Sarackoy Volcanic Suite: implications for the subductional phase of arc evolution in the Galatean Arc Complex, Ankara, Turkey

Date

2003-01-01

Author

Kocyigit, A
Winchester, JA
Bozkurt, Erdin
Holland, G

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

47
views

0
downloads

A sequence of upper Campanian volcanic rocks, hitherto considered as part of the Miocene calc-alkaline Galatean volcanic sequence, crops out near Sarackoy, 40 km north of Ankara. These volcanic rocks, unconformably overlain by Eocene nummulitic limestones, comprise thin flows and volcaniclastic deposits. They can be divided compositionally into three distinct subunits: (i) basal massive trachyandesitic volcaniclastic rocks with a thin flow at the top, overlain by (ii) mixed volcaniclastic rocks and thin amygdaloidal flows of alkali basaltic composition, with (iii) trachyandesitic flows and subordinate volcaniclastic rocks at the top. This alkaline volcanic activity, associated with late Campanian forearc peripheral sedimentation, is indicative of late Campanian extension within a collisional regime, pre-dating the compression accompanying Galatean arc development.

Subject Keywords

Geology

URI

https://hdl.handle.net/11511/38569

Journal

GEOLOGICAL JOURNAL

DOI

https://doi.org/10.1002/gj.921

Collections

Department of Geological Engineering, Article

Suggestions

OpenMETU
Core

Rapid cooling history of a Neotethyan ophiolite: Evidence for contemporaneous subduction initiation and metamorphic sole formation PARLAK, OSMAN; Dunkl, Istvan; KARAOĞLAN, FATİH; Kusky, Timothy M.; Zhang, Chao; Wang, Lu; Koepke, Juergen; Billor, Zeki; Hames, Willis E.; ŞİMŞEK, EMRAH; Simsek, Gokce; ŞİMŞEK, TUĞÇE; Ozturk, Selena Ezgi (Geological Society of America, 2019-11-01) The Beywhir-Hoyran Nappes, including Mesozoic carbonate platform rocks, deepsea sediments, and ophiolite-related units, crop out extensively on the western limb of the Isparta Angle in the Central Taurides, Turkey. The ophiolite-related rocks are represented by variably serpentinized harzburgitic mantle tectonites, tectonically underlain by a subophiolitic metamorphic sole and melange. The harzburgitic mantle tectonites and metamorphic sole are intruded by undeformed isolated dikes. Protoliths of the metamo...
GIS based geothermal potential assessment for Western Anatolia Tüfekçi, Nesrin; Süzen, Mehmet Lütfi; Department of Geological Engineering (2006) This thesis aims to predict the probable undiscovered geothermal systems through investigation of spatial relation between geothermal occurrences and its surrounding geological phenomenon in Western Anatolia. In this context, four different public data, which are epicenter map, lineament map, Bouger gravity anomaly and magnetic anomaly maps, are utilized. In order to extract the necessary information for each map layer the raw public data is converted to a synthetic data which are directly used in the analy...
EVIDENCE AGAINST THE CORE COVER INTERPRETATION OF THE SOUTHERN SECTOR OF THE MENDERES MASSIF, WEST TURKEY Bozkurt, Erdin; WINCHESTER, JA (Wiley, 1993-01-01) The Menderes Massif, in western Anatolia, has been described as a lithological succession comprising a basal 'Precambrian gneissic core of sedimentary origin' overlain in sequence by 'Palaeozoic schist' and 'Mesozoic-Cenozoic marble' forming the envelope. The boundary between core and schist envelope was interpreted as a major unconformity, the 'Supra-Pan-African unconformity'. By contrast, our field observations and geochemical data show that around the southern side of Besparmak Mountain, north of Selimiy...
Paleogene evolution and demise of the proto-Paratethys Sea in Central Asia (Tarim and Tajik basins): Role of intensified tectonic activity at ca. 41 Ma Kaya, Mustafa Yücel; Dupont-Nivet, Guillaume; Proust, Jeannoel; Roperch, Pierrick; Bougeois, Laurie; Meijer, Niels; Frieling, Joost; Fioroni, Chiara; Altıner, Sevinç; Vardar, Ezgi; Barbolini, Natasha; Stoica, Marius; Aminov, Jovid; Mamtimin, Mehmut; Guo Zhaojie, Guo Zhaojie (Wiley, 2019-06-01) The proto-Paratethys Sea covered a vast area extending from the Mediterranean Tethys to the Tarim Basin in western China during Cretaceous and early Paleogene. Climate modelling and proxy studies suggest that Asian aridification has been governed by westerly moisture modulated by fluctuations of the proto-Paratethys Sea. Transgressive and regressive episodes of the proto-Paratethys Sea have been previously recognized but their timing, extent and depositional environments remain poorly constrained. This hamp...
Erosional truncation of uppermost Permian shallow-marine carbonates and implications for Permian-Triassic boundary events Payne, Jonathan L.; Lehrmann, Daniel J.; Follett, David; Seibel, Margaret; Kump, Lee R.; Riccardi, Anthony; Altıner, Demir; Sano, Hiroyoshi; Wei, Jiayong (Geological Society of America, 2007-07-01) On shallow-marine carbonate buildups in south China, Turkey, and Japan, uppermost Permian skeletal limestones are truncated by an erosional surface that exhibits as much as 10 cm of topography, including overhanging relief. Sedimentary facies, microfabrics, carbon isotopes, and cements together suggest that erosion occurred in a submarine setting. Moreover, biostratigraphic data from south China demonstrate that the surface postdates the uppermost Permian sequence boundary at the global stratotype section a...

Citation Formats

A. Kocyigit, J. Winchester, E. Bozkurt, and G. Holland, “Sarackoy Volcanic Suite: implications for the subductional phase of arc evolution in the Galatean Arc Complex, Ankara, Turkey,” GEOLOGICAL JOURNAL, pp. 1–14, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38569.