Petrology and geochemistry of intrusive body of iron deposit of Sarab-3, east of Takab-north west of Iran
The Sarab-3 intrusive bodyis located in the NW of Iran, in Sanandaj-Sirjan zone and in the east of Takab city. Based on field observations as well as petrographic features, the lithologic composition of intrusion (Miocene age) ranges within the diorite-leucodiorite, monzodiorite, quartz monzodiorite...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
University of Isfahan
2016-09-01
|
| Series: | پترولوژی |
| Subjects: | |
| Online Access: | http://ijp.ui.ac.ir/article_21023_18584e26b93ec9a1bccbc1acb5e0ffb0.pdf |
| Summary: | The Sarab-3 intrusive bodyis located in the NW of Iran, in Sanandaj-Sirjan zone and in the east of Takab city. Based on field observations as well as petrographic features, the lithologic composition of intrusion (Miocene age) ranges within the diorite-leucodiorite, monzodiorite, quartz monzodiorite, granodiorite and granite. In terms of geochemical characteristics, the rocks studied, are I-type, with calc-alkaline affinity and meta-aluminous character. Enrichment of LILE (K, U, Sr, Ce, Th, Pb, Ba) and LREE relative to HFSE (Zr, Y, Ti, P, Nb) and HREE, low Ce / Pb and Nb / U ratios and high Ba / Nb reveal that the rocks under study were originated in an active continental margin subduction-related tectonic setting. The negative anomalies of Ti, Nb and P on the spider diagram also confirm this fact. Low ratios of (Na2O + K2O / (FeOt + MgO + TiO2) and (Al2O3 / FeOt + MgO + TiO2) along with low Rb/Sr concentration (< 0.6) propose that the Sarab-3 intrusive rock is derived from a meta-basaltic source. |
|---|---|
| ISSN: | 2228-5210 2322-2182 |