SHRIMP U–Pb zircon ages and whole-rock geochemistry for the Şapçı volcanic rocks, Biga Peninsula, Northwest Turkey: implications for pre-eruption crystallization conditions and source characteristics

Petrography and Petrology of the Yürekli̇ (Balikesir) Volcanics: An Example of Post-Collisional Felsic Volcanism in the Biga Peninsula (Nw Turkey)

“…The Early Miocene-aged Şapçı volcanics lie above the Hallaçlar volcanics. The unit comprises andesite, trachy-andesite and their pyroclastics and is identifi ed as 21.2±09 My by K-Ar dating (Dönmez et al, 2005) and as Early Miocene by zircon SHRIMP U-Pb dating (22.72±0.19 and 22.97±0.23 My) (Aslan et al, 2017). It outcrops in the north of the study area nearly Büyük and Küçük Şapçı villages.…”

“…In this period, intrusive rocks with granitic character and volcanic rocks with andesitic, dacitic and basalt character are commonly (Okay and Tüysüz, 1999) and b) The distribution of magmatic rocks in the Biga Peninsula (modifi ed after Pehlivan et al, 2007). found. Granitic plutons and the Edincik and Beyçayır volcanic rocks represent the fi rst magmatism products in the Middle Eocene (Delaloye and Bingöl, 2000;Şengör et al, 1993;Köprübaşı and Aldanmaz, 2004;Altunkaynak and Dilek, 2006;Altunkaynak, 2007;Okay 2008;Altunkaynak et al, 2012, Erdem andAslan, 2015;Aslan et al, 2017). In the Oligocene-Early Miocene period granitic intrusive rocks and genetically related volcanic rocks are found in the region (Altunkaynak and Yılmaz, 1999;Duru et al, 2004;Özgenç and İlbeyli, 2008;Altunkaynak and Dilek, 2006;Karacık et al, 2008;Akay, 2009;Prelević et al, 2012;Gülmez et al, 2013;Aslan et al, 2017).…”

Gölköy Yöresi̇ (Ordu, Kd Türki̇ye) Eosen Yaşli I-Ti̇pi̇ Şoşoni̇ti̇k Plütonlarin Mi̇neral Ki̇myasi, Tüm-Kayaç Jeoki̇myasi Ve Petroloji̇si̇

“…The İzmir-Ankara-Erzincan suture zone ( Figure 1a) is bounded by the Sakarya zone to the north and the Tauride-Anatolide block to the south (Şengör and Yılmaz, 1981;Yılmaz, 1990;Okay and Tüysüz, 1999). NW Anatolia is an important belt within the Alpine-Himalayan orogenic belt where magmatic activity is observed together with tectonic events (Aldanmaz et al, 2000;Altunkaynak and Genç, 2008).Thus, there are many studies performed on the general geology and petrology of the NW Anatolian Region (Bingöl, 1976;Ercan, 1979;Şengör and Yılmaz, 1981;Bingöl et al, 1982;Ercan and Günay, 1984;Yılmaz, 1990;Harris et al, 1994;Okay et al, 1996;Genç, 1998;Altunkaynak and Genç, 2008;Yılmaz et al, 2001;Altunkaynak and Dilek, 2013;Erdem, 2015;Aslan et al, 2017).…”

“…Granitic plutons and the Edincik and Beyçayır volcanic rocks represent the fi rst magmatism products in the Middle Eocene (Delaloye and Bingöl, 2000;Şengör et al, 1993;Köprübaşı and Aldanmaz, 2004;Altunkaynak and Dilek, 2006;Altunkaynak, 2007;Okay 2008;Altunkaynak et al, 2012, Erdem andAslan, 2015;Aslan et al, 2017). In the Oligocene-Early Miocene period granitic intrusive rocks and genetically related volcanic rocks are found in the region (Altunkaynak and Yılmaz, 1999;Duru et al, 2004;Özgenç and İlbeyli, 2008;Altunkaynak and Dilek, 2006;Karacık et al, 2008;Akay, 2009;Prelević et al, 2012;Gülmez et al, 2013;Aslan et al, 2017). In the Biga Peninsula, Oligocene-aged volcanic products include the andesitic Yeniköy, acidic Atikhisar, basaltic Saraycık, and andesitic Bağburun and Hallaçlar volcanics (Dönmez et al, 2005).…”

“…The topic of the study of the Yürekli volcanic rocks is located in the west of the Sakarya zone tectonically, 45 km southwest of Balıkesir (Figure 1b). There are many studies about Tertiary magmatism in the region, with the majority related to andesitic volcanism and granitic plutonic rocks (Ercan et al, 1995;Aldanmaz et al, 2000;Dönmez et al, 2005;Altunkaynak andGenç, 2008, Karacık et al, 2008;Prelević et al, 2015;Erdem, 2015;Aslan et al, 2017). There are limited studies about the Yürekli volcanics (Duru et al, 2004;Pehlivan et al, 2007) with studies only performed about general geology and petrography due to the small outcrop area.…”