Reconciling the stratigraphy and depositional history of the Lycian orogen-top basins, SW Anatolia

Terrestrial fossil records from the SWAnatolian basins are crucial both for regional correlations and palaeoenvironmental reconstructions. By reassessing biostratigraphic constraints and incorporating new fossil data, we calibrated and reconstructed the late Neogene andQuaternary palaeoenvironments within a regional palaeogeographical framework. The culmination of the Taurides inSWAnatolia was followed by a regional crustal extension from the late Tortonian onwards that created a broad array of NE-trending orogen-top basins with synchronic associations of alluvial fan, fluvial and lacustrine deposits. The terrestrial basins are superimposed on the upper Burdigalian marine units with a c. 7 myr of hiatus that corresponds to a shift from regional shortening to extension. The initial infill of these basins is documented by a transition from marginal alluvial fans and axial fluvial systems into central shallow-perennial lakes coinciding with a climatic shift from warm/humid to arid conditions. The basal alluvial fan deposits abound in fossil macro-mammals of an early Turolian (MN11–12; late Tortonian) age. The Pliocene epoch in the region was punctuated by subhumid/humid conditions resulting in a rise of local base levels and expansion of lakes as evidenced by marsh-swamp deposits containing diverse fossilmammal assemblages indicating late Ruscinian (lateMN15; late Zanclean) ageWe are grateful for the support of the international bilateral project between The Scientific and Technological Research Council of Turkey (TUBITAK) and The Russian Scientific Foundation (RFBR) with grant a number of 111Y192. M.C.A. is grateful to the Turkish Academy of Sciences (TUBA) for a GEBIP (Young Scientist Award) grant. T.K. and S.M. are grateful to the Ege University Scientific Research Center for the TTM/002/2016 and TTM/001/2016 projects. M.C.A., H.A., S.M. and M.B. have obtained Martin and Temmick Fellowships at Naturalis Biodiversity Center (Leiden). F.A.D. is supported by a Mehmet Akif Ersoy University Scientific Research Grant. T.A.N. is supported by an Alexander-von-Humboldt Scholarship. L.H.O. received support from TUBITAK under the 2221 program for visiting scientists

KALE-TAVAS VE ACIPAYAM HAVZALARINDA ERKEN MİYOSEN ÇÖKELLERİNİN MOLLUSK BİYOSTRATİGRAFİSİ (DENİZLİ, GB TÜRKİYE)

Bu çalışmada, Kale-Tavas ve Acıpayam havzalarının erken Miyosen birimleri için bir stratigrafik çatı önerilmektedir. Akitaniyen yaşlı acı su/denizel çökellerden (Yenidere formasyonu) iki, geç Burdigaliyen yaşlı sığ denizel birimlerden (Kale Formasyonu) ise üç stratigrafi k kesit incelenmiştir. İnceleme alanında Akdeniz provensindeki alanlarda bulunan topluluklara benzer, toplam 26 mollusk türü belirlenmiştir. Bulunan fauna, Akdeniz Tetisi’nin Denizli’nin güneybatısında sadece erken Miyosen sırasında hüküm sürdüğünü göstermektedir. Erken Miyosen sırasında havzayı etkileyen tektonik aktivite, denizel Tetis’in bölgedeki sınırlarını anlamak için çok önemli olabilir

MOLLUSCAN BIOSTRATIGRAPHY OF EARLY MIOCENE DEPOSITS OF THE KALE-TAVAS AND ACIPAYAM BASINS (DENIZLI, SW TURKEY)

Bu çalışmada, Kale-Tavas ve Acıpayam havzalarının erken Miyosen birimleri için bir stratigrafi k çatı önerilmektedir. Akitaniyen yaşlı acı su/denizel çökellerden (Yenidere formasyonu) iki, geç Burdigaliyen yaşlı sığ denizel birimlerden (Kale Formasyonu) ise üç stratigrafi k kesit incelenmiştir. İnceleme alanında Akdeniz provensindeki alanlarda bulunan topluluklara benzer, toplam 26 mollusk türü belirlenmiştir. Bulunan fauna, Akdeniz Tetisi’nin Denizli’nin güneybatısında sadece erken Miyosen sırasında hüküm sürdüğünü göstermektedir. Erken Miyosen sırasında havzayı etkileyen tektonik aktivite, denizel Tetis’in bölgedeki sınırlarını anlamak için çok önemli olabilir.In the present work, a stratigraphic framework of the early Miocene units of the Kale-Tavas and Acıpayam deposits is proposed. Two stratigraphic sections from the brackish-marine deposits of Aquitanian (Yenidere formation) and three sections from the shallow marine units of late Burdigalian (Kale Formation) age have been logged. In total 26 mollusc species are identifi ed similar to those of the areas in the Mediterranean province. The fauna indicates that the Mediterranean Tethys occupied the southwestern part of the Denizli region only during the early Miocene. A tectonic pulse in the basin during the early Miocene may have been very important to understand the limits of marine Tethyan infl uence in the area

