气候变化领域集成服务门户(CCPortal): An andesitic sill complex in the Southern Permian Basin: volcanogenetic model and stratigraphic implications

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DOI	10.1007/s00531-020-01911-y
	An andesitic sill complex in the Southern Permian Basin: volcanogenetic model and stratigraphic implications
	Luthardt L.; Breitkreuz C.; Schneider J.W.; Gaitzsch B.; Brink J.; Stanek K.P.; Linnemann U.; Hofmann M.; Ehling B.-C.
发表日期	2020
ISSN	14373254
起始页码	2447
结束页码	2466
卷号	109 期号:7
英文摘要	Subvolcanic intrusions are highly variable in shape and structure, and occur in nearly all parts of the upper crust, as a result of extensive volcanic activity. Processes of subvolcanics interacting with the host rock are insufficiently understood, as they are rarely exposed. In the southernmost part of the Flechtingen-Altmark Subprovince, (sub)volcanic rocks of the Flechtingen Volcanic Complex (FVC) are exposed in several quarries. It is built up of silicic tuffs, ignimbrites and lava flows, but also of intermediate lavas and extended sill sheets. Additionally, major granitic intrusions exposed by drillings are associated with the FVC. In the Mammendorf quarry, a sill intruded in between lithified turbiditic series of early Carboniferous (Visean–Serphukovian) age at the base, and widely consolidated volcanoclastic deposits of late Carboniferous (late Pennsylvanian) age at the top. Various magma-host rock interactions were found indicating brittle and ductile deformation patterns occurring at the basal contact, and secondary fluidal mixing predominantly occurring at the top contact, most probably caused by fluids accompanying the intruding magma. We present an extended volcanogenetic model for the FVC. Volcanic activity initiated at 302 ± 3 Ma with fallout deposits represented by mostly re-deposited silicic ashfall deposits of the Flechtingen Formation, and cumulated in depositing major ignimbrite series, most likely forming a caldera. Later, the sills intruded at the rheological boundary of the lithified Mississippian turbiditic series and the partly consolidated volcanoclastic series. Finally, major granitic intrusions emplaced in the basement rocks at around 298 ± 4 Ma. The study contributes to clarify stratigraphic constraints of late Carboniferous to early Permian continental deposits and sheds light on stratigraphy of significant late Paleozoic volcanic deposits of the Flechtingen-Altmark Subprovince in the Southern Permian Basin. © 2020, Geologische Vereinigung e.V. (GV).
英文关键词	Andesite; Caldera; Late Paleozoic volcanism; Peperite; Sill; Southern Permian Basin
语种	英语
scopus关键词	andesite; caldera; host rock; peperite; Permian; petrogenesis; petrology; sill
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/147621
作者单位	Geological Institute, Technische Universität Bergakademie Freiberg, Bernhard-von-Cotta, Straße 2, Freiberg, 09599, Germany; Kazan Federal University, 18 Kremlevskaya Str., Kazan, 420008, Russian Federation; Oststraße 2, Freiberg, 09599, Germany; Senckenberg Naturhistorische Sammlungen Dresden, GeoPlasma Lab, Königsbrücker Landstraße, 159, Dresden, 01109, Germany; Landesamt für Geologie und Bergwesen (LAGB), Sachsen-Anhalt, Köthener Straße 38, Halle, 06118, Germany
推荐引用方式 GB/T 7714	Luthardt L.,Breitkreuz C.,Schneider J.W.,et al. An andesitic sill complex in the Southern Permian Basin: volcanogenetic model and stratigraphic implications[J],2020,109(7).
APA	Luthardt L..,Breitkreuz C..,Schneider J.W..,Gaitzsch B..,Brink J..,...&Ehling B.-C..(2020).An andesitic sill complex in the Southern Permian Basin: volcanogenetic model and stratigraphic implications.International Journal of Earth Sciences,109(7).
MLA	Luthardt L.,et al."An andesitic sill complex in the Southern Permian Basin: volcanogenetic model and stratigraphic implications".International Journal of Earth Sciences 109.7(2020).