Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Identification of a Hidden Volcano in an Open-pit Coal Mine by Gravity Survey, NW Bohemia
Popis výsledku anglicky
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.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
DC - Seismologie, vulkanologie a struktura Země
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
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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Počet stran výsledku
5
Strana od-do
"Tu PA2 03/1"-"Tu PA2 03/5"
Název nakladatele
EAGE
Místo vydání
Houten
Místo konání akce
Athens
Datum konání akce
14. 9. 2014
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
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