کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5781552 | 1636694 | 2017 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
South Menderes Monocline: Low-temperature thermochronology constrains role of crustal extension in structural evolution of southwest Turkey
ترجمه فارسی عنوان
جنوبی مندرز مونوکلین: دماسنجی درجه حرارت پایین محدودیت گسترش پوسته در تکامل ساختاری جنوب غربی ترکیه
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
چکیده انگلیسی
We report apatite and zircon fission-track data across the contact zones between the Menderes nappes, the Cycladic blueschist unit, and the Ãren nappe, in the Anatolide belt of southwest Turkey. These data resolve previous debate on the deformation history of these Cretaceous to Eocene nappe contacts, including whether they were reactivated during late Oligocene to Miocene crustal extension. Apatite fission-track ages range from 18 to 28Â Ma in the Menderes nappes, and 31 to 42Â Ma in the Ãren nappe. Zircon fission-track ages are 29 to 31Â Ma in the Menderes nappes, 30 to 33Â Ma in the Cycladic blueschist unit, and between 93Â Ma and 129Â Ma in the Ãren nappe. The data reveal that the tectonic contacts within the Menderes nappes, and with the overlying Cycladic blueschist unit have been sealed since ~Â 35-30Â Ma. In the Ãren nappe, zircon fission-track ages are distinctly older (with mixed single grain ages between ~Â 300 and 75Â Ma) reflecting partial to full resetting during late Cretaceous high-pressure metamorphism. The contact between the Cycladic blueschist unit and the Ãren nappe shows no significant tectonic movement in the brittle crust after ~Â 70Â Ma. These data reveal that the nappe boundaries in the southern Menderes Massif have undergone no significant differential offset relative to the Earth's surface since the Oligocene and therefore were not reactivated during late Oligocene to Miocene continental extension. We interpret the steeply dipping portion of the nappe pile in the southern Menderes Massif as a tilted crustal section, which we name the 'South Menderes Monocline'. We speculate this monocline formed by differential uplift in the Miocene, either at the hinge zone of a plateau, or by unloading of the Simav detachment footwall.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tectonophysics - Volumes 712â713, 21 August 2017, Pages 455-463
Journal: Tectonophysics - Volumes 712â713, 21 August 2017, Pages 455-463
نویسندگان
Uwe Ring, Klaus Gessner, Stuart N. Thomson,