سنگ‌نگاری و سنگ‌شناسی گرانیتوئیدهای A-type شرق کوه‌های میشو با نگرشی بر اهمیت ژئودینامیکی آن‌ها

Granitoidic bodies of the eastern Misho mountains (SW Marand – East Azerbaidjan) have intruded into Kahar Formation and mafic – ultramafic rocks of Misho mountains and has faulty contact with Triassic carbonate deposits. The composition of these bodies ranges from quartz monzonite to granite and alkali-granite and it is cut by porphyritic granitic and diabasic dykes. The main minerals of these bodies are pertitic alkali feldspar, quartz and Na-rich plagioclase, accompanied by lesser amounts of biotite and amphibole. In this regard, these bodies belong to hypersolvus granitoids and A2 sub-group of A-type granitoids. The parental magma of these bodies has calc-alkaline to shoshonitic characteristic and show positive anomalies of LILE and LREE, and obvious negative anomalies of Ba, Eu, and HREE. These bodies have emplaced in a post-collisional tectonic setting related to tensional movements after Hercynian orogenic phase and have formed by melting of crustal rocks