Anatolia is characterised by a complex geodynamic evolution, mirrored by a wide spectrum of magmatism. Here, we investigated the timing and the geochemical/isotopic characters of the Miocene to Pliocene volcanism of Sivas–Malatya Region (Central Eastern Anatolia), and its relationships with local and regional tectonics. Na-alkaline basaltic lavas were emplaced during middle Miocene at Sivas (16.7–13.1 Ma), in the North, whilst transition from calc-alkaline to Na-alkaline rocks is observed at Yamadağ and Kepez Dağ volcanic complexes. Calc-alkaline products erupted during early to middle Miocene, and more precisely from 19.5 to 13.6 Ma at Yamadağ and from 16.4 to 13.5 Ma at Kepez Dağ, with final Na-alkaline activity of the Arguvan volcanic field lasting till late Miocene (15.7–10.6 Ma). Volcanism renewed during the Pliocene in the Kangal (5.9–4.0 Ma) volcanic field with the emission of K-alkaline igneous rocks. Mafic calc-alkaline and Na-alkaline rocks partially overlap in age but can be easily distinguished by their petrochemical characters. Mafic calc-alkaline igneous rocks show typical subduction-related petrological and geochemical affinities. They are both two-pyroxene or clinopyroxene and amphibole-bearing rocks, characterised by high LILE/HFSE values, with variable ⁸⁷Sr/⁸⁶Sr_i (0.70396–0.70539) and ¹⁴³Nd/¹⁴⁴Nd_i (0.51260–0.51287). Mafic Na-alkaline igneous rocks are characterised by big olivine phenocrysts and show intraplate geochemical flavours, although some LILE depletion with respect to HFSE as well as variable ⁸⁷Sr/⁸⁶Sr_i (0.70347–0.70553) and ¹⁴³Nd/¹⁴⁴Nd_i (0.51261–0.51291) isotopic compositions are present. These characteristics are suggestive for the occurrence, at some stage of their genesis, of a possible interaction with subduction-related reservoirs. The Kangal K-alkali basalts still show intraplate-like petrological and geochemical affinities with LILE/HFSE ratios similar to those of the Miocene Na-alkaline rocks, and largely variable ⁸⁷Sr/⁸⁶Sr_i (0.70425–0.70520) and ¹⁴³Nd/¹⁴⁴Nd_i (0.51262–0.51277) isotopic compositions, overlapping the arrays observed in the earlier stages of volcanism. A general transition from calc-alkaline to Na-alkaline volcanic rocks is observed with time, according to the evolution of the geodynamics of the Anatolia region. Early to middle Miocene calc-alkaline magmas were derived by partial melting of the mantle wedge delimited by the subduction of the last oceanic branch of Neotethys. The Na-alkaline magmas, on the other hand, were generated within the asthenospheric mantle beneath the slab and migrated through slab tears into the mantle wedge where they mixed with subduction-related components. The subduction-related component decreased with time and transitional magmas are found in the youngest activity of Yamadağ and Kepez Dağ, shortly followed by clear within-plate lavas formed in the Arguvan volcanic field. The appearance of the youngest K-alkaline volcanic rocks in the Kangal basin represents an abrupt change in the magma supply at depth, although continental crustal contamination en-route to the surface played an important role in their genesis.

安纳托利亚的特征是复杂的地球动力学演化，并被广泛的岩浆作用所反映。在这里，我们研究了锡瓦斯－马拉蒂亚地区（中部安纳托利亚中部）中新世至上新世火山活动的时间，地球化学/同位素特征，及其与局部和区域构造的关系。在中新世中期，在北部的锡瓦斯（16.7-13.1 Ma）处放置了碱性碱性熔岩，而在山大和凯佩兹·达格火山复合体中观察到了钙碱性至钠碱性过渡。钙碱性产物在中新世早期到中期喷发，更确切地说是在山田县从19.5Ma到13.6Ma，在KepezDağ从16.4Ma到13.5Ma爆发，最终Arguvan火山场的Na碱性活动一直持续到中新世晚期（15.7–10.6）嘛）。冈古尔的上新世时期火山爆发（5.9–4）。0 Ma）具有K碱性火成岩散发的火山场。镁铁质钙碱性和钠碱性岩石在年龄上部分重叠，但可以通过其岩石化学特征轻松区分。镁铁质钙碱性火成岩具有典型的俯冲相关的岩石和地球化学亲和力。它们都是二-辉石或斜辉石和角闪石的岩石，具有较高的LILE / HFSE值，且变化很大。⁸⁷ Sr / ⁸⁶ Sr _i（0.70396–0.70539）和¹⁴³ Nd / ¹⁴⁴ Nd _i（0.51260–0.51287）。镁铁质钠碱性火成岩的特征是橄榄石大，并显示板内地球化学特征，尽管HFSE的LILE损耗以及变量⁸⁷ Sr / ⁸⁶ Sr _i（0.70347–0.70553）和¹⁴³ Nd / ¹⁴⁴ Nd _i（0.51261-0.51291）存在同位素组成。这些特征暗示了它们在成因的某个阶段可能与俯冲相关的储层发生了相互作用。康加尔钾碱玄武岩仍显示出板内岩石和地球化学亲和力，LILE / HFSE比与中新世钠碱性岩相似，并且变化很大，为⁸⁷ Sr / ⁸⁶ Sr _i（0.70425–0.70520）和¹⁴³ Nd / ¹⁴⁴钕_我（0.51262-0.51277）同位素组成，与火山早期发现的阵列重叠。根据安纳托利亚地区地球动力学的演变，随着时间的推移，人们观察到了从钙碱性火山岩到钠碱性火山岩的总体过渡。中新世早期至中期的钙碱性岩浆是由新特提斯最后一洋分支的俯冲划定的地幔楔部分融化而产生的。另一方面，钠碱性岩浆是在板状下部的软流圈地幔中产生的，并通过板状裂隙迁移到地幔楔中，在那里它们与俯冲相关的成分混合在一起。与俯冲有关的成分随时间而减少，并且在Yamadağ和KepezDağ的最年轻活动中发现了过渡岩浆，不久之后，在Arguvan火山场中形成了清晰的板内熔岩。康加尔盆地最年轻的K碱性火山岩的出现代表了深部岩浆供应的突然变化，尽管途中地表的大陆地壳污染在其成因中起着重要作用。