Tectonic-Sedimentary Evolution of the North Tethyan Margin in the Central Pontides of Northern Turkey
Published:January 01, 1997
Timur Ustaömer, Alastair Robertson, 1997. "Tectonic-Sedimentary Evolution of the North Tethyan Margin in the Central Pontides of Northern Turkey", Regional and Petroleum Geology of the Black Sea and Surrounding Region, A. G. Robinson
Download citation file:
The Central Pontides of northern Turkey is one of the best exposed seg-ments of the southern margin of Eurasia adjacent to the Tethys Ocean, at least from the Paleozoic onward, and its history can be taken as a guide to the tec-tonic evolution of the Pontides as a whole. A number of east-west-trending tectonic units record subduction-accretion and the growth of the south Eurasian margin. The Central Pontides also document Lower Cretaceous lithospheric extension related to opening of the Black Sea during the Late Mesozoic-Early Tertiary and a later active margin and collisional history.
Three time intervals exemplify the...
Figures & Tables
Regional and Petroleum Geology of the Black Sea and Surrounding Region
In 1967 and 1969, two oceanographic cruises were made in the Black Sea under the guidance of the Woods Hole Oceanographic Institute: The cruises included scientists from many countries and disciplines. Their aims were to determine the recent geological and geochemical evolution of the Black Sea, to map the shallow structure of the basin, and to study the interaction between the oxidized surface waters and the anoxic waters beneath them. The results were published 23 years ago, as AAPG Memoir 20 (Ross and Degens, 1974). During the 1969 cruise, the vessel Atlantis II collected 40 piston cores, which formed the basis of most of the subsequent geological studies that were restricted to very recent sedimentation. Speculations concerning the origin of the basin and the relationship of the geology offshore to that exposed around the margins of the Black Sea were rooted in pre-plate tectonic concepts of basin formation and were in any case hampered by a lack of relevant data (Brinkmann, 1974).
In 1976, the Glomar Challenger visited the Black Sea on Leg 42B of the Deep Sea Drilling Project and drilled and cored three deep-water sites (379, 380, and 381). Well 381 north of the Bosporus encountered sediments as old as Miocene, including some apparently deposited in shallow water (Ross, 1978).
The next major volume in Western literature to deal with the Black Sea was published a decade later, collecting papers presented two years earlier at a conference in Yalta. In this volume, a number of seismic reflection lines