دورية أكاديمية
New constraints on the origin of the ophiolitic rocks within sinorogenic turbiditic sequences at Cilento region (southern Italy)
| العنوان: | New constraints on the origin of the ophiolitic rocks within sinorogenic turbiditic sequences at Cilento region (southern Italy) |
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| المؤلفون: | Mazzeo, F.C., De Vita, P., Aulinas Juncà, Meritxell, Arienzo, I., Cirillo, G., Iovine, R.S., Sparice, D. |
| المصدر: | Geologica Acta; 2016: Vol.: 14 Núm.: 3; p. 299-314 |
| Publication Status: | published |
| بيانات النشر: | Universitat de Barcelona, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Southern Apennine, Cilento region, Mount Centaurino, Ophiolitic olistoliths, MORB-type rocks |
| الوصف: | Mafic igneous rocks (pillow lavas and gabbros) embedded as olistoliths within Miocene turbiditic sequences crop out in the Cilento area at the Mount Centaurino (Campania region, Southern Italy). The concentration of major oxides, as well as trace element ratios (Nb/Yb, Nb/Ta, Th/Nb) and the chondrite-normalized Rare Earth Elements (REE) patterns suggest a tholeiitic character with Mid Oceanic Ridge Basalts (MORB) affinity. The chemical composition of pillow lavas is consistent with magmas generated by 10% degrees of non-modal fractional partial melting, of a spinel-bearing MORB-type asthenospheric mantle. Regarding gabbros, the calculated composition of parental melts in equilibrium with the clinopyroxenes show a wide compositional range, and there are very different from the pillow basalts of the Mount Centaurino, suggesting that the clinopyroxenes might have derived from more evolved melts compared to those that produced the basalts. The origin of these olistoliths is not yet understood. Here we suggest that these rocks represent fragment of a dismantled accretionary wedge embedded during the deposition of the Cilento group sedimentary successions in a thrust top basin. |
| نوع الوثيقة: | article |
| وصف الملف: | text/html |
| اللغة: | English |
| تدمد: | 1696-5728 1695-6133 |
| Relation: | https://www.raco.cat/index.php/GeologicaActa/article/view/312908/403021 |
| URL الوصول: | https://www.raco.cat/index.php/GeologicaActa/article/view/312908 |
| رقم الأكسشن: | edsrac.312908 |
| قاعدة البيانات: | RACO (Revistes Catalanes amb Accés Obert) |
Full Text Finder | تدمد: | 16965728 16956133 |
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