Počet záznamů: 1
Magnetotelluric study of the eastern margin of the Bohemian Massif: relations between the Cadomian, Variscan, and Alpine orogeny
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SYSNO ASEP 0490839 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Magnetotelluric study of the eastern margin of the Bohemian Massif: relations between the Cadomian, Variscan, and Alpine orogeny Tvůrce(i) Klanica, Radek (GFU-E) RID, ORCID, SAI
Červ, Václav (GFU-E) ORCID, RID
Pek, Josef (GFU-E) ORCID, RIDZdroj.dok. International Journal of Earth Sciences. - : Springer - ISSN 1437-3254
Roč. 107, č. 8 (2018), s. 2843-2857Poč.str. 15 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova magnetotelluric ; tectonics ; Bohemian Massif ; Brunovistulicum Vědní obor RIV DE - Zemský magnetismus, geodézie, geografie Obor OECD Physical geography CEP LM2015079 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA17-19877S GA ČR - Grantová agentura ČR Institucionální podpora GFU-E - RVO:67985530 UT WOS 000448579500012 EID SCOPUS 85049584560 DOI 10.1007/s00531-018-1631-9 Anotace Eastern margin of the Bohemian Massif is a geologically remarkable area, where three different orogenic cycles are meetingthe oldest, Cadomian, building a basement for younger cycles, a younger, Variscan, and the youngest, Alpine, covering the older units. In the past, this area was investigated by gravimetry and seismic methods. Recently, we have supplemented broadband magnetotelluric measurements within the period range of 0.001-1000s, carried out on 29 stations distributed along a 140-km-long west-east regional profile. The profile direction was based on local geology and then confirmed by a dimensionality and directionality analysis. Data showed moderate effects of cultural noise in the signals and could be successfully processed by robust methods. We carried out a 2D inversion of the data using the REBOCC approach. The inversion results confirm the known near-surface geology and reveal deeper structures. On the west and in the central part of the profile, units of the Bohemian massif (the Moldanubian Zone, the Brunovistulicum) are interpreted. In the east, the Western Carpathians units are encountered. Short-period data agree well with the known near-surface geology of all inner smaller units and bring new knowledge in particular on their thickness. In the shallow structure, several conductive anomalies have been identified which are hypothesized to be related to graphitized layers in the Moldanubian Zone. From long-period data, a new image of the Moldanubian/Brunovistulicum contact and about the structure of the Brunovistulicum, especially the Brunovistulian Massifs, was obtained. Pracoviště Geofyzikální ústav Kontakt Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Rok sběru 2019
Počet záznamů: 1