High-Mg Tertiary basalts in Southern Sardinia (Italy)

Details High-Mg Tertiary basalts in Southern Sardinia (Italy) High-Mg Tertiary basalts in Southern Sardinia (Italy)

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000e%26psl.179....1m&link_type=abstract

Earth and Planetary Science Letters, Volume 179, Issue 1, p. 1-7.

Mathematics

Logic

3

Scientific paper

High-Mg basaltic pillow lavas, important for an understanding of the petrogenetic evolution of the Tertiary volcanism of Sardinia, have recently been recognized in the lower part of the Early-Burdigalian volcano-sedimentary succession of the Villanovaforru (VF) area (Southern Sardinian Trough). Their textures vary from porphyritic to highly phyric types (doleritic) and the paragenesis is represented by Pl+Ol+Cpx+/-Opx+/-Opq. These basalts are sub-alkaline with a tholeiitic tendency; they display high MgO (mg-number 64-68), high Ni and Cr contents and their geochemical features are related to subduction-related magmas, with large-ion lithophile element enrichment and negative Nb, Zr and Ce spikes in mantle-normalized diagrams. The mineralogical and geochemical characteristics indicate that the VF basalts crystallized from primitive magmas within an extension-dominated tectonic setting. The presence of primitive basalts suggests crustal thinning in association with the Burdigalian extensional tectonics affecting the Sardinian Trough.

Affiliated with

Also associated with

No associations

Rating

High-Mg Tertiary basalts in Southern Sardinia (Italy) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with High-Mg Tertiary basalts in Southern Sardinia (Italy), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-Mg Tertiary basalts in Southern Sardinia (Italy) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1348025