[1] Univ Western Australia, Sch Earth & Geog Sci, Nedlands, WA 6009, Australia
[2] Niigata Univ, Fac Sci, Dept Geol, Niigata 9502181, Japan
[3] Deakin Univ, Sch Ecol & Environm, Burwood, Vic 3125, Australia
[4] UN Eep, PetroBras, St, Msp, BR-20031912 Rio De Janeiro, Centro, Brazil