SUNAL, G., SATIR, M., NATAL'IN, B. A., TOPUZ, G., VONDERSCHMIDT, O. (2011) Metamorphism and diachronous cooling in a contractional orogen: the Strandja Massif, NW Turkey. Geological Magazine, 148 (4) 580-596 doi:10.1017/s0016756810001020
Reference Type | Journal (article/letter/editorial) | ||
---|---|---|---|
Title | Metamorphism and diachronous cooling in a contractional orogen: the Strandja Massif, NW Turkey | ||
Journal | Geological Magazine | ||
Authors | SUNAL, G. | Author | |
SATIR, M. | Author | ||
NATAL'IN, B. A. | Author | ||
TOPUZ, G. | Author | ||
VONDERSCHMIDT, O. | Author | ||
Year | 2011 (July) | Volume | 148 |
Page(s) | 580-596 | Issue | 4 |
Publisher | Cambridge University Press (CUP) | ||
DOI | doi:10.1017/s0016756810001020Search in ResearchGate | ||
Mindat Ref. ID | 260555 | Long-form Identifier | mindat:1:5:260555:9 |
GUID | 47128f9e-ac0d-497c-b2de-0f36ec9b48b0 | ||
Full Reference | SUNAL, G., SATIR, M., NATAL'IN, B. A., TOPUZ, G., VONDERSCHMIDT, O. (2011) Metamorphism and diachronous cooling in a contractional orogen: the Strandja Massif, NW Turkey. Geological Magazine, 148 (4) 580-596 doi:10.1017/s0016756810001020 | ||
Plain Text | SUNAL, G., SATIR, M., NATAL'IN, B. A., TOPUZ, G., VONDERSCHMIDT, O. (2011) Metamorphism and diachronous cooling in a contractional orogen: the Strandja Massif, NW Turkey. Geological Magazine, 148 (4) 580-596 doi:10.1017/s0016756810001020 | ||
In | (2011, July) Geological Magazine Vol. 148 (4) Cambridge University Press (CUP) | ||
Abstract/Notes | AbstractThe southern part of the Strandja Massif, northern Thrace, Turkey, comprises a basement of various gneisses, micaschists and rare amphibolite, and a cover of metaconglomerate and metasandstone, separated from each other by a pre-metamorphic unconformity. Metamorphic grade decreases from the epidoteâamphibolite facies in the south to the albiteâepidoteâamphibolite/greenschist-facies transition in the north. Estimated PâT conditions are 485â530°C and 0.60â0.80 GPa in the epidoteâamphibolite facies domain, and decrease towards the transitional domain between greenschist- and epidoteâamphibolite facies. RbâSr muscovite ages range from 162.9 ± 1.6 Ma to 149.1 ± 2.1 Ma, and are significantly older (279â296 Ma) in the northernmost part of the study area. The RbâSr biotite ages decrease from 153.9 ± 1.5 Ma in the south to 134.4 ± 1.3 Ma in the north. These age values in conjunction with the attained temperatures suggest that the peak metamorphism occurred at around 160 Ma and cooling happened diachronously, and RbâSr muscovite ages were not reset during the metamorphism in the northernmost part. Structural features such as (i) consistent S-dipping foliation and SW to SE-plunging stretching lineation, (ii) top-to-the-N shear sense, and (iii) N-vergent ductile shear zones and brittle thrusts suggest a N-vergent compressional deformation coupled with exhumation. We tentatively ascribe this metamorphism and subsequent diachronous cooling to the northward propagation of a thrust slice. The compressional events in the Strandja Massif were most probably related to the coeval N-vergent subduction/collision system in the southerly lying Rhodope Massif. |
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