geodynamics and tectonic setting of volcanic rocks from Tineh to Reineh (Haraz road) in Iran | ||
| Geopersia | ||
| مقاله 9، دوره 16، شماره 1 - شماره پیاپی 22287825، فروردین 2026، صفحه 171-194 اصل مقاله (2.63 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/geope.2025.395984.648823 | ||
| نویسندگان | ||
| Ramin mazandarani1؛ Seyed jamal sheikh zakariaee* 1؛ Seyed Mojtaba Mortazavi2؛ Mansur Vosoughi Abedini3؛ Abdollah Yazdi* 4 | ||
| 1Department of Earth Sciences, SR.C., Islamic Azad University, Tehran, Iran | ||
| 2Department of Mining Engineering, Sava.C., Islamic Azad University, Savadkooh, Iran | ||
| 3Department of Geology, Shahid Beheshti University, Faculty of Earth Sciences, Tehran, Iran | ||
| 4Department of Geology, Kah.C., Islamic Azad University, Kahnooj, Iran | ||
| چکیده | ||
| Damavand Stratovolcano is the highest volcano (5610m) in Iran and the Middle East. This mountain, located approximately 50 km northeast of Tehran, is currently experiencing fumarole activity. On the Haraz road, the main volcanic rocks are olivine basalt, trachyandesite, and basalt trachyandesite with olivine, clinopyroxene (augite), phlogopite, apatite, iron oxides, amphibole (pargasite), and zircon minerals. The chondrite-normalized and primitive mantle-normalized multi-element spider diagrams reveal enrichment in LILEs and LREEs, along with depletion in HFSEs and HREEs (such as Ti and Nb). These geochemical signatures reflect characteristics of both subduction-related and ocean island basalt (OIB) environments, suggesting a deep mantle source for the lavas. It appears that the local rise of deep-mantle materials beneath the Alborz Mountains led to the eruption of intraplate Damavand lavas. Compressional stress applied to the Iranian plate after the closure of Neotethys was a possible cause of sub-continental lithosphere delamination, which led to mantle uplift. The eruption of intraplate Damavand lavas appears to be linked to the localized upwelling of deep mantle material beneath the Alborz Mountains. This mantle ascent may have been triggered by compressional forces on the Iranian plate following the closure of the Neotethys Ocean, potentially causing delamination of the sub-continental lithosphere. . . | ||
| کلیدواژهها | ||
| Damavand Stratovolcano؛ Geochemistry؛ Volcanic rocks؛ Haraz؛ Iran | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 640 تعداد دریافت فایل اصل مقاله: 770 |
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