JA Daily Science Report for Expedition 309, 06 August 2005


LOCATION: Site 1256


SCIENCE UPDATE: Cores 129R to 132R recovered 8.91 m of basalts from 1060.9 to 1081.6 mbsf (46.4%). A spherulitic flow margin in Core 129R-1 Piece 1 marks the beginning of Unit 44 which comprises aphyric microcrystalline basalt flows. Unit 44 is divided into four subunits, on the basis of reduction of grain size or presence of chilled margins, with minimum thicknesses of 1.96, 2.34, 4.41 and 0.70 m.