<div>
<p>Basaltic activities&#160; developed&#160; extensively in central and western Anatolia since middle &#8211;Miocene to quaternary time, the most primitive lavas are&#160; situated at&#160; the eastern end of&#160; central Anatolia, (southern Sivas) and the most recent ones&#160; are situtated in central (basaltic cinder cones at south of Hasanda&#287;) and also in western Anatolia (Kula region),&#160; Among those&#160; primitive recent&#160; lavas, mantle sources that are responsible for the generation of basaltic rocks is&#160; still a matter of a debate. &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</p>
<p>Previous studies suggested&#160; that&#160; spinel peridotite source&#160;&#160; is the dominant source&#160; component&#160; for many of the basaltic rocks which are situated in several different locations in central Anatolia, including, Erciyes and Hasanda&#287; stratovolcanoes,&#160; Erkilet, Develida&#287;, Karap&#305;nar vents and Salanda fissure eruptions while Sivas fissure basalts in the east, &#160;Gediz and Kula&#160; basalts in the west, were&#160; derived&#160; mostly&#160; from&#160; the&#160; garnet peridotite sources, but , the &#160;specific&#160; incompatible element ratios&#160; and the melting model based on Rare Earth Elements obviously&#160; indicate that&#160; these basaltic rocks could not be solely generated&#160; from&#160; the garnet- spinel transition zone, &#160;&#160;instead another mantle source component need to be involved&#160; in the generation of the basaltic rocks.</p>
<p>Tb/Yb(N) and Zn/Fe&#160; ratios provide significant values&#160; &#160;in order to constraint for the magmas&#160; generated from the asthenosphere.&#160; Tb/Yb(N) ratio seperates&#160; garnet &#8211; spinel transition [1]&#160; and Zn/Fe&#160; ratio&#160; displays separation between the peridotite-derived (Zn/Fe <12, [2,3]) and pyroxenite-derived (13-20 [2,3]) melts. &#160;Zn/Fe, as well as&#160; the&#160; Tb/Yb(N) ratios and the melting model display&#160; that single spinel&#160; source&#160;&#160; component&#160; is not solely&#160;&#160; responsible for&#160; the generation of&#160; the basaltic rocks,&#160;&#160; pyroxenite&#160; source domain&#160; should&#160;&#160;&#160; also&#160; be involved in&#160; &#160;during&#160; the genesis of these rocks as well, besides, the &#160;contributions from &#160;the both of the&#160; mantle source domains also explain the&#160; depleted&#160; magma nature that is observed&#160; in some of recent basaltic rocks ( e.g, Salanda &#160;and &#160;Hasanda&#287;&#160; volcanic&#160; systems) which is diffrent &#160;from the dominated alkaline character, &#160;generally observed&#160; as&#160; the &#160;&#160;final products&#160; of central Anatolian &#160;magmatism &#160;&#160;</p>
<p><em>1.Wang et al., 2002, J.Geophys.Res.vol:107,ECV 5 1-21</em></p>
<p><em>2 .Le Roux, et al.,2011,EPSL, vol:307, 395-408</em></p>
</div><p><em>3. Ducea, et al.,2013, GEOLOGY, Vol:41, 413-417</em></p><p><em>This study&#160;&#160; is financially supported by Hacettepe University, BAB project no: FHD-2018-17283</em></p>