic alkaline volcanism at ca. 30–18 Ma) was shown to increase slightly both current surface and current Moho heat flow (by ca. 4 mW/m 2 ). The presented approach couples geological and geophysical information and thus differs from standard purely geophysical assessment of lithosphere thermal state. It shows that surface heat flow is enlarged to 84 mW/m 2 by granitic plutons in the upper crust in the Lubin–Polkowice site. Heat flow on the Moho varies from 28 to 34 mW/m 2 in sites located in the Sudetic- /Fore-Sudetic Blocks, Middle Odra Horst and Wolsztyn–Leszno Horst. Locally it may slightly increase because of extraneous heat input by Cenozoic basaltic volcanism, but the values close to 30 mW/m 2 are specific for mantle root of Saxothuringian Zone in SW Poland. Mantle heat flow is 36 mW/m 2 in Września site and supposedly is a manifestation of different nature of lithospheric mantle underlying TESZ. © 2019, The Author(s).
英文关键词	Geotherms; Heat flow; Lithology; Moho; SW Poland; TESZ; Variscan orogen
语种	英语
scopus关键词	crustal structure; geothermal gradient; heat flow; Hercynian orogeny; lithology; lithosphere; Moho; paleoclimate; Poland [Central Europe]; Calluna vulgaris; Nia
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147868
作者单位	Institute of Geological Sciences, University of Wrocław, Wrocław, Poland; Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland; Department of Physics, University of Alberta, Edmonton, Canada; Northern Geothermal Consult, Edmonton, Canada; Institute of Geophysics, Czech Academy of Sciences, Prague, Czech Republic
推荐引用方式 GB/T 7714	Puziewicz J.,Czechowski L.,Grad M.,et al. Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland[J],2019,108(2).
APA	Puziewicz J.,Czechowski L.,Grad M.,Majorowicz J.,Pietranik A.,&Šafanda J..(2019).Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland.International Journal of Earth Sciences,108(2).
MLA	Puziewicz J.,et al."Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland".International Journal of Earth Sciences 108.2(2019).