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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

  • DOI - Digital Object Identifier

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

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    DB - Geology and mineralogy

  • OECD FORD branch

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

  • 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

  • UT code for WoS article

    000271540400003

  • EID of the result in the Scopus database