Skip navigation

IODP Expedition 330 Louisville Seamount Trail

Daily Science Report 15 -- Sunday, 26 December 2010


Site U1372 on 26.5°S Guyot 26° 29' 35.9988" S, 174° 43' 45.0012" W
Louisville Seamount Trail
0 m above sea level

Cores U1372A-19R (138.2-143.0 mbsf) and -20R (143.0-145.0 mbsf) retrieved brecciated igneous rocks with a recovery rate of 74% and 55% respectively. These cores are currently being described. After having penetrated 100 m of igneous rock, the paleomagnetic group has announced a positive interim evaluation: All measured rocks show a surprisingly low, drilling induced, magnetic overprint. This is believed to result (at least in part) from the exclusive use of non-magnetic core barrels during this expedition. The necessity of today’s scheduled drill bit change provides a welcome opportunity for all lab groups to catch up with core description and shipboard measurements.