Deep lithospheric structure beneath the Polish part of the East European Craton as a result of magnetotelluric surveys

IF 0.5 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Studia Geophysica et Geodaetica Pub Date : 2019-05-27 DOI:10.1007/s11200-017-1264-7

Szymon Oryński, Wojciech Klityński, Anne Neska, Katarzyna Ślęzak

{"title":"Deep lithospheric structure beneath the Polish part of the East European Craton as a result of magnetotelluric surveys","authors":"Szymon Oryński, Wojciech Klityński, Anne Neska, Katarzyna Ślęzak","doi":"10.1007/s11200-017-1264-7","DOIUrl":null,"url":null,"abstract":"<p>A fundamental tectonic boundary between the Precambrian East European Craton (EEC) and the younger Phanerozoic mountain belts of Europe runs through Poland. Whereas the transition zone between both tectonical units was intensely investigated by means of electromagnetic methods in the past, the image of electric conductivity of the EEC itself has not been detailed so far. In the present study the lithospheric structure beneath the northeast of Poland is investigated by means of three parallel magnetotelluric profiles. As a result the Polish part of the craton does not appear as homogeneously highresistive as repeatedly reported. Beneath a shallow (from 2 to 4 km) sedimentary layer a less resistive structure (several hundred Ωm) under all three profiles in mid-crustal to upper mantle depth becomes apparent in the high-resistive background. It spatially coincides with a magmatic body of the Upper Proterozoic age called ?niardwy lake gabbro intrusion.</p>","PeriodicalId":22001,"journal":{"name":"Studia Geophysica et Geodaetica","volume":"63 2","pages":"273 - 289"},"PeriodicalIF":0.5000,"publicationDate":"2019-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s11200-017-1264-7","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Studia Geophysica et Geodaetica","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1007/s11200-017-1264-7","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}

引用次数: 9

Abstract

A fundamental tectonic boundary between the Precambrian East European Craton (EEC) and the younger Phanerozoic mountain belts of Europe runs through Poland. Whereas the transition zone between both tectonical units was intensely investigated by means of electromagnetic methods in the past, the image of electric conductivity of the EEC itself has not been detailed so far. In the present study the lithospheric structure beneath the northeast of Poland is investigated by means of three parallel magnetotelluric profiles. As a result the Polish part of the craton does not appear as homogeneously highresistive as repeatedly reported. Beneath a shallow (from 2 to 4 km) sedimentary layer a less resistive structure (several hundred Ωm) under all three profiles in mid-crustal to upper mantle depth becomes apparent in the high-resistive background. It spatially coincides with a magmatic body of the Upper Proterozoic age called ?niardwy lake gabbro intrusion.

查看原文本刊更多论文

根据大地电磁测量结果，东欧克拉通波兰部分的深层岩石圈结构

前寒武纪东欧克拉通(EEC)和较年轻的显生宙欧洲山脉带之间的基本构造边界贯穿波兰。尽管过去用电磁学方法对两个构造单元之间的过渡带进行了深入的研究，但迄今为止，欧共体本身的电导率图像尚未得到详细的研究。本文利用三条平行大地电磁剖面对波兰东北部的岩石圈结构进行了研究。因此，克拉通的波兰部分并不像反复报道的那样具有均匀的高电阻性。在浅层(2 ~ 4 km)沉积层下，在中地壳至上地幔深度的所有三条剖面下，在高电阻背景下，电阻率较低的构造(几百Ωm)变得明显。它在空间上与上元古代的岩浆体相吻合，称为?niardwy湖辉长岩侵入体。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Studia Geophysica et Geodaetica 地学-地球化学与地球物理

CiteScore

1.90

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Studia geophysica et geodaetica is an international journal covering all aspects of geophysics, meteorology and climatology, and of geodesy. Published by the Institute of Geophysics of the Academy of Sciences of the Czech Republic, it has a long tradition, being published quarterly since 1956. Studia publishes theoretical and methodological contributions, which are of interest for academia as well as industry. The journal offers fast publication of contributions in regular as well as topical issues.