Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey)

ŞEN, Cüneyt; ARSLAN, Mehmet; SIEBEL, Wolfgang; KAYGUSUZ, Abdullah

Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey)

Abdullah KAYGUSUZ, (Gümüşhane Üniversitesi, Jeoloji Mühendisliği Bölümü, Gümüşhane, Türkiye)

Mehmet ARSLAN, (Karadeniz Teknik Üniversitesi, Jeoloji Mühendisliği Bölümü, Trabzon, Türkiye)

Wolfgang SIEBEL, (Institute of Geosciences, Universität Tübingen, Wilhelmstrasse 56, D−72074 Tübingen, Germany)

CÜNEYT ŞEN (Karadeniz Teknik Üniversitesi, Jeoloji Mühendisliği Bölümü, Trabzon, Türkiye)

Turkish Journal of Earth Sciences

1 0

Yıl: 2011 Cilt: 20 Sayı: 1 Sayfa Aralığı: 137 - 159 Metin Dili: İngilizce İndeks Tarihi: 29-07-2022

Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey)

Öz:

Doğu Pontidlerde Eosen yaşlı Torul volkanitlerinin ana, iz element, K-Ar yaş ve Sr-Nd izotop verileri incelenmiştir. İncelenen volkanitler, bazaltik andezit, andezit, trakiandezit ve az oranda da trakidasit ve bunların piroklastiklerinden oluşurlar. Volkanitler plajiyoklas (An2–44), hornblend (Mg#= 0.78–0.98), klinopiroksen ($Wo _{43-46} En _{41-43} Fs _{10-15}$), biyotit, kuvars ve az oranda da sanidin fenokristallerinden oluşurlar. Hornblendlerdeki K-Ar yaşları, 43.99 (±2.59) – 33.45 (±2.32) My aralığında olup, Torul volkanitlerinin Orta–Geç Eosen zamanında oluştuklarını göstermektedir. Torul volkanitleri kalk-alkalen karakterli olup orta–yüksek K içeriğine sahiptirler. Volkanitler büyük iyon yarıçaplı elementler (LILE) ve hafif hafif nadir toprak elementlerce (LREE) zenginleşmiş, yüksek çekim alanlı elementlerce (HFSE) tüketilmişlerdir. Kondrite normalize edilmiş nadir toprak element dağılımları, düşük–orta derecede zengileşmeyle konkav şekilli olup ($La _{cn}/Lu _{cn}$= 4.0–9.8), volkanitleri oluşturan kayaçların benzer kaynaktan itibaren oluştuklarını düşündürmektedir.$ ^ {87}Sr/^ {86}Sr$(i) değerleri 0.70457–0.70511 arasında olup $^ {143}Nd/^ {144}Nd$(i) değerleri 0.70457–0.70511 arasındadır. Volkanitlerin gelişiminde başlıca fraksiyonel kristallenme, daha az oranda da kabuksal kirlenme ± magma karışımı rol oynamıştır. Tüm bu veriler, volkanitlerin köken magma(lar)sının muhtemelen daha önceki yitim akışkanları tarafından metasomatizmaya uğratılmış zenginleşmiş bir üst manto kaynağından, çarpışma sonrası jeodinamik bir ortamda türeyebileceklerini ifade etmektedir.

Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	KAYGUSUZ A, ARSLAN M, SIEBEL W, ŞEN C (2011). Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). , 137 - 159.
Chicago	KAYGUSUZ Abdullah,ARSLAN Mehmet,SIEBEL Wolfgang,ŞEN Cüneyt Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). (2011): 137 - 159.
MLA	KAYGUSUZ Abdullah,ARSLAN Mehmet,SIEBEL Wolfgang,ŞEN Cüneyt Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). , 2011, ss.137 - 159.
AMA	KAYGUSUZ A,ARSLAN M,SIEBEL W,ŞEN C Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). . 2011; 137 - 159.
Vancouver	KAYGUSUZ A,ARSLAN M,SIEBEL W,ŞEN C Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). . 2011; 137 - 159.
IEEE	KAYGUSUZ A,ARSLAN M,SIEBEL W,ŞEN C "Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey)." , ss.137 - 159, 2011.
ISNAD	KAYGUSUZ, Abdullah vd. "Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey)". (2011), 137-159.

APA	KAYGUSUZ A, ARSLAN M, SIEBEL W, ŞEN C (2011). Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). Turkish Journal of Earth Sciences, 20(1), 137 - 159.
Chicago	KAYGUSUZ Abdullah,ARSLAN Mehmet,SIEBEL Wolfgang,ŞEN Cüneyt Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). Turkish Journal of Earth Sciences 20, no.1 (2011): 137 - 159.
MLA	KAYGUSUZ Abdullah,ARSLAN Mehmet,SIEBEL Wolfgang,ŞEN Cüneyt Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). Turkish Journal of Earth Sciences, vol.20, no.1, 2011, ss.137 - 159.
AMA	KAYGUSUZ A,ARSLAN M,SIEBEL W,ŞEN C Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). Turkish Journal of Earth Sciences. 2011; 20(1): 137 - 159.
Vancouver	KAYGUSUZ A,ARSLAN M,SIEBEL W,ŞEN C Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey). Turkish Journal of Earth Sciences. 2011; 20(1): 137 - 159.
IEEE	KAYGUSUZ A,ARSLAN M,SIEBEL W,ŞEN C "Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey)." Turkish Journal of Earth Sciences, 20, ss.137 - 159, 2011.
ISNAD	KAYGUSUZ, Abdullah vd. "Geochemical and Sr-Nd isotopic characteristics of post-collisional calc-alkaline volcanics in the eastern Pontides (NE Turkey)". Turkish Journal of Earth Sciences 20/1 (2011), 137-159.