سنگ‌زایی، جایگاه تکتونوماگمایی و پتانسیل کانی سازی گرانیتوییدهای ده سلم، ‏ بلوک لوت، خاور ایران‏

The dehsalm porphyritic granitoids belong to the lut block volcanic-plutonic belt in east - central iran. the intrusive rocks range in ‎composition from gabbro - diorite to granite and can be classified as high-k calc alkaline to shoshonitic volcanic arc granites. elevated ‎contents of mo, cu, au, pb, zn occur in silica veins within bt - px - quartz monzonite and hbl - monzonite. the trend of major oxides on ‎harker diagrams point to the crystal fractionation of ca - plagioclase and mafic minerals. primitive mantle - normalized trace element spider ‎diagram display strong enrichments in lile such as‏ ‏rb, sr, ba, zr, cs and depletions in some high field strength elements (hfse) e.g. nb,‎‏ ‏p and y. on chondrite - normalized plots, display significant lree enrichments, high la/yb = 21.5-31 and the lack of eu. on the basis of ‎sr/y and la/yb ratios, dehsalm intrusives cover characteristic features of adakites and (87sr/86sr)i and ?ndi isotope ratios range from ‎‎0.70469 to 0.70505 and from +1.5 to +2.5 respectively, and show that the source is related to the mantle melts contaminated slightly by the ‎crustal materials. they are classified into the magnetite series granitoids and have high mineralization potential for cu-mo-au porphyry type ‎deposits. two-sided asymmetric subduction explains all the tectonic and magmatic occurrences and the mineralization of porphyry type ‎deposits within the lut block during the tertiary. ‎