| Autor: |
F. Secchi, S. Naitza, G. Oggiano, S. Cuccuru, A. Puccini, A. M. Conte, T. Giovanardi, M. Mazzucchelli |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Journal of Maps, Vol 17, Iss 2, Pp 591-606 (2021) |
| DOI: |
10.6084/m9.figshare.19181536.v1 |
| Popis: |
This paper deals with the geological mapping of the late-Variscan Sàrrabus pluton, (south-eastern Sardinia), a shallow multiple and composite igneous complex dominated by several generations of granodiorites, metaluminous and peraluminous granites and repeated pulses of mantle-derived mafic magmas. The map has been compiled based on geological surveys at 1:10,000 and 1:5,000 scales, assisted by in situ gamma-ray spectrometry and detailed petrographic investigations. Granite-related ore deposits have been also reported. The emplacement age of the pluton can be constrained by U/Pb dating on zircons of Cala Regina granodiorite, yielding an age of 286 ± 9 Ma. The resulting scenario documents a bimodal magmatism controlled by an EW trending shear zone, followed by the shallower emplacement of several pulses of independent granite magmas. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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