Abstract
Alvand granitoid complex with emplacement age upper to middle Jurassic (153-167 Ma) in Sanandaj-Sirjan zone, into intruded Hamedan schistes. This complex is located with 40 km length and 10 km width in south and west Hamedan. Alvand porphyroid granitoids based on lithological composition are granodiorite, monzogranite, syenogranite and alkali-feldspar granite. Based on mineralogical characteristics consist of mineral assemblages plagioclase, quartez, K-feldspar and biotite. Geochemically, these rocks are calc-alkaline series and based on saturation degree of aluminum (ASI) are peraluminous. The mineralogical, lithological, and geochemical studies indicate that the Alvand porphyroid granitoids have S-type characteristics. These rocks displays the geochemical characteristics typical of magmatic arc intrusions related to an active continental margin.
| Original language | English |
|---|---|
| Pages (from-to) | 2192-2199 |
| Number of pages | 8 |
| Journal | Australian Journal of Basic and Applied Sciences |
| Volume | 5 |
| Issue number | 12 |
| Publication status | Published - Dec 2011 |
| Externally published | Yes |
Keywords
- Alvand porphyroid granitoids
- Calc-alkaline series
- S-type granites