Provenance of the Lunz Formation (Carnian) in the Western Carpathians, Slovakia: Heavy mineral study and in situ LA-ICP-MS U-Pb detrital zircon dating

doi:10.1016/j.palaeo.2017.02.004

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	Provenance of the Lunz Formation (Carnian) in the Western Carpathians, Slovakia: Heavy mineral study and in situ LA-ICP-MS U-Pb detrital zircon dating
	Aubrecht, R.1,2; Sykora, M.1; Uher, P.3; Li, X. -H.4; Yang, Y. -H.4; Putis, M.3; Plasienka, D.1
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2017-04-01
卷号	471 页码:233-253
关键词	Heavy Minerals Tourmaline Garnet Cr-spinel Zircon La-icp-ms Zircon Dating Provenance Study Lunz Formation Western Carpathians
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2017.02.004
文献子类	Article
英文摘要	The Middle Carnian Julian) detritic sediments of the Lunz Formation were deposited during of the so-called Carnian Pluvial Event. They are the only siliciclastic sediments embedded in purely carbonatic formations. The paper brings the first provenance analysis of this formation from the Western Carpathians (Slovakia), where it occurs in the Hronic, Fatric and Veporic zones. Sandstones of the Lunz Formation belong to feldspatic greywackes and less to lithic greywackes. Modal analyses indicate that the sand material was derived from dissected arc and less from a recycled orogen. The heavy mineral assemblage is dominated by zircon and by apatite, slightly lesser amount of garnet, Cr-spinels and tourmaline. Analysis of tourmalines (schorl and dravite) shows their primary provenance mainly from the metapelites and metapsammites coexisting, or not coexisting with an Al-saturating phase; some were also derived from Fe3+-rich quartz-tourmaline rocks, calc-silicate rocks and metapelites, and a slightly smaller group of grains was derived from Li-poor granitoid rocks and their associated pegmatites and aplites. Most of the garnet grains belong to almandine, less to spessartine. All of them have a wide spectrum of potential primary source rocks from low- to medium-grade metamorphic rocks and magmatites. The analysed spinel grains (Cr-rich spinel, chromite and magnesiochromite) match mostly the podiform chromitites, harzburgite and cumulate fields or supra-subduction zone peridotites field, whereas Al-depleted spinel best match the arc volcanic field. Some spinels were affected by alteration or metamorphism. The in-situ LA-ICP-MS isotopic U-Pb dating shows a wide age interval of detrital zircon crystals in the Lunz Formation. Concordant zircon data show a wide interval of Late Triassic (Carnian) to Early Proterozoic ages (similar to 230-2500 Ma). Majority of zircons shows Paleozoic (pre-Variscan and Variscan) ages, whereas Neoproterozoic to Paleoproterozoic age populations are relatively scarce. Age populations and chemical composition of zircon reveal their dominant primary provenance from various suites of magmatic rocks, including Variscan granitic rocks and pre-Variscan metaigneous lithologies. Characteristic is big scatter in zircon ages and the dominance of ultrastable minerals, as zircon, tourmaline, rutile and Cr-spinels, and quite a good correlation between zircons and Cr-spinels. This indicates that most of the heavy minerals were not directly derived from some distinct primary magmatic or metamorphic sources, but as recycled particles from older sediments, or metasediments. In the context with the previously published palaeogeographic reconstructions, the provenance analysis indicates that the source area was most likely situated outside the Alpine-Carpathian shelf. They are most likely related to the coeval, mostly fluvial Stuttgart Formation in the Central European Basin (Germanic Triassic Basin). (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词	TRACE-ELEMENT GEOCHEMISTRY ; PETROGENETIC INDICATOR ; MELT INCLUSIONS ; IGNEOUS ZIRCON ; CR-SPINEL ; ROCKS ; EVOLUTION ; HF ; CHEMISTRY ; GRANITOIDS
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000396948600019
资助机构	(APVV-0212-12) ; (APVV-14-0118) ; (APVV-0081-10) ; (APVV-15-0050) ; (VEGA-1/0079/15) ; (APVV-0212-12) ; (APVV-14-0118) ; (APVV-0081-10) ; (APVV-15-0050) ; (VEGA-1/0079/15) ; (APVV-0212-12) ; (APVV-14-0118) ; (APVV-0081-10) ; (APVV-15-0050) ; (VEGA-1/0079/15) ; (APVV-0212-12) ; (APVV-14-0118) ; (APVV-0081-10) ; (APVV-15-0050) ; (VEGA-1/0079/15)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/52979]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Aubrecht, R.
作者单位	1.Comenius Univ, Fac Nat Sci, Dept Geol & Paleontol, Ilkovieova 6, Bratislava 84215, Slovakia 2.Slovak Acad Sci, Inst Earth Sci, Div Geophys, Dabrayska Cesta 9, Bratislava 84528, Slovakia 3.Comenius Univ, Fac Nat Sci, Dept Mineral & Petr, Ilkovicova 6, Bratislava 84215, Slovakia 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Aubrecht, R.,Sykora, M.,Uher, P.,et al. Provenance of the Lunz Formation (Carnian) in the Western Carpathians, Slovakia: Heavy mineral study and in situ LA-ICP-MS U-Pb detrital zircon dating[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2017,471:233-253.
APA	Aubrecht, R..,Sykora, M..,Uher, P..,Li, X. -H..,Yang, Y. -H..,...&Plasienka, D..(2017).Provenance of the Lunz Formation (Carnian) in the Western Carpathians, Slovakia: Heavy mineral study and in situ LA-ICP-MS U-Pb detrital zircon dating.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,471,233-253.
MLA	Aubrecht, R.,et al."Provenance of the Lunz Formation (Carnian) in the Western Carpathians, Slovakia: Heavy mineral study and in situ LA-ICP-MS U-Pb detrital zircon dating".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 471(2017):233-253.