TO: Tom Davies
FM: Jay Miller
JA Daily Science Report for Expedition 305, 16 February 2005.
SCIENCE UPDATE: Cores 305-U1309D-253R to -254R (1215.9 to 1225.5 mbsf, 66% recovery) are coarse-grained oxide gabbro, medium-grained gabbro, and coarse-grained olivine gabbro. These gabbros range from only slightly altered (<5%) to as much as 30% altered, with olivine gabbros showing the more intense alteration. There is a weak foliation in the finer grained intervals, coarse-grained intervals are isotropic.