Palaeotethys-related sediments of the Karaburun Peninsula, western Turkey: constraints on provenance and stratigraphy from detrital zircon geochronology
Palaeotethys-related sediments of the Karaburun Peninsula, western Turkey: constraints on provenance and stratigraphy from detrital zircon geochronology
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土耳其西部卡拉布伦半岛与古特提斯相关的沉积物：碎屑锆石年代学对物源和地层学的限制
DOI：
10.1007/s00531-017-1458-9
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发表时间：
2017
影响因子：
2.3
通讯作者：
Berndt J
中科院分区：
文献类型：
--
作者：
Löwen K;Meinhold G;Güngör T;Berndt J
通过对土耳其西部卡拉布伦半岛15块晚古生代—早中生代硅质碎屑砂岩的碎屑锆石U-Pb年代学研究，确定了最大沉积时代，确定了可能的烃源区，并将研究区锚定在古特提斯界。硅屑砂岩的年龄从三叠纪到太古代，主要来源于古生代到新元古代，中元古代锆石很少。最年轻的年龄组将k<s:1> <s:1> kbahe组和Dikendağı组的最大沉积年龄限定在晚石炭世-早二叠世。三叠系砂岩碎屑锆石年龄主要为新元古代和古生代。Scythian-Anisian genence组的锆石年龄以泥盆纪和石炭系为主，而caran - rhaetian g<s:1> vercinlik组中也有二叠纪和三叠纪的锆石颗粒。根据锆石年龄群和可能源区的资料，除Dikendağı组的两个样品外，卡拉布润硅屑沉积物记录了晚古生代和早中生代欧亚大陆南缘单元的沉积物供应。这一解释与希腊密切相关的希俄斯岛和伊努塞斯岛的古构造重建相一致。Karaburun样品中泥盆系伴石炭系锆石的存在，与土耳其西北部Sakarya地区的Karakaya杂岩具有相似性。
Detrital zircon U–Pb geochronology of 15 Late Palaeozoic to Early Mesozoic siliciclastic sandstones from the Karaburun Peninsula in western Turkey determines maximum sedimentation ages, identifies possible source areas, and anchors the study area within the Palaeotethyan realm. Siliciclastic sandstones yielded ages from Triassic to Archean with major input from Palaeozoic to Neoproterozoic sources and very few Mesoproterozoic zircons. The youngest age groups set the new limit of the maximum depositional ages to Late Carboniferous–Early Permian for the Küçükbahçe and Dikendağı formations. Detrital zircons from Triassic sandstones are mainly Neoproterozoic and Palaeozoic in age. Zircons from the Scythian–Anisian Gerence Formation are predominantly Devonian and Carboniferous in age, while also Permian and Triassic zircon grains occur in the Carnian–Rhaetian Güvercinlik Formation. According to the zircon age populations and the data available from possible source regions, the Karaburun siliciclastic sediments, with the exception of two samples from the Dikendağı Formation, record sediment supply from units located at the southern margin of Eurasia during Late Palaeozoic and Early Mesozoic times. This interpretation is in agreement with palaeotectonic reconstructions for the closely related Greek islands of Chios and Inousses. The presence of Devonian accompanied by Carboniferous zircons in some of the Karaburun samples reveals similarities with Karakaya Complex sandstones of the Sakarya Zone in NW Turkey.
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DOI：
10.3929/ethz-a-004523353
发表时间：
2002
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
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