Evolution of the Lycian Allochthon, western Turkey, as a north-facing Late Palaeozoic to Mesozoic rift and passive continental margin

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dc.contributor.authorCollins, A.S.
dc.contributor.authorRobertson, A.H.F.
dc.contributor.conferenceInternational Turkish Geology Symposium (31 Aug 1998 - 4 Sep 1998 : Ankara, TURKEY)
dc.date.issued1999
dc.descriptionSpecial Issue: Advances in Turkish Geology, Part I
dc.description.abstractRegional tectono-stratigraphic analysis allows widely distributed outcrops of mainly Mesozoic sedimentary rocks within the Lycian Allochthon, SW Turkey, to be correlated and placed within four regionally developed thrust sheets, the Karadag Thrust Sheet (lowest), the Teke Dere Thrust Sheet, the Koycegiz Thrust Sheet (highest), and the Yavuz Thrust Sheet. The Karadag Thrust Sheet records Late Carboniferous, Lower and Upper Permian continental shelf/ lagoonal deposition. The overlying Teke Dere Thrust Sheet includes a rift succession of Late Permian age that was subaerially exposed during much of the Triassic; a marine transgression followed in the Early Jurassic succeeded by subsidence that formed a continental slope from Middle Jurassic to Palaeocene times. The overlying Koycegiz Thrust Sheet records Upper Triassic oceanic crust (along a rifted margin), overlain by a Lower Jurassic carbonate platform; this then subsided to form a continental slope that survived until Late Cretaceous times. The Lycian Allochthon is restored as a north-facing Mesozoic rift and passive margin taking account of structural evidence indicating southward thrust emplacement and comparisons of sedimentary successions. Mainly deep-water sediments of Triassic to Late Cretaceous age, preserved as blocks within melange units above the Lycian Thrust Sheets (Layered Tectonic Melange and Ophiolitic Melange), are interpreted as deep-water sediments deposited on Mesozoic (Neotethyan) oceanic crust. Subduction of the ocean basin proceeded from north to south, beginning with accretion of oceanic-derived melange and disrupted thrust sheets. Debris was shed into a continentward-migrating flexural foredeep, initially located along the distal edge of the continental margin in Campanian-Maastrichtian times; this foredeep then propagated southwards in stages over more proximal continental crust (including an intra-platform basin). The first main stage of southeastward propagation was in Palaeocene and Eocene times followed by a second stage in Oligocene-Miocene times. The Lycian Allochthon was finally emplaced over the most proximal (southeasterly) foredeep (i.e. the Kas basin) in Late Miocene time.
dc.description.statementofresponsibilityAlan S. Collins and Alastair H. F. Robertson
dc.identifier.citationGeological Journal, 1999, vol.34, iss.1-2, pp.107-138
dc.identifier.doi10.1002/(SICI)1099-1034(199901/06)34:1/2<107::AID-GJ817>3.0.CO;2-L
dc.identifier.issn0072-1050
dc.identifier.issn1099-1034
dc.identifier.orcidCollins, A.S. [0000-0002-3408-5474]
dc.identifier.urihttp://hdl.handle.net/2440/103874
dc.language.isoen
dc.publisherWiley
dc.rightsCopyright © 1999 John Wiley & Sons, Ltd.
dc.source.urihttps://doi.org/10.1002/(sici)1099-1034(199901/06)34:1/2%3C107::aid-gj817%3E3.0.co;2-l
dc.subjectNeotethys; rift; passive margin; Lycian Thrust Sheets; thrust emplacement
dc.titleEvolution of the Lycian Allochthon, western Turkey, as a north-facing Late Palaeozoic to Mesozoic rift and passive continental margin
dc.typeConference paper
pubs.publication-statusPublished

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