气候变化领域集成服务门户(CCPortal): Triassic evolution of the western Neotethys: constraints from microfabrics and U–Pb detrital zircon ages of the Plattenkalk Unit (External Hellenides; Greece)

CCPortal

DOI	10.1007/s00531-019-01773-z
	Triassic evolution of the western Neotethys: constraints from microfabrics and U–Pb detrital zircon ages of the Plattenkalk Unit (External Hellenides; Greece)
	Zulauf G.; Dörr W.; Xypolias P.; Gerdes A.; Kowalczyk G.; Linckens J.
发表日期	2019
ISSN	14373254
起始页码	2493
结束页码	2529
卷号	108 期号:8
英文摘要	The Plattenkalk Unit forms the structurally deepest nappe of the External Hellenides and plays a key role for the reconstruction of Triassic paleogeography in the western Tethyan realm. To shed light on the provenance of the Plattenkalk Unit, we present microfabrics and U–Pb detrital zircon data obtained from quartzite and metaconglomerate of its basal part (Kastania and Transitional Beds exposed on the southern Peloponnesus). A Minoan-type age spectrum of detrital zircons, together with inherited deformation microfabrics of detrital components, points to a very low- to low-grade metamorphic basement as source rock that was situated along the northern passive margin of Apulia facing the Neotethys in the north. The siliciclastic rocks of the Kastania Beds reflect the late Permian/early Triassic opening of the Neotethys, whereas the Transitional Beds indicate the late Triassic facies change toward the Pantokrator-type dolomite, which is a characteristic rock of late Triassic Tethyan carbonate platforms. Dolomite and evaporites of the Trypali Unit, on the other hand, were deposited vis-à-vis along the southern passive margin of Cimmeria. This Triassic configuration of Tethyan basins fits well with the S/SW-directed transport and the recent vertical succession of the Hellenic nappes. The proposed Triassic position of the Plattenkalk basin implies that the Apulian microplate was not part of the Cimmerian block since Permian times. The separation of the Apulian microplate from Gondwana is attributed to the Jurassic breakup of Pangea resulting in the opening of the Mesogean ocean, the relics of which are undergoing subduction beneath the Aegean microplate still today. © 2019, Geologische Vereinigung e.V. (GV).
英文关键词	Apulia; External Hellenides; Minoan age spectrum; Plattenkalk Unit; Provenance analysis
语种	英语
scopus关键词	detrital deposit; metamorphic rock; microfacies; provenance; subduction; tectonic evolution; Triassic; uranium-lead dating; zircon; Greece
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/147774
作者单位	Department of Earth Sciences, Universität Frankfurt a.M., Altenhöferallee 1, Frankfurt am Main, 60438, Germany; Department of Geology, University of Patras, Patras, 26500, Greece
推荐引用方式 GB/T 7714	Zulauf G.,Dörr W.,Xypolias P.,等. Triassic evolution of the western Neotethys: constraints from microfabrics and U–Pb detrital zircon ages of the Plattenkalk Unit (External Hellenides; Greece)[J],2019,108(8).
APA	Zulauf G.,Dörr W.,Xypolias P.,Gerdes A.,Kowalczyk G.,&Linckens J..(2019).Triassic evolution of the western Neotethys: constraints from microfabrics and U–Pb detrital zircon ages of the Plattenkalk Unit (External Hellenides; Greece).International Journal of Earth Sciences,108(8).
MLA	Zulauf G.,et al."Triassic evolution of the western Neotethys: constraints from microfabrics and U–Pb detrital zircon ages of the Plattenkalk Unit (External Hellenides; Greece)".International Journal of Earth Sciences 108.8(2019).