Petrography and Petrology of the Calc-Alkaline Sarıhan Granitoid (NE Turkey): An Example of Magma Mingling and Mixing

ZAFER ASLAN

Makale detayları

Petrography and Petrology of the Calc-Alkaline Sarıhan Granitoid (NE Turkey): An Example of Magma Mingling and Mixing

Yazarlar:

ZAFER ASLAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Earth Sciences 2005 Vol.14 Issue 2, pp.183-207

Belge Tipi:

Makale

Yayın Tarihi:

1/2005

Belge Dili:

Türkçe

Document ID (Org No.):

2000732755

Sıklık:

İki Aylık

eISSN:

1303-619X

pISSN:

1300-0985

Özet:

 

There are many acidic intrusions of varying age in the northern and southern zones of the eastern Pontides, NE Turkey, and the Sarıhan Granitoid is one of these. The Maastrichtian Sarıhan Granitoid was emplaced into the pre-Permo-Carboniferous Pulur Massif, generally comprising medium-grade metamorphic rocks; the Liassic Hamurkesen Formation, that begins with the Dikmetaş conglomerate and continues upward into volcano-sedimentary rocks; and the Malm-Lower Cretaceous Hozbirikyayla Formation, comprising limestone and sandy limestones. The Sarıhan Granitoid crops out in an area of approximately 40 km2, has an ellipsoidal shape, and comprises mainly quartz monzodiorite, granodiorite and lesser quartz diorite. The pluton contains volcanic and silicified limestone xenoliths and dioritic mafic microgranular enclaves. The plutonic rocks show medium-grained, poikilitic, monzonitic, anti-rapakivi and sometimes myrmekitic textures, and contain 43-64% plagioclase, 6-18% orthoclase, 10-29% quartz, 5-20% hornblende, 1-85% biotite, 1-6% opaque oxides, accessory amounts of apatite, titanite and zircon, and secondary phases of calcite, chlorite and sericite. Some textures may suggest magma mixing, whereas the presence of mafic microgranular enclaves indicates that magma-mingling processes were operative in the evolution of the pluton. The pluton has 65-67% SiO2, 1.4-3.1% MgO, 4.1-5.5% Na2O and.

 

There are many acidic intrusions of varying age in the northern and southern zones of the eastern Pontides, NE Turkey, and the Sarıhan Granitoid is one of these. The Maastrichtian Sarıhan Granitoid was emplaced into the pre-Permo-Carboniferous Pulur Massif, generally comprising medium-grade metamorphic rocks; the Liassic Hamurkesen Formation, that begins with the Dikmetaş conglomerate and continues upward into volcano-sedimentary rocks; and the Malm-Lower Cretaceous Hozbirikyayla Formation, comprising limestone and sandy limestones. The Sarıhan Granitoid crops out in an area of approximately 40 km2, has an ellipsoidal shape, and comprises mainly quartz monzodiorite, granodiorite and lesser quartz diorite. The pluton contains volcanic and silicified limestone xenoliths and dioritic mafic microgranular enclaves. The plutonic rocks show medium-grained, poikilitic, monzonitic, anti-rapakivi and sometimes myrmekitic textures, and contain 43-64% plagioclase, 6-18% orthoclase, 10-29% quartz, 5-20% hornblende, 1-85% biotite, 1-6% opaque oxides, accessory amounts of apatite, titanite and zircon, and secondary phases of calcite, chlorite and sericite. Some textures may suggest magma mixing, whereas the presence of mafic microgranular enclaves indicates that magma-mingling processes were operative in the evolution of the pluton. The pluton has 65-67% SiO2, 1.4-3.1% MgO, 4.1-5.5% Na2O and.

Makale detayları

Petrography and Petrology of the Calc-Alkaline Sarıhan Granitoid (NE Turkey): An Example of Magma Mingling and Mixing

Yazarlar: ZAFER ASLAN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Earth Sciences 2005 Vol.14 Issue 2, pp.183-207

Belge Tipi: Makale

Yayın Tarihi: 1/2005

Belge Dili: Türkçe

Document ID (Org No.): 2000732755

Sıklık: İki Aylık

eISSN: 1303-619X

pISSN: 1300-0985

Sayı

Yazarlar:

ZAFER ASLAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Earth Sciences 2005 Vol.14 Issue 2, pp.183-207

Belge Tipi:

Makale

Yayın Tarihi:

1/2005

Belge Dili:

Türkçe

Document ID (Org No.):

2000732755

Sıklık:

İki Aylık

eISSN:

1303-619X

pISSN:

1300-0985