Abstract
Basalts and peridotites dredged in the Diamantina, a zone stretching west from the Australian continental margin towards Broken Ridge, have been studied. The basalts with clearly alkaline features cannot be considered related to an oceanic spreading ridge. Furthermore, the presence of peridotites with compositions close to both primitive mantle and peridotites known from continental margins strengthens the interpretation of crustal thinning at the origin of this zone. The age of this continental rifling and thus the rupture between Australia and Antarctica could be close to 93 Ma, measured on one of the basalts.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.