Use of whole rock geochemistry for ignimbritic unit recognition: an example from the Sulcis area (SW Sardinia, Italy)

Abstract

In the Sulcis area (SW Sardinia, Italy) a thick OligoMiocene volcanic sequence formed during the drifting and rotation of Sardinia from the European continental margin to its current position. These volcanics originated by the combined effect of oceanic crust subduction under the Corsica-Sardinia microplate and increased extensional tectonics after 18 Ma