Beyreli - Çamiçi (Hadim-Konya) Dolayındaki Jura Yaşlı Dedebeleni Formasyonu Dolomitlerinin Sedimantolojik ve Jeokimyasal İncelenmesi

Ali Müjdat ÖZKAN, Abdullah MUTLU
2.605 585

Öz


Bu çalışmanın amacı Konya güneybatısındaki Hadim ilçesinin Beyreli Köyü çevresinde yer alan Dedebeleni formasyonuna (Jura) ait dolomitlerin petrografik ve jeokimyasal bakımdan sedimanter özelliklerinin belirlenmesine yöneliktir. Orta Toroslarda bulunan Jura yaşlı Dedebeleni formasyonu kireçtaşı, çamurtaşı, dolomitik kireçtaşı ve dolomitten oluşmaktadır. Dedebeleni formasyonu mikrofasiyesi: vaketaşı, istiftaşı, kristalin kireçtaşı ve dolosparit şeklindedir. Dedebeleni formasyonu Sr içeriği (erken dolomitler 73-88 ppm ve geç dolomitler 58-77 ppm) sığ ve derin gömülme dolomitleriyle tutarlıdır. Yine, Dedebeleni formasyonu Na içeriği (erken dolomitler 148 ppm ve geç dolomitler 74-148 ppm) de sığ ve derin gömülme dolomitleriyle tutarlıdır. Dedebeleni formasyonu erken diyajenetik dolomitlerinin δO18 izotopik bileşimleri ‰ -2,37 ile -3,35 normal deniz suyu ya da evaporatif hafif konsantre (yoğun) deniz suyundan oluşumu  önermektedir. Geç diyajenetik dolomitlerin izotopik bileşimleri ise ‰ -4,39 ile -5,9 yükseltilmiş sıcaklıklarda havzasal tuzlu sulardan oluşumu önermektedir. Dedebeleni formasyonu dolomitlerindeki δC13 değerleri erken diyajenetik; ‰ +1,29 ile +2,65; geç diyajenetik; ‰ +0,79 ile +3,14 biyojenik ve non-biyojenik kaynağı ifade etmektedir. Sonuç olarak Dedebeleni formasyonuna ait dolomitler sığ gömülme ortamında erken diyajenetik ve orta gömülme ortamında geç diyajenetik olarak oluşmuştur.

Anahtar kelimeler


Beyreli, Hadim, Dolomit, Petrografi, Jeokimya

Tam metin:

1-18

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