Komatiite magmas and nickel sulfide deposits: a lithogeochemical comparison of variably endowed terranes
We have compiled an extensive database of whole-rock major and trace element geochemistry for a number of Archaean greenstone belts and Proterozoic orogenic belts containing komatiites and komatiitic basalts: the Eastern Goldfields Superterrane and the Forrestania - Lake Johnston-Ravensthorpe belts of the Yilgarn Craton (Barnes, et al., 2004; Barnes, et al., 2007; Perring, et al., 1996); the Cape Smith and Thompson Belts of the Circum-Superior orogeny (Layton-Matthews, et al., 2003; Layton-Matthews, et al., 2007; Lesher, 2007); and the Abitibi greenstone belt of the Superior Craton (Sproule, et al., 2002; Sproule, et al., 2005). All of these belts contain nickel sulfide deposits associated with olivine-rich cumulates from komatiitic magmas. In each case we have a sufficiently extensive body of data to be able to estimate the relative proportions of different rock types, based on lithogeochemistry. We compare these datasets with a global komatiite database which includes data from largely barren komatiite sequences worldwide.
Stephen J.Barnes C.Michael Lesher O.Marcus Burnham Marco L.Fiorentini
CSIRO, Perth Laurentian University, Sudbury Ontario Geologial Survey, Sudbury Centre for Exploration Targeting, Univ.of WA, Perth
国际会议
Xian International Ni-Cu(Pt) Deposit Symposium 2009(2009 西安·Ni-Cu(Pt)岩浆矿床国际学术研讨会)
西安
英文
200-203
2009-09-01（万方平台首次上网日期，不代表论文的发表时间）