Tectonic setting of some Paleozoic metamorphics in northern Anatolia

Date

1997-01-01

Author

Rojay, Fuat Bora

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In northern Anatolia along the Izmir-Ankara-Erzurum Suture, the low-grade metamorphics display strong protolithologic similarities. However, the classification of these metamorphics with respect to ' their prototithological stratigraphy, internal organization, age and boundary relations are still not clear due to limited number of metamorphic studies. Amasya region in NW Central Anatolia is selected and studied to shed some light onto the metamor-phic problem in northern Anatolia. TectonostratigraphicaUy, three distinctly different metamorphic rock assemblages are differentiated on the basis of their internal organizations and protolithologies, as bottom to top; 1) grayish-black schists with quartz boudins and veins, 2) green schists, 3) green schists with marble blocks and/or boudins. The lower unit is originally a clastic sequence, made of shales, sandstones, cherts and calcareous clas-tics. It is t.ectonically overlain by green schists protoliths of which are volcanic and carbonate rocks. The upper unit, composed of huge mar-ble blocks and/or lenses embedded within a volcanic sequence. The protoliths of greenschist facies metamorphics are interpreted as a magmatic arc-related basinal being metamorphosed by regional dynamothermal metamorphism during pre-Permian. These meta-morphics can protolithologically be correlated with Agvanis and Yenise-hir low-grade metamorphics which all are believed to be in Carboniferous age.

URI

https://hdl.handle.net/11511/84933
https://dergipark.org.tr/tr/pub/yerbilimleri/issue/13615/164980

Journal

H.Ü. yerbilimleri

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Department of Geological Engineering, Article

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Citation Formats

F. B. Rojay, “Tectonic setting of some Paleozoic metamorphics in northern Anatolia,” H.Ü. yerbilimleri, pp. 109–118, 1997, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/84933.