克罗地亚东北部斯拉沃尼亚山脉Tisia巨型单元南部绿榴石片岩中阿尔卑斯变质作用的相平衡、地温气压和同位素年龄限制( Phase equilibrium, geothermobarometric and xenotime age dating constraints on the Alpine metamorphism recorded in chloritoid schists from the southern part of the Tisia Mega-Unit (Slavonian Mts., NE Croatia) )

D Balen P Horváth F Finger… Experimental/ Earth crust geochronology mica minerals phase equilibrium quartz rocks/ chloritoid schists Slavonian Mts. Devonian Hercynian Semimetamorphic Complex Permian Hercynian Semimetamorphic Complex Tisia Mega-Unit outcrops NE Croatia Kutjevacka Rijeka transect Mt. Papuk chloritoid-bearing metapelitic lithology chloritoid-bearing metapsammitic lithology minor K-feldspar plagioclase albite opaque minerals pyrophyllite accessory zircon rutile Th-U-Pb age dating xenotime grains K-white mica+chlorite+quartz matrix peak metamorphic conditions Alpine chloritoid-forming event phengite barometry chlorite-chloritoid thermometry chloritoid isopleths KFMASH quantitative phase diagram chlorite isopleths post-tectonic character rosette-shaped chloritoids lath-shaped chloritoids foliations Yb-rich xenotime core domain low-grade metamorphic phase upper continental crustal felsic rocks Slavonian Mountains prograde Alpine metamorphic event phase equilibrium geothermobarometric

斯拉沃尼亚期含氯片岩属于泥盆纪-二叠纪半变质杂岩的基部，不仅在克罗地亚Tisia大单位露头中，而且在更广泛的地区都是非常罕见的岩性。在Kutjevacka Rijeka样带（Mt.Papuk）调查的露头包括含氯石的偏岩和偏岩岩性。均含有钾白云母、绿泥石、氯石(10～15vol.%)、石英和少量钾长石、斜长石（钠长石）、不透明矿物和叶蜡石，还有副锆石、金红石、磷闪石。对K白云母+绿泥石+石英基体中的Xentime晶粒和在类氯石中发现的包裹体进行了Th-U-Pb年龄测年，平均年龄为120+或-36Ma。根据多硅石气压、绿泥石-绿泥石温度计和KFMASH定量相图中绿泥石和绿泥石等值线的交点，阿尔卑斯山绿泥石形成事件的峰值变质条件达到3.5-4kbar和340-380℃。岩石中两种叶理的板条状和玫瑰花结状类氯石的后构造特征，以及在富Yb异时核域(s)上获得的219+或-81Ma的较老年龄，暗示了较老的低级变质相(s)的可能存在。氯石片岩的化学特征具有上大陆地壳长英质岩石作为潜在原岩的特征，可能是附近斯拉夫期MTS的Papuk杂岩的长英质岩石。本文对斯拉沃尼亚山脉含氯石的低品位变质岩的研究结果清楚地表明，进积的高寒变质事件对Tisia巨型单元南部的演化具有比以往更重要的影响。

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