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Turkish Journal of Earth Sciences

1998

Fractional crystallization

Articles 1 - 2 of 2

Full-Text Articles in Physical Sciences and Mathematics

Fractional Crystallization And Magma Mingling/Mixing Processes In The Monzonitic Association In The Sw Part Of The Composite Yozgat Batholith (Şefaatli-Yerköy, Sw Yozgat), Si̇bel Tatar, Durmuş Boztuğ Jan 1998

Fractional Crystallization And Magma Mingling/Mixing Processes In The Monzonitic Association In The Sw Part Of The Composite Yozgat Batholith (Şefaatli-Yerköy, Sw Yozgat), Si̇bel Tatar, Durmuş Boztuğ

Turkish Journal of Earth Sciences

The Yozgat batholith takes place in the passive margin of the Anatolide-Pontide convergence system. It includes; syn-collisional S-type, two-mica granites; post-collisional I-type, calcalkaline monzonitic association, and post-collisional, M-type, tholeiitic gabbroic/dioritic association. Among these associations, the monzonitic association is also subdivided into five mapable units such as Cankılı monzogabbro/monzodiorite, Akçakoyunlu quartz monzodiorite, Adatepe quartz monzonite, Yassiagil monzogranite and Karakaya monzogranite. All these subunits, except the Karakaya monzogranite, include K-feldspar megacrysts. These five subunits represent some evidence of fractional crystallization (FC) and magma mingling/mixing processes by means of field, mineralogical-petrographical and geochemical characteristics. There is a good zonation in the field that …


The Coexistence Of The Silica Oversaturated (Alkos) And Undersaturated Alkaline (Alkus) Rocks In The Kortundag And Baranadag Plutons From The Central Anatolian Alkaline Plutonism, E Kaman/Nw Kırşehir, Turkey, Nazmi̇ Otlu, Durmuş Boztuğ Jan 1998

The Coexistence Of The Silica Oversaturated (Alkos) And Undersaturated Alkaline (Alkus) Rocks In The Kortundag And Baranadag Plutons From The Central Anatolian Alkaline Plutonism, E Kaman/Nw Kırşehir, Turkey, Nazmi̇ Otlu, Durmuş Boztuğ

Turkish Journal of Earth Sciences

Baranadağ and Kortundağ plutons, outcropping in the Kaman-Kırşehir region, constitute the important members of the Central Anatolian post-collisional alkaline plutonism. The Baranadağ pluton comprises only one lithodem called Baranadağ quartz monzonite, whereas, the Kortundağ pluton consists of four mapable units such as Hamit quartz syenite, Durmuslu nepheline-nosean-melanite porphyritic syenite, Bayındır nepheline-cancrinite syenite, and Çamsarı quartz syenite. Among these units, the Baranadağ quartz monzonite and Hamit quartz syenite cut the metamorphics of the Kırşehir Block. On the other hand, Durmuslu, Bayindir and Çamsarı are emplaced in both the Hamit quartz syenite and the metamorphics. The Baranadağ quartz monzonite, Hamit quartz syenite …