Ancient high Pt/Os crustal contaminants can explain radiogenic 186Os in some intraplate magmas
Sign Up to like & getrecommendations! Published in 2019 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2019.04.039
Abstract: Abstract The origin of variations in 186 Os/ 188 Os ratios amongst mantle-derived basaltic and komatiitic lavas remains controversial, with opposing models arguing for deep core-mantle versus shallow mantle sources. Crustal contamination has generally not… read more here.
Keywords: crustal contamination; variations 186; ancient high; explain radiogenic ... See more keywords
Elemental and Sr-Nd-Pb isotope geochemistry of the Florianópolis Dyke Swarm (Paraná Magmatic Province): crustal contamination and mantle source constraints
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Volcanology and Geothermal Research"
DOI: 10.1016/j.jvolgeores.2017.07.005
Abstract: Abstract The Florianopolis Dyke Swarm is located in Santa Catarina Island, comprising also the adjacent continental area, and belongs to the Parana Magmatic Province (PMP). The dyke outcrops in the island are 0.1–70 m thick and… read more here.
Keywords: dyke; geochemistry; crustal contamination; magmatic province ... See more keywords
Crustal contamination versus an enriched mantle source for intracontinental mafic rocks: Insights from early Paleozoic mafic rocks of the South China Block
Sign Up to like & getrecommendations! Published in 2017 at "Lithos"
DOI: 10.1016/j.lithos.2017.06.023
Abstract: Abstract Several recent studies have documented that the silicic rocks (SiO 2 > 65 wt.%) comprising Silicic Large Igneous Provinces are derived from partial melting of the crust facilitated by underplating/intraplating of “hidden” large igneous province-scale basaltic… read more here.
Keywords: early paleozoic; enriched mantle; mantle source; mafic ... See more keywords
Crustal contamination and genesis of transitional alkaline-tholeiitic intrusions: Insights from the José Fernandes Suite, Paraná Magmatic Province, Brazil
Sign Up to like & getrecommendations! Published in 2019 at "Lithos"
DOI: 10.1016/j.lithos.2019.05.023
Abstract: Abstract The Jose Fernandes suite, located in the Ponta Grossa Arch (PGA) region of southern Brazil, is an approximately 3 km2 composite intrusion associated with the Early Cretaceous (134 Ma) intrusive magmatism that formed the Parana-Etendeka Magmatic… read more here.
Keywords: crustal contamination; fernandes suite; contamination; magmatic province ... See more keywords
Concentrations of Te, As, Bi, Sb and Se in the Marginal Zone of the Bushveld Complex: Evidence for crustal contamination and the nature of the magma that formed the Merensky Reef
Sign Up to like & getrecommendations! Published in 2020 at "Lithos"
DOI: 10.1016/j.lithos.2020.105407
Abstract: Abstract The association of platinum-group elements (PGE) and the chalcophile elements Te, As, Bi, Sb and Sn (TABS) has been extensively documented in several magmatic sulfide deposits over the past years. However, understanding the roles… read more here.
Keywords: zone bushveld; marginal zone; bushveld complex; crustal contamination ... See more keywords