論文

2018年4月

The Jurassic Hallstatt Mélange of the Inner Dinarides (SW Serbia): implications for Triassic-Jurassic geodynamic and palaeogeographic reconstructions of the Western Tethyan realm

Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen
  • Hans Jürgen Gawlick
  • ,
  • Sigrid Missoni
  • ,
  • Milan N. Sudar
  • ,
  • Hisashi Suzuki
  • ,
  • Štefan Méres
  • ,
  • Richard Lein
  • ,
  • Divna Jovanovic

288
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開始ページ
1
終了ページ
47
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1127/njgpa/2018/0721

© 2018 E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Germany. The late Middle to early Late Jurassic Hallstatt Mélange in the Inner Dinarides (SW Serbia) plays a crucial role for the reconstruction 1) of the Triassic-Jurassic passive margin configuration of the Western Neo-Tethys Ocean, and 2) of the Middle to Late Jurassic geodynamic history of the Dinarides. In the Zlatar Mountain and adjacent areas, below the Middle to early Late Jurassic ophiolitic mélange with their overlying ophiolite sheets of the Dinaridic Ophiolite nappe occur mass transport deposits and slide blocks in a radiolaritic-argillaceous matrix. The components in the mass transport deposits and slide blocks consist of Triassic to Early Jurassic carbonates to Middle Jurassic radiolarites. The matrix of these mass transport deposits and slide blocks are late Middle to early Late Jurassic radiolarites, siliceous claystones, and siliceous marls. This paper is focused on the 1) Triassic to Middle Jurassic Hallstatt facies characterisation, 2) age determination and depositional characteristics of the radiolaritic matrix, and on the 3) description of the sedimentary mélange character. The slide blocks in the newly defined Zlatar Mélange reach several tens to hundred metres in size, occasionally even kilometres. Their stratigraphy and facies evolution allowed the reconstruction of a complete sedimentary succession originating from a distal continental margin setting (Hallstatt facies zone). Deformation and accretion of the Neo-Tethys started with intra-oceanic thrusting in the late Early to early Middle Jurassic. The onset of the west-directed obduction of the accreted ophiolites onto the continental slope and outer shelf is dated as Middle Jurassic. In the Middle Jurassic contractional tectonics reached the outer parts of the shelf and affected the Hallstatt facies zone. Deep-water trench-like basins formed in sequence in front of the advancing nappes and obducted ophiolite sheets, respectively. Thick successions of gravitational redeposited sedimentary rocks accumulated in these trench-like basins. The components derived from the sedimentary sequences of the accreted outer shelf. The former Triassic to Early Jurassic passive continental margin of Adria with its huge Triassic carbonate platforms took a lower plate position in the developing thin-skinned orogen with successive westwards propagation of the nappe stack towards the inner shelf.

リンク情報
DOI
https://doi.org/10.1127/njgpa/2018/0721
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85047108161&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85047108161&origin=inward

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