Geology and trona potential of the middle Miocene Gürün (Sivas) basin, Central Anatolia, Turkey

Önal, Mehmet; Helvacı, Cahit; Ceyhan, Fuat

doi:10.1007/bf03178475

Cited by 11 publications

(20 citation statements)

References 12 publications

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“…The Giiriin Basin was first affected by the extensional tectonic regime, and than was changed to a compressional regime during the late-Miocene time. During this new tectonic phase, NE-SW compressional regime occurring in the region probably originated from the movement of the East Anatolian Fault (EAF) (Fig.I) (Onal et al 2004). …”

Section: Methodsmentioning

confidence: 99%

“…1 and 2) (Onal et al 2004). The preMiocene basement rocks are Triassic-Jurassic-Cretaceous and middle-late Eocene in age and consist oflimestone (the Munzur Limestone) and flysch like sediments (the Yiiceyurt and Demiroluk Formations).…”

Section: Geological Settingmentioning

confidence: 95%

“…4 A-C) (Ceyhan et al 2000;Onal et al 2004). Micritic limestones yield locally gastropod fossils in the upper parts of the sequence.…”

Section: Geological Settingmentioning

confidence: 95%

“…1) (Onal et al 2001). The Giiriin Basin has been investigated by general geology, hydrogeology, mineralogy and biostratigraphy (Akkus 1971;Erkan et al 1978;Kurtman 1978;Aziz et al1979Aziz et al , 1982Aziz and Erakman 1980;Granit 1990;Atabey et al 1994;Ceyhan et al 2000;Yalcm 2001;Onal et al 2004). Recently, several papers dealing with the industrial minerals such as trona and bituminous shale were published (Helvaci 2001;Onal et al 2004Onal et al , 2006.…”

Section: Introductionmentioning

confidence: 96%

“…The Giiriin Basin has been investigated by general geology, hydrogeology, mineralogy and biostratigraphy (Akkus 1971;Erkan et al 1978;Kurtman 1978;Aziz et al1979Aziz et al , 1982Aziz and Erakman 1980;Granit 1990;Atabey et al 1994;Ceyhan et al 2000;Yalcm 2001;Onal et al 2004). Recently, several papers dealing with the industrial minerals such as trona and bituminous shale were published (Helvaci 2001;Onal et al 2004Onal et al , 2006. Also the lithofacies of the Gurun Formation is interpreted as playa-lake type deposits similar to that of Eugster and Surdam (1973), Yagmurlu and Helvaci, (1994), Helvacl (1998) and Yarol et al (2005).…”

Section: Introductionmentioning

confidence: 96%

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Sedimentology and geochemistry of the middle miocene playa lake evaporites in the Gürün basin (S of Sıvas), central Anatolia, Turkey

Önal

Helvacı

Teki̇n

et al. 2008

Carbonates Evaporites

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The Gurun basin is a half graben filled by alluvial, fluvial and playa-lake deposits of the GiiriinFormation accumulated under the N-S direction extensional tectonic regime and volcanic rocks.The Giiriin Fomation is divided into four members such as the Kavak, Gokpmar, Cayboyu and Terzioglu members, and the Cayboyu Memberhas two different evaporitic occurrencessuch as selenitic and satin spar. During the firstphase of evaporite deposition,selenitic gypsum crystals in 5 to 15 cm thick layer within the dolomitic mudstones were formed. The second evaporitic phase consists of four different levels of cavity filling within the sandstones and shale alternation at the upper part of sequence originated as 5 to 10 ern sized satin-spar gypsum crystals with white colored, partly orientated, fibrous-radial shaped. XRF major, minor and some rare elements analyses (La, Ce, Ta, Wand U) and low 8 7S r/86Sr (%0) and 8 34S (CDT) values indicate that meteoric and volcanic solution occasionally mixed with the lake water.In addition, low 8 18 0 (SMOW) values in the continental evaporate could be interpreted as mixing of fresh water with the playa lake environment. Selenitic gypsum in the Cayboyu Member of the GiiriinFormation was precipitated from ground water-brine water rich in humic acid during periodic desiccations of in the shore-lake plain.

