scholarly journals Geology, mineralogy, geochemistry, and depositional environment of a Late Miocene/Pliocene fluviolacustrine succession, Cappadocian Volcanic Province, central Anatolia, Turkey

2014 ◽  
Vol 23 ◽  
pp. 386-411 ◽  
Author(s):  
Ersel GÖZ ◽  
Selahattin KADİR ◽  
Ali GÜREL ◽  
Muhsin EREN
Keyword(s):  
Late Miocene ◽  
Depositional Environment ◽  
Central Anatolia ◽  
Volcanic Province

scholarly journals The First Glyptostroboxylon and Taxodioxylon Descriptions from the Late Miocene of Turkey and Palaeoclimatological Evaluation

2019 ◽  
Vol 75 (2) ◽  
pp. 268-280 ◽  
Author(s):  
Ünal Akkemik ◽  
Nevriye Neslihan Acarca Bayam
Keyword(s):  
Late Miocene ◽  
Early Miocene ◽  
Central Anatolia ◽  
Forest Composition ◽  
Fossil Species ◽  
Volcanic Province ◽  
History Of ◽  
Warm Temperate Forest ◽  
Central Turkey ◽  
Warm Temperate

Taxodioxylon Hartig, (emended by Gothan 1905) was widely described from the late Oligocene of the European part of Turkey (Thrace) and the early Miocene of greater Turkey, Anatolia.,C,. was also described from the early Miocene of central Anatolia. The purpose of this paper is to present a more detailed extended history of these two genera up to the late Miocene (Tortonian) with new descriptions from the Galatean Volcanic Province in central Turkey. The wood identification showed the presence of two fossil species;,D,et B,and,(G,.) G,. In conclusion, the swamp and lowland warm-temperate forest composition including,and,in the Galatean Volcanic Province, continued from the early Miocene (Burdigalian) to the late Miocene (Tortonian).

scholarly journals Palynological profile and depositional environment of the Ishim formation (upper Miocene) in Tobol-Ishim interfluve, Western Siberia

2019 ◽  
Vol 27 (6) ◽  
pp. 103-123
Author(s):  
O. B. Kuzmina ◽  
I. V. Khazina ◽  
P. V. Smirnov ◽  
A. O. Konstantinov ◽  
A. R. Agatova
Keyword(s):  
Late Pleistocene ◽  
Organic Substance ◽  
Late Miocene ◽  
Depositional Environment ◽  
Western Siberia ◽  
Ice Age ◽  
Quaternary Sediments ◽  
Upper Miocene ◽  
Neogene Sediments ◽  
First Time

For the first time some outcrops of the Upper Miocene Ishim Formation on the south of Tyumen Area near Pyatkovo, Masali and Bigila villages are studied by palynological method in detail. A series of mineralogical analyzes of these sediments and radiocarbon analysis of the Quaternary sediments overlying the Ishim Formation are done. Four palynocomplexes (PC) are established in the Ishim Formation: PC1 with Botryococcus; PC2 with Botryococcus, Sigmopollis; PC3 with Alnus, Polypodiaceae, Botryococcus, Sigmopollis; PC4 with Betula, Alnus, Corylus. The layers with PC1, PC2 и PC3 are traced in two outcrops near Masali and Bigila Villages. PC4 is revealed from the sands and aleuropelits of the outcrop near Pyatkovo Village, it is characterized by a significant content of diverse pollen of temperate termophylic broad-leafed taxa and by the presence of rare typical Miocene elements (Таxodiaceae, Nyssa, Tsuga). The PC3 and PC4 are compared with the complexes well known from the Neogene sediments of Western Siberia. PC5 with Betula, Herbae, Fungi is revealed from the bedded silts overlying the Ishim Formation in Masali outcrop. Previously, these sediments were attributed to the Late Miocene Pavlodar Formation. The composition and the structure of PC5 allowed making an assumption about Quaternary age of the enclosing sediments. Radiocarbon analysis of the organic substance from the silts showed, that these sediments were accumulated in the Late Pleistocene (Sartan Ice Age). For the first time the information about microphytoplankton (Botryococcus, Pediastrum, Zygnemataceae, Sigmopollis) and other nonpollen palynomorphs, contained in Ishim Formation (Upper Miocene) and in Pleistocene sediments, is given. On palynological data, some stages of development of the Late Miocene Ishim Basin and the type of vegetation surrounding this basin are considered. The depositional environment of Pleistocene sediments (Masali outcrop) is reconstructed.

