气候变化领域集成服务门户(CCPortal): Traces of Carnian volcanic activity in the Transdanubian Range; Hungary

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DOI	10.1007/s00531-019-01714-w
	Traces of Carnian volcanic activity in the Transdanubian Range; Hungary
	Dunkl I.; Farics É.; Józsa S.; Lukács R.; Haas J.; Budai T.
发表日期	2019
ISSN	14373254
起始页码	1451
结束页码	1466
卷号	108 期号:5
英文摘要	The South Alpine–Dinaridic realm was affected by igneous activity in the Middle Triassic; the marine carbonate platforms and the adjacent basins contain highly variable intrusive-volcanic assemblages. We studied the petrography and determined the zircon U–Pb ages of the Triassic volcanic products in the Transdanubian Range. The geochemical features and thus the geodynamic context of the magmatism are badly known, as the rocks experienced variable chemical alteration. The exact duration of the igneous activity is also poorly constrained, as the geochronological data of the former studies were obtained mostly by the weathering-sensitive K–Ar and Rb–Sr methods and thus some data even being younger than the age of the stratigraphic cover. The presence of andesite dikes and of pebbles and cobbles (< 20 cm) of basalt, andesite, rhyolite and of rhyolitic tuff in the Triassic carbonate platform deposits indicates that within the Transdanubian Range formed a volcanic complex in Triassic. The major mineralogical and geochemical features of the Transdanubian igneous suite are similar to the Triassic formations in the Southern Alps. However, dissimilar zircon composition excludes the immediate relationship of the zircon-bearing silicic formations in the two tectonic units. New U–Pb ages show that the beginning of the volcanic activity is probably coeval with the eruption of the widespread “pietra verde” trachytic tuffs in the Upper Anisian–Ladinian successions, but the majority of the ages are younger than those ash layers. The new age constraints give a bench-mark for the termination of the volcanic activity in Carnian time in the Transdanubian Range. © 2019, The Author(s).
英文关键词	Southern Alps; Transdanubian Range; Triassic; U–Pb geochronology; Volcanism
语种	英语
scopus关键词	carbonate platform; Carnian; geochronology; petrography; uranium-lead dating; volcanism; zircon; Hungary; New Zealand; South Island; Southern Alps; Transdanubian Mountains
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147829
作者单位	Department of Sedimentology and Environmental Geology, Geoscience Center, University of Göttingen, Göttingen, Germany; Department of Geology and Meteorology, University of Pécs, Pécs, Hungary; Department of Petrology and Geochemistry, Eötvös Loránd University, Budapest, Hungary; MTA-ELTE Volcanology Research Group, Budapest, Hungary; MTA-ELTE Geological, Geophysical and Space Science Research Group, Budapest, Hungary
推荐引用方式 GB/T 7714	Dunkl I.,Farics É.,Józsa S.,et al. Traces of Carnian volcanic activity in the Transdanubian Range; Hungary[J],2019,108(5).
APA	Dunkl I.,Farics É.,Józsa S.,Lukács R.,Haas J.,&Budai T..(2019).Traces of Carnian volcanic activity in the Transdanubian Range; Hungary.International Journal of Earth Sciences,108(5).
MLA	Dunkl I.,et al."Traces of Carnian volcanic activity in the Transdanubian Range; Hungary".International Journal of Earth Sciences 108.5(2019).