JA Daily Science Report for Expedition 309, 17 August 2005


LOCATION: Site 1256


SCIENCE UPDATE: Cores 159R to 161R recovered 4.55 m of aphyric cryptocrystalline to microcrystalline basalt with fine-grained patches from 1203.8 to 1213.4 mbsf (47.4 % recovery). Core 161R-1 contains multiple spectacular mutually intrusive contacts defining thin cm-scale dikelets enveloped by elaborate green alteration halos.