Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Geochemical Characteristics Of The Eocene Karataş Volcanics (Northeast Sivas, Turkey) In The İzmir-Ankara-Erzincan Suture Zone, Oktay Canbaz, Ahmet Gökce, Taner Eki̇ci̇, Hüseyin Yilmaz
Geochemical Characteristics Of The Eocene Karataş Volcanics (Northeast Sivas, Turkey) In The İzmir-Ankara-Erzincan Suture Zone, Oktay Canbaz, Ahmet Gökce, Taner Eki̇ci̇, Hüseyin Yilmaz
Bulletin of the Mineral Research and Exploration
Karataş volcanics, is the product of Eocene volcanics crop out in the form of two belts along the northern and southern boundaries of the İzmir-Ankara-Erzincan Suture Zone. According to geochemical data, these volcanics have alkaline basic-intermediate character and consist of basaltic trachyandesite, trachyandesite and trachyte. This volcanic activity has been controlled by fractional crystallization and crustal contamination from basaltic trachyandesite to trachyte. Orientation of the samples towards amphibole area on the Rb/Sr - Ba/Rb ratio diagrams, dispersion of the Zr/Ba ratios (0.08 - 0.33) in the lithospheric mantle range, increase in the Ba/Rb ratio, decreases in the MgO, Ni and …
Eocene-Oligocene Succession At Kıyıköy (Midye) On The Black Sea Coast In Thrace, Aral I. Okay, Michael D. Simmons, Ercan Özcan, Stephen Starkie, Michael D. Bidgood, Andrew R.C. Kylander-Clark
Eocene-Oligocene Succession At Kıyıköy (Midye) On The Black Sea Coast In Thrace, Aral I. Okay, Michael D. Simmons, Ercan Özcan, Stephen Starkie, Michael D. Bidgood, Andrew R.C. Kylander-Clark
Turkish Journal of Earth Sciences
A belt of Upper Eocene-Lower Oligocene marine sedimentary rocks extends from Kıyıköy on the Black Sea coast to Pınarhisar in the Thrace Basin, suggesting a marine connection between the Black Sea and the Thrace Basin during this period. The Cenozoic succession of this marine corridor was studied in the vicinity of Kıyıköy along two measured stratigraphic sections. The sequence lies unconformably over metamorphic basement rocks and consists of ~75 m of bioclastic limestone and sandstone of the Soğucak Formation, overlain by ~40 m of limestone, marl, mudstone, sandstone, and acidic tuff, which are assigned to the newly defined Servez Formation. …
Late Eocene To Early Oligocene Palynostratigraphy Of The Western Black Sea, Easternparatethys, Recep Hayretti̇n Sancay, Zühtü Bati
Late Eocene To Early Oligocene Palynostratigraphy Of The Western Black Sea, Easternparatethys, Recep Hayretti̇n Sancay, Zühtü Bati
Turkish Journal of Earth Sciences
The Eastern Thrace and Western Black Sea basins provide unique perspectives on the palaeogeographic reconstructions of the Paratethys. Although very thick and extensive Oligocene outcrops and well sections exist in the Thrace Basin, only a few comparable sections are available in the Black Sea onshore areas. In this study, five measured stratigraphic sections of Eocene to Oligocene age from the margins of the Western Black Sea were studied and palynomorph assemblages were identified quantitatively. Index dinoflagellate cyst events and a palynological biozonation as established in the Mediterranean were applied successfully. Priabonian units contain the Aal biozone, whereas Rupelian successions were …
The Ypresian To Lutetian Marine Record In Nw Turkey: A Revised Biostratigraphy Andchronostratigraphy And Implications For Eocene Paleogeography, Ercan Özcan, Zahi̇de Özcan, Aral I. Okay, Kenan Akbayram, Aynur Hakyemez
The Ypresian To Lutetian Marine Record In Nw Turkey: A Revised Biostratigraphy Andchronostratigraphy And Implications For Eocene Paleogeography, Ercan Özcan, Zahi̇de Özcan, Aral I. Okay, Kenan Akbayram, Aynur Hakyemez
Turkish Journal of Earth Sciences
The Eocene sedimentary units in the Kocaeli and Armutlu peninsulas and İznik-Geyve region (northwest Turkey) consist of marine siliciclastic and carbonate deposits, locally intercalated with volcaniclastic rocks and tuffs (Middle Eocene Magmatic Rocks-MEMR). The record of larger benthic fauna (LBF) and pelagic microfossils, such as planktonic foraminifera and calcareous nannoplankton, combined with lithological description, indicate a wide spectrum of depositional environments ranging from shallowto deep-marine. These deposits contain in situ and/or allochthonous assemblages of orthophragminids, nummulitids, subordinate rotaliids, and sparse alveolinids. The in situ assemblages (mainly orthophragminids) point to several episodes of shallow marine depositional conditions during a) early Ypresian …