Effect of small potassium-rich dykes on regional gamma-spectrometry image of a potassium-poor volcanic complex: A case from the Doupovské hory Volcanic Complex, NW Czech Republic
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F09%3A00000147" target="_blank" >RIV/00025798:_____/09:00000147 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Effect of small potassium-rich dykes on regional gamma-spectrometry image of a potassium-poor volcanic complex: A case from the Doupovské hory Volcanic Complex, NW Czech Republic
Original language description
The K-anomaly exceeding 2 atomic wt.% over an area of 2x6 km was defined by airborne gamma-spectrometry above the central part of the DHVC. The detailed field study, supported by field and laboratory gamma-spectrometry and geochemical analyses resulted in discovery of a K-rich trachytic dyke-swarm. The existence of differentiated rocks in the DHVC was unknown till present. These dykes are commonly less than 1 m wide, but their K content varies 4-8 atomic wt.%. Owing to this high-K composition and relative abundance of dykes, the dykes significantly modify the regional pattern of gamma-spectrometry data. The K-anomaly cannot be explained by the presence of Flurbühl intrusion dominated by ijolites and essexites, as all these rocks are poor in K, typically not exceeding 1.5 wt.%. On the other hand, much more extensive trachybasaltic lavas with K content varying within the range 1.8?3 wt.% cause only minor or undetectable anomalies.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Result continuities
Project
<a href="/en/project/IAA300460602" target="_blank" >IAA300460602: Upper-crustal model of the Ohře Rift and its vicinity.</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Volcanology and Geothermal Research
ISSN
0377-0273
e-ISSN
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Volume of the periodical
187
Issue of the periodical within the volume
1-2
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
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UT code for WoS article
000271540400003
EID of the result in the Scopus database
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