Late Miocene−early Pliocene rodents and lagomorphs (Mammalia) from the southern part of Çankırı Basin, Turkey

2018 ◽  
Vol 93 (1) ◽  
pp. 173-195 ◽  
Author(s):  
Sevket Sen ◽  
Levent Karadenizli ◽  
Pierre-Olivier Antoine ◽  
Gerçek Saraç
Keyword(s):  
Late Miocene ◽  
Central Anatolia ◽  
Large Species ◽  
Southern Europe ◽  
Early Pliocene ◽  
Muroid Rodents

AbstractThree localities in the Çankırı Basin—Kale Tepe 1 (KT1), Kale Tepe 2 (KT2), and Mahmutlar—yielded reliably documented rodent and lagomorph assemblages. These are in the Akkaşdağı Formation, which covers large areas in the central and southern parts of this basin in Central Anatolia. The widening of the Kirikkale-Çorum highway produced fresh outcrops that allowed for the discovery of fossiliferous levels in a well-controlled stratigraphy. The assemblages from all three localities are dominated by muroid rodents (Apodemus gorafensisRuiz Bustos et al., 1984;A. gudrunaevan de Weerd, 1976;A. dominansKretzoi, 1959;Micromyssp. indet.;Allocricetussp. indet.;Pseudomerionessp. indet.; Cricetidae gen. indet. sp. indet.;Mimomyssp. indet.) in addition to a glirid (Dryomimuscf.D. eliomyoidesKretzoi, 1959), an eomyid (Keramidomysaff.K. ermannorumDaxner-Höck and Höck, 2009), two ochotonids (Prolagus sorbiniiMasini, 1989;Ochotonomasp. indet.) and one leporid. KT1 and KT2 yielded two large species ofApodemus(A. gorafensis;A. gudrunae) that are typical for the late Miocene/early Pliocene transition in southern Europe, and they are known in Greece and Turkey in localities dated to the latest Miocene, i.e., MN 13 mammalian zone. The occurrence ofA. dominansand a rooted arvicolid similar toMimomys davakosivan de Weerd, 1979 suggests correlation of Mahmutlar to the early Pliocene, or early MN 15 zone. An abundance of muroid rodents in these assemblages indicates woodlands and areas covered by grasses and shrubs, whereas early Pliocene deposits at Mahmutlar provided pollen of abundant herbaceous and shrub elements. Most rodents and lagomorphs from Kale Tepe and Mahmutlar are known in southern European bioprovinces, whereas some elements (PseudomerionesSchaub, 1934;OchotonomaSen, 1998) indicate Asiatic affinities.

scholarly journals Foraminiferal Analysis of the Late Miocene- Early Pleistocene Mangaopari Mudstone, South Wairarapa, New Zealand

2021 ◽  
Author(s):  
◽  
Shelby Stoneburner
Keyword(s):  
New Zealand ◽  
Late Miocene ◽  
Depositional Environment ◽  
Early Pleistocene ◽  
Tectonic Event ◽  
Early Pliocene ◽  
Two Samples ◽  
Different Parts ◽  
Medium Silt

<p>The foraminiferal content of thirty-two samples from the late Miocene-early Pleistocene Mangaopari Mudstone within the southern Wairarapa region have been examined with the aim of determining the age and depositional environment of the unit. In particular the study addressed whether or not there were glacioeustatic cycles present in the unit. Integrating foraminiferal faunal distributions and sedimentological analysis provided geological, paleoclimactic, and paleoceanographic evidence to aid in the reconstruction of the paleoenvironment. The data was then compared with conclusions from previous studies.  The section was divided into two different parts (upper and lower) based on changes in foraminiferal assemblages and grainsize distributions. The age and depositional environment of the Mudstone is suggested by the presence of several genera and species of foraminifera which is supported by grainsize analysis. The presence of Martinottiella communis and Karreriella cylindrica between 0-157.1m stratigraphically suggest that accumulation began in bathyal conditions at depths greater than 400m between. This is supported by grainsize analysis which indicates a medium silt with a high percent mud content ranging from 91.5-100%. This demonstrates deposition beginning in the late Miocene-early Pliocene at bathyal depths greater than 400m. The upper part of the mudstone (157.6-216.3) illustrates a regressive sequence with a distinctive shift to a much shallower depositional environment at outermost shelfal depths likely of 150-200m. This is represented with the presence of Truncorotalia sp. and Zygochlamys delicatula. Grainsize also support this discovery with a shift to very fine sandy silts with a percent mud content ranging from 83-93%.  Previous findings conclude that this distinctive shift was caused by glacioeustatic cycles yet our data do not correlate with our glacioeustatic findings. Therefore, this shift is believed to be triggered by a tectonic event.</p>

scholarly journals The late Miocene Öksüt high sulfidation epithermal Au-Cu deposit, Central Anatolia, Turkey: Geology, geochronology, and geochemistry

2020 ◽  
Vol 126 ◽  
pp. 103795
Author(s):  
Ali Aluç ◽  
İlkay Kuşcu ◽  
Irena Peytcheva ◽  
Mustafa Cihan ◽  
Albrecht von Quadt
Keyword(s):  
Late Miocene ◽  
Central Anatolia ◽  
High Sulfidation ◽  
Epithermal Au
Sign in / Sign up

Export Citation Format

Share Document