中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 岩石圈演化国家重点实验室
Silurian anorogenic basic and acidic magmatism in Northwest Turkey: Implications for the opening of the Paleo-Tethys

文献类型：期刊论文

作者Topuz, Gultekin2; Candan, Osman3; Okay, Aral, I2; von Quadt, Albrecht4; Othman, Malik5; Zack, Thomas1,6; Wang, Jiamin7
刊名LITHOS
出版日期2020-03-01
卷号356页码:14
关键词U-Pb zircon dating Zircon Hf isotopes Paleo-Tethys Silurian magmatism Armorica Sakarya Zone Turkey
ISSN号0024-4937
DOI10.1016/j.lithos.2019.105302
英文摘要The Sakarya Zone (northern Turkey) is a Gondwana-derived continental block accreted to northern Laurussia during the Carboniferous, and is regarded as the eastward extension of Armorica. Timing of its detachment from the northern margin of Gondwana, thus opening of the Paleo-Tethys, is poorly known. Here, we report on metagranite and amphibolite with Silurian igneous crystallization ages from the Early Carboniferous high-temperature/middle to low-pressure amphibolite-facies metamorphic rocks of the Sancakaya Massif within the Sakarya Zone (NW Turkey). The metagranite-amphibolite complex is exposed mainly along the southern margin of the Sancakaya Massif over an area of ca. 12 km by 15 km. The metagranite contains preserved domains of porphyric texture, indicative of derivation from a former granite porphyry. The amphibolite is devoid of any relict igneous texture. Both the metagranite and amphibolite are crosscut by late up to 50 cm thick felsic veins. Uranium-Pb dating on igneous zircons from both metagranite and amphibolite yielded Silurian ages of ca. 419 +/- 6 to 434 +/- 7 Ma (2 sigma), and on those from a felsic vein an age of 319 +/- 5 Ma (2 sigma) (Late Carboniferous). Geochemically, amphibolite displays anorogenic transitional tholeiitic to alkaline signatures. Initial cHf values of the igneous zircons from both metagranite and amphibolite show a large variation with medial values of -16 to -9 and + 3 to +6, respectively. Thus, the protoliths of amphibolite were derived from melts of depleted mantle, and those of the metagranite, on the other hand, from melts of reworked crustal material. We suggest that the Silurian anorogenic magmatism is related to a rifting event at the northern margin of Gondwana leading to the detachment of the Sakarya Zone and hence placing an age on the initial opening of the Paleo-Tethys. This interpretation is based on (i) the presence of Late Silurian to Devonian deep-sea sedimentary blocks in the PaleoTethyan accretionary complexes, and (ii) the resemblance of the U-Pb age spectra of detrital zircons in the metadastic sequence of the Sancakaya Massif to those of Cambro-Ordovician sandstones in Jordan (Gondwana), and (iii) the local occurrence of anorogenic A-type granites of Late Ordovician-Silurian age in the AnatolideTauride Block, a continental block which rifted from Gondwana during the Early Triassic. Wholly anorogenic nature of the Late Ordovician to Silurian igneous rocks in the Sancakaya Massif and reported in literature does not support the opening of the Paleo-Tethys as back-arc ocean, as suggested in most paleogeographic reconstructions. (C) 2019 Elsevier B.V. All rights reserved.
WOS关键词NE TURKEY ; EASTERN PONTIDES ; SAKARYA ZONE ; NORTHEAST TURKEY ; PULUR COMPLEX ; NW TURKEY ; GRANITOID MAGMATISM ; OPHIOLITE FORMATION ; DEVONIAN MAGMATISM ; MASS-SPECTROMETRY
资助项目research foundation of the istanbul Teknik Universitesi[8629] ; research foundation of the istanbul Teknik Universitesi[9853] ; Turkish Academy of Science (TUBA)
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000520941500026
出版者ELSEVIER
资助机构research foundation of the istanbul Teknik Universitesi ; research foundation of the istanbul Teknik Universitesi ; Turkish Academy of Science (TUBA) ; Turkish Academy of Science (TUBA) ; research foundation of the istanbul Teknik Universitesi ; research foundation of the istanbul Teknik Universitesi ; Turkish Academy of Science (TUBA) ; Turkish Academy of Science (TUBA) ; research foundation of the istanbul Teknik Universitesi ; research foundation of the istanbul Teknik Universitesi ; Turkish Academy of Science (TUBA) ; Turkish Academy of Science (TUBA) ; research foundation of the istanbul Teknik Universitesi ; research foundation of the istanbul Teknik Universitesi ; Turkish Academy of Science (TUBA) ; Turkish Academy of Science (TUBA)
源URL[http://ir.iggcas.ac.cn/handle/132A11/95506]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Topuz, Gultekin
作者单位1.Univ Gothenburg, Dept Earth Sci, Gothenburg, Sweden
2.Istanbul Tech Univ, Avrasya Yer Bilimleri Enstitusu, TR-34469 Istanbul, Turkey
3.Dokuz Eylul Univ, Jeoloji Muhendisligi Bolumu, Izmir, Turkey
4.Swiss Fed Inst Technol, Dept Earth Sci, Inst Geochem & Petrol, Clausiusstr 25, CH-8092 Zurich, Switzerland
5.Misurata Univ, Fac Sci, Geol Dept, Misurata, Libya
6.Univ Adelaide, Dept Earth Sci, Adelaide, SA, Australia
7.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, 19 Beitucheng West Rd, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Topuz, Gultekin,Candan, Osman,Okay, Aral, I,et al. Silurian anorogenic basic and acidic magmatism in Northwest Turkey: Implications for the opening of the Paleo-Tethys[J]. LITHOS,2020,356:14.
APA Topuz, Gultekin.,Candan, Osman.,Okay, Aral, I.,von Quadt, Albrecht.,Othman, Malik.,...&Wang, Jiamin.(2020).Silurian anorogenic basic and acidic magmatism in Northwest Turkey: Implications for the opening of the Paleo-Tethys.LITHOS,356,14.
MLA Topuz, Gultekin,et al."Silurian anorogenic basic and acidic magmatism in Northwest Turkey: Implications for the opening of the Paleo-Tethys".LITHOS 356(2020):14.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。