TO: Tom Davies

FM: Carlos A. Alvarez Zarikian


JA Daily Science Report for Expedition 306, 14 March 2005.


LOCATION: Site U1312 (IRD4A)


SCIENCE UPDATE: Due to bad weather conditions drilling of Hole U1312B had to stop at a depth of 231.9 mbsf, and drilling of a third hole at this site was cancelled. Scientists continue their routine laboratory work and data acquisition. Cores 306-U1312B-5H to 25H (32.4 to 231.9 mbsf, recovery 101.7%) are predominantly Pliocene to Miocene (NN16-NN8) white nannofossil ooze, with intervals of nannofossil ooze with clay and foraminiferal nannofossil ooze. A graded foraminiferal sand layer previously recorded in Hole U1312A also was found in Hole U1312B at almost the same depth (114.11-114.45 mbsf). The Jaramillo Normal Polarity Zone was identified in Hole U1312B from 21 to 24.9 mbsf.