Cenozoic Volcanism in the Mediterranean Area

The geochemical peculiarity of “Plio-Quaternary” volcanic rocks of Sardinia in the circum-Mediterranean area
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Published:January 01, 2007
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CiteCitation
Michele Lustrino, Leone Melluso, Vincenzo Morra, 2007. "The geochemical peculiarity of “Plio-Quaternary” volcanic rocks of Sardinia in the circum-Mediterranean area", Cenozoic Volcanism in the Mediterranean Area, Luigi Beccaluva, Gianluca Bianchini, Marjorie Wilson
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Late Cenozoic volcanic rocks on the island of Sardinia are mildly alkaline-transitional lavas, dominantly hawaiites, mugearites, and transitional basalts with minor phonolites and trachytes, which form ∼80% of the entire sample population. Tholeiitic basaltic andesites form the remaining 20% of the analyzed rocks. The oldest lavas, the ca. 6.6–4.4 Ma radiogenic Pb volcanic group, are in southern Sardinia; they have geochemical characteristics very similar to most Circum-Mediterranean Anorogenic Cenozoic Igneous Province rocks. After a gap of ∼0.5 m.y., volcanism occurred in central and northern Sardinia, from ca. 3.9 to ca. 0.1 Ma. These products, the unradiogenic Pb volcanic group, are...
- absolute age
- alkali basalts
- alkaline earth metals
- andesites
- Ar/Ar
- basalts
- Cenozoic
- chemical composition
- continental crust
- crust
- dates
- discontinuities
- Europe
- hawaiite
- high-field-strength elements
- ICP mass spectra
- igneous rocks
- isotope ratios
- isotopes
- Italy
- lava
- lead
- lithosphere
- lower crust
- major elements
- mantle
- mass spectra
- Mediterranean region
- metals
- mineral composition
- mugearite
- Nd-144/Nd-143
- neodymium
- Neogene
- outcrops
- Pb-206/Pb-204
- Pliocene
- Quaternary
- radioactive isotopes
- rare earths
- Sardinia Italy
- Southern Europe
- spectra
- Sr-87/Sr-86
- stable isotopes
- strontium
- Tertiary
- trace elements
- variations
- volcanic rocks
- X-ray fluorescence spectra