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Full-Text Articles in Physical Sciences and Mathematics
Geochemistry And Source Characteristics Of Dehsard Mafic Volcanic Rocks In The Southeast Of The Sanandaj-Sirjan Zone, Iran: Implications For The Evolution Of The Neo-Tethys Ocean, Mohammadali Nazemei, Mohsen Arvin, Sara Dargahi
Geochemistry And Source Characteristics Of Dehsard Mafic Volcanic Rocks In The Southeast Of The Sanandaj-Sirjan Zone, Iran: Implications For The Evolution Of The Neo-Tethys Ocean, Mohammadali Nazemei, Mohsen Arvin, Sara Dargahi
Turkish Journal of Earth Sciences
The Late Jurassic-Early Cretaceous Dehsard mafic volcanic rocks crop out in the southeastern Sanandaj-Sirjan Zone (SSZ), composed primarily of basalts and basaltic andesite with subordinate dolerite. They are influenced to some degree by hydrothermal alteration under zeolite-greenschist facies. Using fairly immobile trace elements, the mafic volcanic rocks show subalkaline (tholeiitic) affinities. They commonly have similar designs with somewhat strong enrichment in light rare earth elements (LREEs) and large ion lithophile elements (LILEs) and depletion in high field strength elements (HFSEs; e.g., Nb, Ta, Ti) and nearly flat heavy rare earth element (HREE) patterns. The negligible or absence of negative Eu …
Metamorphism, Magmatism, And Exhumation History Of The Tavşanlı Zone, Nw Turkey: New Petrological Constraints, Şenel Özdamar, Gürsel Sunal, Muhterem Demi̇roğlu, Cenk Yaltirak, Mehmet Zeki̇ Bi̇llor, Stoyan Georgiev, Willis Hames, Istvan Dunkl, Hali̇l Can Aydin
Metamorphism, Magmatism, And Exhumation History Of The Tavşanlı Zone, Nw Turkey: New Petrological Constraints, Şenel Özdamar, Gürsel Sunal, Muhterem Demi̇roğlu, Cenk Yaltirak, Mehmet Zeki̇ Bi̇llor, Stoyan Georgiev, Willis Hames, Istvan Dunkl, Hali̇l Can Aydin
Turkish Journal of Earth Sciences
The Tavşanlı Zone (TZ) is a high-pressure/low-temperature metamorphic belt representing subduction and exhumation between the Sakarya Zone and the Afyon-Bolkardağ Zone in western Anatolia. This paper provides new and precise geological data including whole-rock and mineral chemistry, phengite 40Ar/39Ar ages, zircon laser ablation ICP-MS U-Pb, and apatite (U-Th)/He thermochronological information for a region of the Sivrihisar metamorphic complex that has been less studied than other regions of the TZ. This region comprises Permo-Carboniferous metamorphic units, Eocene granodiorite and microgranodiorite, terrestrial clastics, and Holocene alluvium. The mineral assemblage of the granite-gneiss contains quartz, plagioclase, K-feldspar, microcline, muscovite, and rare biotite and …