Carbonatite Metasomatism in the Southeastern Australian Lithosphere

Carbonatite Metasomatism in the Southeastern Australian Lithosphere

New mineralogical and geochemical data from a suite of glass ± from the mantle (Deines & Gold, 1973; Nelson et al., 1988). However, controversy remains as to whether such apatite ± amphibole ± phlogopite ± carbonate-bearing spinel magmas represent (1) direct partial melts of carbonatewehrlite, lherzolite and harzburgite xenoliths from the Newer Volbearing mantle peridotite (i.e. primary carbona...

Stochastic waveguide in the lithosphere: Indonesian subduction zone to Australian craton

S U M M A R Y Earthquakes occurring in the Indonesian subduction zone recorded in the cratonic regions of northern Australia have long, high frequency coda associated with both P and Swaves. Similar behaviour is seen for earthquakes within Australia on paths within the cratonic regions. The complex character of the coda and its rapid spatial variation indicate that the high frequency waves have...

3-D structure of the Australian lithosphere from evolving seismic datasets

Seismic structure of the southeast Australian lithosphere from surface and body wave tomography

Article history: Received 13 June 2011 Received in revised form 11 October 2011 Accepted 21 November 2011 Available online xxxx

Trace Element Evidence for Hydrous Metasomatism at the Base of the North American Lithosphere and Possible Association with Laramide Low-Angle Subduction

Trace element signatures of mantle xenoliths along an east-west transect extending from the Sierra Nevada to the Colorado Plateau were investigated in this study. Those beneath the Sierra Nevada are highly enriched in fluid-mobile elements (Cs, Pb, U, and Sr) and, in particular, are characterized by low U/Pb and high Sr/Nd. These signatures imply that aqueous fluids derived by dehydration of se...