Lead isotope evolution of the Central European upper mantle: Constraints from the Bohemian Massif
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F20%3A00524645" target="_blank" >RIV/67985831:_____/20:00524645 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/20:00115606 RIV/00216305:26110/20:PU136815
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1674987119301744" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1674987119301744</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.gsf.2019.09.009" target="_blank" >10.1016/j.gsf.2019.09.009</a>
Alternative languages
Result language
angličtina
Original language name
Lead isotope evolution of the Central European upper mantle: Constraints from the Bohemian Massif
Original language description
The Pb isotope composition of the upper mantle beneath Central Europe is heterogeneous due to the subduction of regionally contrasting material during the Variscan and Alpine orogenies. Late Variscan to Cenozoic mantlederived melts allow mapping this heterogeneity on a regional scale for the last ca. 340 Myr. Late Cretaceous and Cenozoic anorogenic magmatic rocks of the Bohemian Massif (lamprophyres, volcanic rocks of basanite/ tephrite and trachyte/phonolite series) concentrate mostly in the Eger Rift. Cretaceous ultramafic lamprophyres yielded the most radiogenic Pb isotope signatures reflecting a maximum contribution from metasomatised lithospheric mantle, whereas Tertiary alkaline lamprophyres originated from mantle with less radiogenic 206Pb/204Pb ratios suggesting a more substantial modification of lithospheric source by interaction with asthenosphericderived melts. Cenozoic volcanic rocks of the basanite/tephrite and trachyte/phonolite series define a linear mixing trend between these components, indicating dilution of the initial lithospheric mantle signature by upwelling asthenosphere during rifting. The Pb isotope composition of Late Cretaceous and Cenozoic magmatic rocks of the Bohemian Massif follows the same Pb growth curve as Variscan orogenic lamprophyres and lamproites that formed during the collision between Laurussia, Gondwana, and associated terranes. This implies that the crustal Pb signature in the post-Variscan mantle is repeatedly sampled by younger anorogenic melts. Most Cenozoic mantle-derived rocks of Central Europe show similar Pb isotope ranges as the Bohemian Massif.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/LO1408" target="_blank" >LO1408: AdMaS UP – Advanced Building Materials, Structures and Technologies</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geoscience Frontiers
ISSN
1674-9871
e-ISSN
—
Volume of the periodical
11
Issue of the periodical within the volume
3
Country of publishing house
CN - CHINA
Number of pages
18
Pages from-to
925-942
UT code for WoS article
000530750200016
EID of the result in the Scopus database
2-s2.0-85075857434