کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4693676 1636876 2010 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Along-strike variations of P–T conditions in accretionary wedges and syn-orogenic extension, the HP–LT Phyllite–Quartzite Nappe in Crete and the Peloponnese
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Along-strike variations of P–T conditions in accretionary wedges and syn-orogenic extension, the HP–LT Phyllite–Quartzite Nappe in Crete and the Peloponnese
چکیده انگلیسی

Syn-orogenic detachments in accretionary wedges make the exhumation of high-pressure and low-temperature metamorphic rocks possible with little erosion. The velocity of exhumation within the subduction channel or the accretionary complex, and thus the shape of P–T paths, depend upon the kinematic boundary conditions. A component of slab retreat tends to open the channel and facilitates the exhumation. We document the effect of slab retreat on the shape of P–T paths using the example of the Phyllite–Quartzite Nappe that has been exhumed below the Cretan syn-orogenic detachment during the Miocene in Crete and the Peloponnese. Data show a clear tendency toward colder conditions at peak pressure and during exhumation where the intensity of slab retreat is larger. This spatial evolution of P–T gradient is accompanied with an evolution from a partly coaxial regime below the Peloponnese section of the detachment toward a clearly non-coaxial regime in Crete.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tectonophysics - Volume 480, Issues 1–4, 5 January 2010, Pages 133–148
نویسندگان
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