DENİZEL KAYNAK KAYALARDA ANA VE İZ ELEMENT ZENGİNLEŞMELERİNE TÜRKİYE’DEN BİR ÖRNEK: AKKUYU FORMASYONU (ORTA TOROSLAR)

Öz

Orta Toroslar’ın Antalya kesiminde yüzlek veren Üst Jura yaşlı Akkuyu Formasyonu kireçtaşı litolojisinde olup,Corg değerleri ortalama % 1.92 wt’dir. Corg değerleri kireçtaşları için kaynak kaya olarak kabul edilen ortalama% 0.3 wt’lük standart değerden 6.4 kez daha yüksektir. Akkuyu Formasyonuna ait organik maddece zenginkireçtaşı örneklerinde 9 adet ana element ile 38 adet iz element incelemesi yapılmıştır. Belirlenen ana ve izelementler anoksik/öksinik koşullarda depolanmış olan Peru Kıyısal Şelfi Sedimanları, Namibya (Afrika) KıyısalŞelfi Sedimanları, Akdeniz Sapropelleri, Karadeniz Sapropelleri, Senomaniyen/Turoniyen Demerara YükselimiAnoksik Sedimanları ile Senomaniyen/Turoniyen Gubbio Anoksik Sedimanları yanında ortalama karbonatkayalar ve şeyllere ait ana ve iz element ortalama bollukları ile kıyaslanmıştır. Akkuyu Formasyonunda enönemli zenginleşmeler Rb, U, Ba, Cu, Ni, Cr, As, V, Zn, Sb, Co, Mo, Cd elementlerinde olmuştur. AkkuyuFormasyonuna ait ana elementlerden Na, Ti, K, P, Si, Fe ve Mg’un zenginleşme aralıkları en küçük 0.003 ve enyüksek 1.70 arasında değişmekte olup, Upwelling sedimanları, Sapropeller ve Senomaniyen/Turoniyen (C/T)siyah şeyl örneklerinin zenginleşme aralıklarından daha küçüktür.

Anahtar Kelimeler

• Akkuyu formasyonu, Orta Toroslar, element zenginleşmeleri, anoksik ortam.

Kaynakça

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