Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F14%3A00440209" target="_blank" >RIV/67985530:_____/14:00440209 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia
Original language description
Volcanic structures often form significant part of sedimentary basins. They represent a serious obstacle to seismic and magnetic surveys, but may become a focus in rift basin description. We encountered a different case ? an assumed volcanic structure inthe forefield of an open-pit brown coal mine. To confirm the presence of such a hidden volcanic body we performed a gravity survey in very challenging topographic and noise conditions at the edge of the mine. Final complete Bouguer anomalies were treated by various filtering techniques including residual separation, horizontal gradients, vertical derivatives, etc. We extracted a positive residual gravity anomaly and delineated its extent from the gradient data. As well, we studied rock samples densities and porosity. It was found that the assumed volcanic rock (trachyandesite) and partly the related breccias exhibit significantly higher density than the surrounding and overlaying Tertiary sediments of the Most Basin.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 20th European Meeting of Environmental and Engineering Geophysics - Near Surface Geoscience
ISBN
978-94-6282-027-2
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
"Tu PA2 03/1"-"Tu PA2 03/5"
Publisher name
EAGE
Place of publication
Houten
Event location
Athens
Event date
Sep 14, 2014
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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