DOI: 10.1007/s00531-014-1077-7
Scopus记录号: 2-s2.0-84920857714
论文题名: Geochronological study of zircons from continental crust rocks in the Frido Unit (southern Apennines)
作者: Laurita S. ; Prosser G. ; Rizzo G. ; Langone A. ; Tiepolo M. ; Laurita A.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2014
卷: 104, 期: 1 起始页码: 179
结束页码: 203
语种: 英语
英文关键词: Continental crust rocks
; Frido Unit
; Southern Apennines
; Zircon U–Pb LA–ICP–MS analyses
Scopus关键词: age determination
; cathodoluminescence
; continental crust
; geochronology
; gneiss
; uranium-lead dating
; zircon
; Apennines
; Calabria
; Italy
; Pollino Massif
英文摘要: Zircon crystals have been separated from gneisses and metagranitoids of the Pollino area (southern Apennines) in order to unravel the origin of these crustal slices within the ophiolite-bearing Frido Unit. The morphology of the zircon has been investigated by SEM, and the internal structure was revealed by cathodoluminescence. Data obtained by U/Pb dating have been used to deduce the age and significance of the different crystallization stages of zircon, connected to the evolutionary stages of the continental crust (Late Paleozoic–Early Mesozoic). Zircons in gneisses are characterized by inherited cores of magmatic origin, bordered by metamorphic rims. Inherited zircons generally show Paleoproterozoic to Ordovician ages, indicating the provenance of the sedimentary protolith from different sources. The exclusive presence of Late Neoproterozoic zircon cores in leucocratic gneisses may suggest a different magmatic source possibly connected to Pan-African events. Late Carboniferous–Early Permian ages are found mainly in zircon rims of metamorphic origin. These are similar to the emplacement ages of protolith of the metagranites in the middle crust portion. Late Carboniferous–Early Permian metamorphism and magmatism testify the extensional collapse of the Hercynian belt, recorded in European, particularly, in the Corsica–Sardinia block and in Calabria. Late Permian–Triassic ages have been detected in zircon rims from gneisses and metagranitoids. These younger ages appear related to deformation and emplacement of albite–quartz veins in both lithologies, and are related to an extensional episode predating the Middle Triassic to Middle Jurassic rifting in the Tethyan domain, followed by Middle to Late Jurassic spreading. © 2014, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84920857714&doi=10.1007%2fs00531-014-1077-7&partnerID=40&md5=7ceb0c794d8ddbfaecd46e7e79ad5410
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70354
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Sciences, University of Basilicata, Viale dell’Ateneo Lucano 10, Potenza, Italy; CNR-IGG, UOS di Pavia, Pavia, Italy
Recommended Citation:
Laurita S.,Prosser G.,Rizzo G.,et al. Geochronological study of zircons from continental crust rocks in the Frido Unit (southern Apennines)[J]. International Journal of Earth Sciences,2014-01-01,104(1)