New insights for the mantle source components of the most primitive recent basaltic rocks from central and western Anatolia: Evidences for the involvement of pyroxenite and the peridotite source domains
Authors: Kurkcuoglu Biltan , Yurur Tekin 
Published: March 2020

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