Recent Marine Ostracods (Crustacea) around Hovgaard and Horseshoe Islands (Antarctica Peninsula)

On the route of the II Turkish Antarctic Expedition (TAE-II) in the NW of the continent of Antarctica, twelve grab sediment samples were been collected from seven different locations at depths of -20 and -60 m between King George and Horseshoe islands in NW Antarctica. The collected samples consist of greenish gray silty clay and fine sandy silt, as well as brownish gray sandy silty clay units containing fine gravel grains. In the Hovgaard and Horseshoe islands, six genera and six species of ostracods were identified: Copytus caligula Skogsberg, Austrotrachyleberis antarctica (Neale), Australicy there devexa (Muller), Cativella bensoni Neale, Cytheropteron acuticaudatum Hartmann and Loxoreticulatum fallax (Maller). The species are cryophilic endemic ostracods. When the fossil and current findings are compared, Austrotrachyleberis antarctica, which has been known since the Oligocene, migrated from Antarctica to South America and Cativella bensoni migrated from South America to Antarctica

Stratigraphy of the Mio-Pleistocene sequence in the Göktepe region based on the fossil record (Muğla, SW Turkey)

The sedimentary basins in SW Turkey (e.g., Kale-Tavas, Yatağan, and Ören basins) that developed after the closure of the Neotethys Ocean allow the reconstruction of the tectonic and paleogeographic history of the region. Due to the rich coal reserves, the Yatağan Basin provides a substantial amount of data to infer the paleoenvironment and paleoclimate during the middle Miocene to Pleistocene. Our work provides new paleontological and radiometric data to constrain the age, paleoclimate, and depositional environment of terrestrial deposits of this basin. We present fossil findings such as mammal bones, gastropods, and palynomorph assemblages from the base of the Turgut Formation. According to these fossils, the formation started to deposit in a brackish-freshwater lacustrine environment during the late early Miocene–early middle Miocene interval (MN4–5) under warm, subtropical climatic conditions. the brackish conditions may be explained by a marine transgression in the region. the palynological and paleontological analyses from the lignite and underlying and overlying stratigraphy in the Turgut Formation mark a freshwater environment and warmtemperate climatic conditions during the middle–late middle Miocene (MN6–7). 230Th/U dating results of the uppermost levels of the lacustrine carbonates of the Milet Formation reveal a minimum radiometric age of 346 ± 19 ka BP (middle Pleistocene). the uppermost levels of the Milet Formation overlapped the Göktepe Fault. This may imply continuous subsidence in the basin until ~346 ka

Oligocene ruminants from the Kızılırmak Formation, Çankırı-Çorum Basin, Central Anatolia, Turkey

International audienc

Fauna and flora of drilling and core data from the Iznik Lake: The Marmara and the Black Sea connection

The study deals with on the Quaternary connection of the Iznik Lake between the Gemlik Gulf and the Black Sea located in the Marmara Region. The core and drilling data were evaluated. They were collected at two locations and depths from drilling cores and at the three deepest locations of the lake. A total of 510 samples were examined from the lake-bottom cores. Ostracod, mollusc, nannoplankton, ascidian spicule, and diatom assemblages observed at different levels of the drillings were studied. No foraminiferal data were recorded. Molluscan association such as Dreissena bugensis, D. caspia, Monodacna pontica, Clathrocaspia makarovi, Euxinipyrgula milachevitchi, Euxinipyrgula lincta indicate Neoeuxinian age. Amnicythere olivia, A. stepanaitysae, A. striatocostata, Tyrrhenocythere amnicola and Loxoconcha immodulata of the ostracod assemblage, exhibiting Ponto-Caspian origin, were found. In addition, fossil ascidian spicules comprising various species of Bonetia, Micrascidites, Monniotia, and Rigaudia genera were encountered, probably representing Late Pleistocene to Holocene ages. Campylodiscus echeneis, Cocconeis placentula var. lineata Epithemia turgida var. granulata, Epithemia adnata, Nitzschia commutate and N. vermicularis, from the diatom assemblage are genera and species also found in the Iznik Lake and in the Black Sea. Mollusc and ostracod fauna, the Ponto-Caspian origin indicates that the Iznik Lake was connected with the Black Sea and the Marmara Sea in the recent period. Thus, the Ponto-Caspian assemblages indicate the early Neoeuxinian (Surozhian) brackish water inundated the study area