Lamproites from Gaussberg, Antarctica: Possible transition zone melts of Archaean subducted sediments

• Published in: Journal of Petrology
• Main Authors: Murphy, DT, Collerson, KD, Kamber, BS
• Other Authors: M Wilson
• Format: Article in Journal/Newspaper
• Language: English
• Published: Oxford University Press 2002
• Subjects: Lamproites; Pb Isotopes; Mantle Transition Zone; Subducted Sediment; Anomalous Mantle Reservoirs; Geochemistry & Geophysics; Continental Lithospheric Mantle; Trace-elements; Isotopic Evidence; Age-determinations; Pelagic Sediments; Western-australia; Depleted Mantle; Deep Mantle; Re-os; Magmas; 260301 Geochronology and Isotope Geochemistry; C1; 780104 Earth sciences; Antarctic; Gaussberg; Antarc*; Antarctica; Ocean Island
• Online Access: https://espace.library.uq.edu.au/view/UQ:62921

Petrogenetic models for the origin of lamproites are evaluated using new major element, trace element, and Sr, Nd, and Pb isotope data for Holocene lamproites from the Gaussberg volcano in the East Antarctic Shield. Gaussberg lamproites exhibit very unusual Pb isotope compositions (Pb-206/Pb-204 = 1...