Origin and Age Determination of the Neotethys Meliata Basin Ophiolite Fragments in the Late Jurassic-Early Cretaceous Accretionary Wedge Melange (Inner Western Carpathians, Slovakia)
文献类型：期刊论文
| 作者 | Putis, Marian1; Sotak, Jan5; Li, Qiu-Li2; Ondrejka, Martin1; Li, Xian-Hua2; Hu, Zhaochu3; Ling, Xiaoxiao2; Nemec, Ondrej1; Nemeth, Zoltan4; Ruzicka, Peter1 |
| 刊名 | MINERALS
 |
| 出版日期 | 2019-11-01 |
| 卷号 | 9期号:11页码:38 |
| 关键词 | Neotethys Meliatic accretionary wedge melange Inner Western Carpathians lithostratigraphy petrography geochemistry geochronology |
| DOI | 10.3390/min9110652 |
| 英文摘要 | This study reports the Neotethyan Meliata Basin ophiolite fragments in the Late Jurassic-Early Cretaceous accretionary wedge melange in the southern part of the Inner Western Carpathians (IWC). Here we present new lithostratigraphical, petrographical, geochemical, and geochronological data obtained from the melange blocks used to reconstruct the Meliaticum paleotectonic zones in a tentative evolutionary model of this accretionary wedge. The Dobina melange block continental margin carbonatic and siliciclastic sediments have calc-alkaline basalt intercalations. The basalt Concordia age dated to 245.5 +/- 3.3 Ma by U-Pb SIMS on zircon most likely indicates the pre-oceanic advanced early Middle Triassic continental rifting stage. The evolving marginal oceanic crust is composed of Middle to Upper Triassic cherty shales to radiolarites. The detrital zircon U-Pb SIMS Concordia ages of 247 +/- 4 Ma and 243 +/- 4 Ma from a cherty shale, and the xenocryst zircon population Concordia age of 266 +/- 3 Ma from a 0.5 m thick "normal" mid-ocean ridge (N-MOR) basalt layer in this cherty shale reveal the connection of the oceanic basin to the adjacent rifting continental margin. The chertified reddish limestone transition to radiolarite indicates syn-rift basin deepening. Upwards, regular alternating N-MOR basalts and radiolarites are often disturbed by peperite breccia horizons. The Nd isotope values of these basalts (epsilon Nd-240 = 7-8) are consistent with their chondrite normalized rare earth element (REE) patterns and indicate a depleted mantle source. The Triassic ophiolitic suite also comprises rare ocean island (OI) basalts (epsilon Nd-240 = 5) and serpentinized subduction unrelated peridotites. The Middle to Late Jurassic shortening and southward intra-oceanic and continental margin subduction at approximately 170-150 Ma enhanced the formation of the trench-like Jurassic flysch succession which preceded the closure of the Meliata Basin. The flysch sediments form a melange matrix of olistolithic unsubducted, obducted, and MP-HP/LT metamorphosed exhumed blocks of the Triassic to Lower Jurassic successions. Blocks of peridotites, rodingites, blueschists, greenschists, rare amphibolites, deep-water shaly sediments and shallow- to deep-water carbonates are typical members of the melange. The Meliatic accretionary wedge melange nappe outliers were incorporated in the IWC orogenic wedge in the late Early Cretaceous according to metamorphic rutile U-Pb SIMS ages of 100 +/- 10 Ma determined from a Jaklovce metabasalt. |
| WOS关键词 | U-PB ; TECTONOTHERMAL EVOLUTION ; MANTLE PERIDOTITES ; ZIRCON ; ROCKS ; UNIT ; OCEAN ; HF ; CLASSIFICATION ; MIDDLE |
| 资助项目 | National Key Research and Development Program of China[2016YFE0203000] ; Slovak Research and Development Agency[APVV-15-0050] ; Slovak Research and Development Agency[APVV-17-0017] ; VEGA Agency[2/0034/16] ; VEGA Agency[1/0151/19] |
| WOS研究方向 | Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000502267100005 |
| 出版者 | MDPI |
| 资助机构 | National Key Research and Development Program of China ; National Key Research and Development Program of China ; Slovak Research and Development Agency ; Slovak Research and Development Agency ; VEGA Agency ; VEGA Agency ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Slovak Research and Development Agency ; Slovak Research and Development Agency ; VEGA Agency ; VEGA Agency ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Slovak Research and Development Agency ; Slovak Research and Development Agency ; VEGA Agency ; VEGA Agency ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Slovak Research and Development Agency ; Slovak Research and Development Agency ; VEGA Agency ; VEGA Agency |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95826]  |
| 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 | Putis, Marian |
| 作者单位 | 1.Comenius Univ, Fac Nat Sci, Dept Mineral & Petrol, Bratislava 84215, Slovakia 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China 4.State Geol Inst Dionyz Stur, Bratislava 81704, Slovakia 5.Slovak Acad Sci, Earth Sci Inst, Banska Bystrica 97411, Slovakia |
| 推荐引用方式 GB/T 7714 | Putis, Marian,Sotak, Jan,Li, Qiu-Li,et al. Origin and Age Determination of the Neotethys Meliata Basin Ophiolite Fragments in the Late Jurassic-Early Cretaceous Accretionary Wedge Melange (Inner Western Carpathians, Slovakia)[J]. MINERALS,2019,9(11):38. |
| APA | Putis, Marian.,Sotak, Jan.,Li, Qiu-Li.,Ondrejka, Martin.,Li, Xian-Hua.,...&Ruzicka, Peter.(2019).Origin and Age Determination of the Neotethys Meliata Basin Ophiolite Fragments in the Late Jurassic-Early Cretaceous Accretionary Wedge Melange (Inner Western Carpathians, Slovakia).MINERALS,9(11),38. |
| MLA | Putis, Marian,et al."Origin and Age Determination of the Neotethys Meliata Basin Ophiolite Fragments in the Late Jurassic-Early Cretaceous Accretionary Wedge Melange (Inner Western Carpathians, Slovakia)".MINERALS 9.11(2019):38. |
入库方式： OAI收割
来源：地质与地球物理研究所
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