Writers : Kohansal, Reza; Zolfaghari, Sedigheh
Refference : 27th Symposium on geosciences and the 13th symposium on geological society of Iran-Tehran
Publishing Year : 1388

Abstract :

Davarzan area is located between Sabzevar and Shahroud cities and are showing a part of the west Ophiolitic Sabzevar zone. These rocks facieses are parts of demonstrated zone that in some parts have interrupted by subvolcanic rocks with composition of trachyandesite and quartztrachyandesite. Founding xenoliths of host rock in these subvolcanic facieses inferred to kinds of pyroclastic and harzburgite before. The new investigation in this field cause to find and representation of xenoliths in subvolcanic facieses with composition of gabbroic, hornblend gabbroic and monzodiorite. The performed studies about stratigraphy and petrography on these xenoliths significant gradually evolve from kinds of mafic to intermediate and acidic that they indicate partial melting and differentiation crystallization of these rocks. Keywords: ophiolite, subvolcanic, xenolith, hornblend gabbro, melting, differentiation.

Subject List : xenolith, Andesit