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Section: Methodsmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 95%

“…4 A-C) (Ceyhan et al 2000;Onal et al 2004). Micritic limestones yield locally gastropod fossils in the upper parts of the sequence.…”

Section: Geological Settingmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 96%

See 3 more Smart Citations

Sedimentology and geochemistry of the middle miocene playa lake evaporites in the Gürün basin (S of Sıvas), central Anatolia, Turkey

Önal

Helvacı

Teki̇n

et al. 2008

Carbonates Evaporites

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Turkish Trona Deposits: Geological Setting, Genesis and Overview of the Deposits

Helvacı¹

2019

Modern Approaches in Solid Earth Sciences

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Late Eocene-Early Miocene Palaeogeographic Evolution of Central Eastern Anatolian Basins, the Closure of the Neo-Tethys Ocean and Continental Collision

Karadenizli

Varol

Saraç

et al. 2016

Journal of the Geological Society of India

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In central eastern Anatolia which is located between Eurasia and Africa, the study of basin developments between late Eocene and early Miocene is of great importance for understanding the process of the closure of the Neo-Tethys Ocean and the formation of strike-slip faults and regional uplift. To study these, three basins were selected: the Sivas-Erzincan, Gürün-Akkisla-Divrigi (GAD), and Malatya basins. The study proposes that the opening of the GAD basin played a key role in the formation of the Ecemis fault, which started developing at the end of early Miocene, and in mountain uplift. All these basins are situated on continental blocks and oceanic crust, arranged from north to south as the Sakarya continent, the Izmir-Ankara-Erzincan ocean (Northern Neo-Tethys), the Kirsehir continent, the inner Tauride ocean, the Munzur-Binboga block, the Maden (=Berit) ocean, the Bitlis-Pütürge block, the Çüngüs ocean and the Arabian continent. The findings indicate that late Eocene-early Miocene successions in these basins were not deposited in foreland basins formed in front of the thrust faults associated with the closure of the ocean, as stated in previous studies. Rather, they were deposited in forearc and backarc basins related to the subduction which was effective until the end of early Miocene. The Sivas-Erzincan and Malatya basins, located on the inner Tauride and Maden (=Berit) oceans, were forearc basins, while the GAD basin situated on the Munzur-Binboga block was a backarc basin. These basins have parallel developments up to the end of early Miocene. While marine sediments were deposited in the Malatya and Sivas-Erzincan basins between late Eocene and early Miocene, terrestrial units began to settle in the GAD basin from the late Eocene and the deposition there is continuous until the end of the early Miocene. Collision of the Arabian and the Anatolian plates at the end of early Miocene (16-18 Ma) produced the left-strike slip Ecemis fault zone, which caused the lateral slip of sedimentary units in the Sivas-Erzincan and GAD basins over hundreds of kilometers. This event produced the first westward tectonic escape of the Anatolian plate prior to the north Anatolian fault (NAF) and the east Anatolian fault (EAF). The Gürün region located in the GAD basin was exhumed in late Miocene and this basin was broken. The Gürün region, which remains on the rising part of the Munzur-Binboga block, is not a different basin as stated earlier, but it is a part of the GAD basin, representing the central part of the GAD basin lake, as indicated by the fine grained deposits (limestones and clay) that occur in the Gürün area.

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Geology and trona potential of the middle Miocene Gürün (Sivas) basin, Central Anatolia, Turkey

Cited by 11 publications

References 12 publications

Sedimentology and geochemistry of the middle miocene playa lake evaporites in the Gürün basin (S of Sıvas), central Anatolia, Turkey

Sedimentology and geochemistry of the middle miocene playa lake evaporites in the Gürün basin (S of Sıvas), central Anatolia, Turkey

Turkish Trona Deposits: Geological Setting, Genesis and Overview of the Deposits

Late Eocene-Early Miocene Palaeogeographic Evolution of Central Eastern Anatolian Basins, the Closure of the Neo-Tethys Ocean and Continental Collision

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