Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

Geological Magazine

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (15) Citing Articles via Google Scholar Google Scholar Articles by DEAN, W. T. Articles by BULTYNCK, P. Search for Related Content GeoRef GeoRef Citation

Lower Palaeozoic stratigraphy and palaeontology, Karadere–Zirze area, Pontus Mountains, northern Turkey

W. T. DEAN^*, O. MONOD, R. B. RICKARDS, OSMAN DEMIR and P. BULTYNCK^¶

^* Department of Earth Sciences, University of Wales, Cardiff CF1 3YE, UK; and Department of Geology, National Museum of Wales, Cathays Park, Cardiff CF1 3NP, UK
Laboratoire de Géologie Structurale, UMR-CNRS 6530, Université d’Orléans, B.P.6759, 45067 Orléans Cedex 2, France
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK
Turkish Petroleum Corporation, 06520 Ankara, Turkey
^¶ Département de Paléontologie, Institut royal des Sciences naturelles de Belgique, Rue Vautier 29, B-1040 Brussels, Belgium

Lower Palaeozoic rocks in the Karadere-Zirze area, east of Safranbolu (Pontides, northern Turkey), range from Early Ordovician to Silurian. Overlying the probably Tremadoc Bakacak Formation are Aydos Formation quartzites, followed conformably by the Karadere Formation, dated as Early Arenig to Early Llanvirn by means of graptolites which are assigned to seventeen genera and include three new forms: Eoglyptograptus bouceki, Prolasiograptus haplus praecursor and Undulograptus? mui. Late Arenig trilobites from the Karadere Formation include Bergamia, Cyclopyge, Dionidella?, Leioshumardia and Seleneceme. In the Limestone Member of the overlying Ketencikdere Formation, uncommon trilobites suggest only a mid- to late Ordovician age, but con-odonts with Colour Alteration Index 5–6 indicate the Amorphognathus tvaerensis Biozone (early Caradoc). Macrofossils are rare in the Siltstone Member, but conodonts from the middle of the unit suggest the highest subzone of the A. tvaerensis Biozone; the youngest visible strata are, on acritarch evidence, at least as high as Caradoc, but the Ashgill is not confirmed and the contact with overlying Silurian rocks is unexposed. The Findikli Formation comprises: a Lower Member, black argillites with Llandovery graptolites and acritarchs; and an Upper Member, grey shales with late Wenlock graptolites, overlain unconformably by Devonian rocks. The succession differs significantly from contemporaneous deposits in southern Turkey and its affinities lie with western Europe, including the Welsh Basin.

This article has been cited by other articles:

				M. S. Oczlon, A. Seghedi, and C. W. Carrigan Avalonian and Baltican terranes in the Moesian Platform (southern Europe, Romania, and Bulgaria) in the context of Caledonian terranes along the southwestern margin of the East European craton Geological Society of America Special Papers, January 1, 2007; 423(0): 375 - 400. [Abstract] [Full Text] [PDF]

				S. Yanev, M. C. Goncuoglu, I. Gedik, I. Lakova, I. Boncheva, V. Sachanski, C. Okuyucu, N. Ozgul, E. Timur, Y. Maliakov, et al. Stratigraphy, correlations and palaeogeography of Palaeozoic terranes of Bulgaria and NW Turkey: a review of recent data Geological Society, London, Special Publications, January 1, 2006; 260(1): 51 - 67. [Abstract] [PDF]

				J. A. Winchester, T. C. Pharaoh, J. Verniers, D. Ioane, and A. Seghedi Palaeozoic accretion of Gondwana-derived terranes to the East European Craton: recognition of detached terrane fragments dispersed after collision with promontories Geological Society, London, Memoirs, January 1, 2006; 32(1): 323 - 332. [Abstract] [PDF]

				A. I. Okay, M. Satir, and W. Siebel Pre-Alpide Palaeozoic and Mesozoic orogenic events in the Eastern Mediterranean region Geological Society, London, Memoirs, January 1, 2006; 32(1): 389 - 405. [Abstract] [PDF]

				A. Saintot, R. A. Stephenson, S. Stovba, M.-F. Brunet, T. Yegorova, and V. Starostenko The evolution of the southern margin of Eastern Europe (Eastern European and Scythian platforms) from the Latest Precambrian- Early Palaeozoic to the Early Cretaceous Geological Society, London, Memoirs, January 1, 2006; 32(1): 481 - 505. [Abstract] [PDF]

				L. R. M. Cocks, L.R.M. Cocks, and T.H. Torsvik Earth geography from 500 to 400 million years ago: a faunal and palaeomagnetic review Journal of the Geological Society, December 1, 2002; 159(6): 631 - 644. [Abstract] [Full Text] [PDF]

				J. A. Winchester, T. C. Pharaoh, and J. Verniers Palaeozoic amalgamation of Central Europe: an introduction and synthesis of new results from recent geological and geophysical investigations Geological Society, London, Special Publications, January 1, 2002; 201(1): 1 - 18. [Abstract] [PDF]

				S. T. Turvey Phylogeny of the Reedocalymeninae (Trilobita): implications for Early Ordovician biogeography of Gondwana Geological Society, London, Special Publications, January 1, 2002; 194(1): 53 - 68. [Abstract] [PDF]