Academic Journal
Ruby Xenocrystals in Dacite from Central Mexico
| العنوان: | Ruby Xenocrystals in Dacite from Central Mexico |
|---|---|
| المؤلفون: | Luis Enrique Ortiz Hernández, Jose Cruz Escamilla Casas |
| المصدر: | Geofísica Internacional, Vol 63, Iss 3, Pp 977-988 (2024) |
| بيانات النشر: | Universidad Nacional Autónoma de México, Instituto de Geofísica, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Geophysics. Cosmic physics |
| مصطلحات موضوعية: | ruby, corundum, dacite, xenocrystals, mexico, Geophysics. Cosmic physics, QC801-809 |
| الوصف: | The occurrence of 1-2 cm in diameter, anhedral xenocrystals of red corundum (ruby) in a dacitic lava- flow from central Mexico -in the state of Hidalgo- has been recorded. Geochemically, this dacite nearly resembles adakitic rock (SiO2=63.73 66.64 wt %), with low alumina contents (Al2O3=14.38 14.93 wt %), sodium (Na2O=3.29 3.57wt %) and titanium (TiO2=0.55 0.60 wt %), slightly peraluminous (A/ CNK=1.04 1.17) and moderately potassic (K2O=1.90-2.04 wt %; K2O/Na2O=0.53-0.62), with rare earth spectra enriched in light-rare earth elements (La/Yb)N=9.71 10.98. The origin of the dacite is linked to the early geological evolution of the eastern sector of the Trans-Mexican Volcanic Belt (TMVB) during the Miocene, and its provenance could be a melt of a basaltic and pelitic-sediments slab and magmatic differentiation that generated adakitic magma. The gem-type corundum could have resulted after the addition of refractory products disaggregated from the Precambrian basement, carried, and transported to the surface by ascending magma. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Spanish; Castilian |
| تدمد: | 0016-7169 2954-436X 2954436x |
| Relation: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1727; https://doaj.org/toc/0016-7169; https://doaj.org/toc/2954-436X |
| DOI: | 10.22201/igeof.2954436xe.2024.63.3.1727 |
| URL الوصول: | https://doaj.org/article/3922fe4f25954fe58aed962198e0c6d0 |
| رقم الانضمام: | edsdoj.3922fe4f25954fe58aed962198e0c6d0 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 00167169 2954436X 2954436x |
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| DOI: | 10.22201/igeof.2954436xe.2024.63.3.1727 |