High field strength element ratios in Archean basalts: a window to evolving sources of mantle plumes?
KC Condie - Lithos, 2005 - Elsevier
In terms of high field strength element ratios Nb/Th, Zr/Nb, Nb/Y and Zr/Y, most basalts from
non-arc type Archean greenstones are similar to oceanic plateau basalts, suggestive of …
non-arc type Archean greenstones are similar to oceanic plateau basalts, suggestive of …
A catalytic delamination-driven model for coupled genesis of Archaean crust and sub-continental lithospheric mantle
JH Bédard - Geochimica et cosmochimica acta, 2006 - Elsevier
There is no consensus on the processes responsible for near-coeval formation of Archaean
continental crust (dominantly tonalite–trondhjemite–granodiorite: TTG), greenstone belts …
continental crust (dominantly tonalite–trondhjemite–granodiorite: TTG), greenstone belts …
Frontiers in large igneous province research
RE Ernst, KL Buchan, IH Campbell - Lithos, 2005 - Elsevier
Earth history is punctuated by events during which large volumes of mafic magmas were
generated and emplaced by processes distinct from “normal” seafloor spreading and …
generated and emplaced by processes distinct from “normal” seafloor spreading and …
Late Cretaceous arc development on the SW margin of the Caribbean Plate: Insights from the Golfito, Costa Rica, and Azuero, Panama, complexes
The processes of arc initiation at the margin of an oceanic plateau are remarkably well
preserved along the southern coastline of eastern Costa Rica and western Panama. We …
preserved along the southern coastline of eastern Costa Rica and western Panama. We …
Origin of the Permian-Triassic komatiites, northwestern Vietnam
Rare examples of Phanerozoic komatiites are found in the Song Da zone, NW Vietnam.
These komatiites were erupted through continental crust and may belong to the SE …
These komatiites were erupted through continental crust and may belong to the SE …
Nickel and helium evidence for melt above the core–mantle boundary
Abstract High 3He/4He ratios in some basalts have generally been interpreted as originating
in an incompletely degassed lower-mantle source,,,,,,,,. This helium source may have been …
in an incompletely degassed lower-mantle source,,,,,,,,. This helium source may have been …
Oceanic plateaus: Problematic plumes, potential paradigms
AC Kerr, JJ Mahoney - Chemical Geology, 2007 - Elsevier
Oceanic plateaus are vast areas (> 2× 105 km2) of thicker than average oceanic crust (up to
38 km) that typically are elevated 2–3 km above the surrounding seafloor. Because of their …
38 km) that typically are elevated 2–3 km above the surrounding seafloor. Because of their …
Imprints of modal metasomatism in the post-Deccan subcontinental lithospheric mantle: petrological evidence from an ultramafic xenolith in an Eocene lamprophyre …
We report here on the occurrence of an interesting mantle-derived ultramafic xenolith
entrained in an Eocene (c. 55 Ma) lamprophyre dyke from the Dongargaon area of the …
entrained in an Eocene (c. 55 Ma) lamprophyre dyke from the Dongargaon area of the …
An integrative geologic, geochronologic and geochemical study of Gorgona Island, Colombia: Implications for the formation of the Caribbean Large Igneous Province
The genesis of the Caribbean Large Igneous Province (CLIP) has been associated to the
melting of the Galapagos plume head at~ 90Ma or to the interaction between the plume and …
melting of the Galapagos plume head at~ 90Ma or to the interaction between the plume and …
182W and 187Os constraints on the origin of siderophile isotopic heterogeneity in the mantle
Major and trace element abundances, including highly siderophile elements, and 187 Os
and 182 W isotopic compositions were determined for ca. 89 Ma mafic and ultramafic rocks …
and 182 W isotopic compositions were determined for ca. 89 Ma mafic and ultramafic rocks …