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Paleozoic age of the Capo Spartivento Orthogneiss, Sardinia, Italy

Chemical Geology: Isotope Geoscience Section

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Abstract

Zircon U Pb isotope dating of the Capo Spartivento Orthogneiss, proposed as a possible Precambrian basement of southern Sardinia, shows that this rock is Caledonian in age. Conventional multi-grain analyses yield an imprecise age of roughly 480 Ma, and ion-microprobe analyses of cores of single grains yield a consistent age of 449 Ma. Though some inherited grains of Proterozoic age are present in the zircon population, they are neither abundant nor consistent with Caledonian growth of new zircons within an older protolith. ?? 1989.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Paleozoic age of the Capo Spartivento Orthogneiss, Sardinia, Italy
Series title:
Chemical Geology: Isotope Geoscience Section
Volume
79
Issue:
2
Year Published:
1989
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Chemical Geology: Isotope Geoscience Section
First page:
147
Last page:
153
Number of Pages:
7