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Two distinct age groups of melilitites, foidites, and basanites from the southern Central European Volcanic Province reflect lithospheric heterogeneity

Binder, Thomas ; Marks, Michael A. W.; Gerdes, Axel; Walter, Benjamin F. 1; Grimmer, Jens ORCID iD icon 1; Beranoaguirre, Aratz 1; Wenzel, Thomas; Markl, Gregor
1 Institut für Angewandte Geowissenschaften (AGW), Karlsruher Institut für Technologie (KIT)

Abstract:

Petrographic observations and in situ U–Pb ages of melilitites, foidites, basanites, phonolites, and trachytes from the southern part of the Central European Volcanic Province (CEVP) and related plutonic inclusions therein reveal two distinct age groups separated by a gap of ~ 20 Myr. A late Cretaceous to early Eocene group (~ 73–47 Ma; Taunus, Lower Main plain, Odenwald and Kraichgau area, Bonndorfer Graben and Freiburger Bucht area, Vosges and Pfälzerwald) is characterized by nephelinites and basanites mostly devoid of melilite and perovskite, and by rare haüynites, and trachytes. In contrast, a late Oligocene to late Miocene group (~ 27–9 Ma; Lorraine, southern Upper Rhine Graben, Urach, Hegau area) is dominated by melilitites, melilite-bearing nephelinites (both carrying perovskite), and phonolites. Both magmatic episodes are related to domal topographic uplift, erosion, and formation of major angular unconformities in the Upper Rhine Graben, suggesting an association with dynamic topography interrupted by phases of subsidence (or abatements of uplift). The investigated rocks in the southern CEVP (south of a line Eifel–Vogelsberg–Rhön–Heldburg), except for the Kaiserstuhl volcanic complex, mostly comprise small and isolated occurrences or monogenetic volcanic fields, whereas the northern CEVP is dominated by large volcanic complexes and dyke swarms, which are mostly SiO$_2$-saturated to weakly SiO$_2$-undersaturated. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000153489
Veröffentlicht am 05.12.2022
Originalveröffentlichung
DOI: 10.1007/s00531-022-02278-y
Scopus
Zitationen: 3
Web of Science
Zitationen: 2
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1437-3254, 1437-3262
KITopen-ID: 1000153489
HGF-Programm 38.04.04 (POF IV, LK 01) Geoenergy
Erschienen in International Journal of Earth Sciences
Verlag Springer Verlag
Band 112
Heft 3
Seiten 881–905
Vorab online veröffentlicht am 04.12.2022
Schlagwörter In situ U–Pb dating, Central European Volcanic Province, Upper Rhine Graben, Foidites, Olivine melilitites, Geochronology of volcanic rocks
Nachgewiesen in Dimensions
Web of Science
Scopus
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