From magmatic arc to post-collisional back-arc setting in the Tauride-Anatolide Platform (TAP): Overview of the Cadomian basement rocks in Turkey

Date

2017-10-25

Author

Gürsu, Semih
Goncuoglu, M. Cemal
Köksal, Serhat
Möller, Andreas

Metadata

Show full item record

Item Usage Stats

637
views

0
downloads

A new geodynamic model is proposed to clarify the genesis of the Late Neoproterozoic - Early Cambrian meta-magmatic rocks cropped out in S Turkey. Cadomian basement rocks observed in peri-Gondwanan Turkey crop out in different Alpine tectonic terranes: Strandja, Istanbul Zonguldak Terrane (IZT), Tauride-Anatolide Platform (TAP) and South Anatolian Autochthone Belt (SAAB). Ediacaran magmatic arc and late to post-collisional igneous rocks in Turkey are mainly composed of meta-igneous rocks with a wide range of compositions. The oldest meta-magmatic rocks in the northern and western part of the country (Devrakani-Daday Massif-IZT, Bolu Massif-IZT and Menderes Massif-TAP, Derik-Mardin-SAAB) have ages of about 590-570 Ma that were predominantly obtained from the magmatic arc related granitic rocks (meta-tonalites/meta-granodiorites) and their volcanic equivalents (meta-andesitic/meta-rhyolites with rarely meta-basaltic lavas). From 560 to 545 Ma, igneous activity formed abundant I-type calc-alkaline late to post collisional granitic rocks and their felsic and mafic volcanic equivalents in the Strandja Massif, Menderes Massif-IZT, Taurides-TAP (Sandikli-İhsaniye-Afyon), SAAB-Bitlis Massif (Mutki-Genc). This was followed by 560-530 Ma continental back-arc mafic intrusions in the TAP and Menderes Massif. The Andean type arc-related igneous activity was followed by late to post-collisional magmatism during the initial stage of the extension in the marginal basin of peri-Gondwana that resulted in the lithospheric thinning associated with cataclastic deformation of the basement rocks at 545-530 Ma. As a result of early rifting between 560 and 530 Ma, lithospheric thinning in the continental crustal part of peri-Gondwana has resulted in opening a back-arc basin, where mafic magmatic products were generated along the northern edge of Gondwana just above the subducting Prototethys Ocean. The early Cambrian rifting may have resulted in separation of the arc-related intrusive and extrusive rocks from the post-collisional magmatic products of the peri-Gondwanan part of Turkey and hence the initial opening of an oceanic basin between the N and S of peri-Gondwanan part of Turkey. Similar tectonic scenarios have been suggested for other peri-Gondwanan terranes in Europe, Middle East, and eastern Asia.

URI

https://hdl.handle.net/11511/87773
https://gsa.confex.com/gsa/2017AM/webprogram/Paper297810.html

DOI

https://doi.org/10.1130/abs/2017AM-297810

Conference Name

GSA Annual Meeting - 2017

Collections

Other, Conference / Seminar

Suggestions

OpenMETU
Core

From design to synthesis and from structure to function: Helical polymers Çalışgan Ünay, Gizem; Akdağ, Akın; Department of Chemistry (2022-7-1) The helical structure is one of the most distinguished motifs encountered at various scales in nature, from subatomic to galactic scale. In the cosmos, as the size reaches a macro level, functionality increases, and the structures become more ordered. In such systems, helicity is commonly observed and plays a crucial role in functionality. With this in mind, helicity at a molecular level is also found intriguing. To form helical structures, small chiral building blocks arrange themselves accordingly with th...
First record of late Campanian paieoceanographic and paieociimatic changes, Arabian platform, Mazidag-Mardin area, SE Turkey Yılmaz, İsmail Ömer; Altıner, Sevinç; Kvacek, Jiri (2021-03-01) The sedimentology, geochemistry and paleontology of the pelagic upper Campanian Maastrichtian Bozova Formation in the "Mazidag" (Mazidagi) - Mardin area, SE Turkey, reveal paleoceanographic and paleoecological changes for the first time. A 119.25 m -thick composite stratigraphic section is characterized by alternating marls, clayey limestones, shales, and black shales; no coarse siliciclastic admixture or turbidite intercalations were recorded in the section. Biostratigraphic data indicate the presence of t...
Reconciling the geological history of western Turkey with plate circuits and mantle tomography van Hinsbergen, Douwe J. J.; Kaymakcı, Nuretdin; Spakman, Wim; Torsvik, Trond H. (2010-09-01) We place the geological history since Cretaceous times in western Turkey in a context of convergence, subduction, collision and slab break-off. To this end, we compare the west Anatolian geological history with amounts of Africa-Europe convergence calculated from the Atlantic plate circuit, and the seismic tomography images of the west Anatolian mantle structure. Western Turkish geology reflects the convergence between the Sakarya continent (here treated as Eurasia) in the north and Africa in the south, wit...
A tsunami generated by a possible submarine slide: Evidence for slope failure triggered by the North Anatolian Fault movement Minoura, K; Imamura, F; Kuran, U; Nakamura, T; Papadopoulos, GA; Sugawara, D; Takahashi, T; Yalçıner, Ahmet Cevdet (2005-11-01) A tsunamigenic sediment layer has been discovered in fluvio-alluvial sequences on the northern coast of the Marmara Sea, northwestern Turkey. The layer consists of unsorted silty coarse sand including terrestrial molluscs and charcoal fragments. The AMS radiometric ages of the shells have been estimated at around BC 400, AD 300, AD 400, and AD 1000. We propose that a tsunami occurred in the Marmara Sea in the middle of 11th century and invaded the fluvial plains. The older fossils were derived from the unde...
Geochemical characteristics of mafic lavas from the Neotethyan ophiolites in western Turkey: implications for heterogeneous source contribution during variable stages of ocean crust generation ALDANMAZ, ERCAN; Yaliniz, M. K.; GÜÇTEKİN, AYKUT; Göncüoğlu, Mehmet Cemal (2008-01-01) The Late Triassic to Late Cretaceous age mafic lavas from the Neotethyan suture zone ophiolites in western Turkey exhibit a wide diversity of geochemical signatures, indicating derivation from extremely heterogeneous mantle sources. The rocks as a whole can be divided into three broad subdivisions based on their bulk-rock geochemical characteristics: (1) mid-ocean ridge basalts (MORB) that range in composition from light rare earth element (LREE)-depleted varieties (N-MORB; (La/Sm)(N) < 1) through transitio...

Citation Formats

S. Gürsu, M. C. Goncuoglu, S. Köksal, and A. Möller, “From magmatic arc to post-collisional back-arc setting in the Tauride-Anatolide Platform (TAP): Overview of the Cadomian basement rocks in Turkey,” Seattle, USA, 2017, vol. 49, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/87773.