Hüseyin KURT, Ali Müjdat ÖZKAN, Kerim KOÇAK

Orta Anadolu'da Konya'nın Batısındaki Dalmabatma ile İlişkili Volkanik Kayaçların Jeolojisi, Petrografisi, ve Jeokimyası

Konya'nın KB'sı Neojen yaşlı volkanik breş, aglomera, tüfit, tüf ve andesit, dasit ve bazaltik andezit lavlarıyla kaplıdır. Bazaltik andezitler yaklaşık olarak % 7-10 olivin, %3-5 klinopiroksen, %5-10 ortopiroksen, %60-70 plajiyoklaz ve % 5-10 opak mineral fenokristalleri içerirken andezitik lavlar % 50-60 plajiyoklaz, % 10-15 hornblende, %5 biyotit, %2 klinopiroksen, %1 sanidin, %1 kuvars ve % 3 opak mineral oluşmaktadır. Dasitik kayaçlar %35-40 plajiyoklaz, % 10-15 kuvars, %15-20 hornblend, %10-12 biyotit, % 2-3 opak mineral, %3 sanidin içerirler Dasit ve andezitik kayaçlar salınım zonlanma ve elek dokusuna sahiptirler.

Anahtar Kelimeler:

Kalkalkalin, Dalma-Batma, Orta Anadolu, Volkanizma, Neojen

Geology, Petrography and Geochemistry of the Subduction Related Volcanic Rocks, West of Konya, Central Anatolia

The northwest of Konya is covered by Neogene volcanic breccias, agglomerates, tuffites, tuffs and lavas of andesite, dacite and basaltic andesite. The basaltic andesites contain about 7-10% of olivine, 3-5 % clinopyroxene, 5-10 % orthopyroxene, 60-70 % plagioclase and 5-10 % opaque minerals while the andesitic lavas include 50-60 % plagioclase, 10-15 % hornblende, 5% biotite, 2 %, clinopyroxene, 1 % sanidine, 1 % quartz and 3 % opaque minerals. Main constituents in the dacitic rocks are plagioclase (35-40%), quartz (10-15 %), hornblende (15-20 %), biotite (10-12 %), opaque minerals (2-3%) and sanidine (3 %). The plagioclase in dacites and andesitic rocks have oscillatory zoning and sieve texture.

Keywords:

Calcalkaline, Subduction, Central Anatolia, Volcanism, Neogene,

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