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IODP Expedition 330 Louisville Seamount Trail

Daily Science Report 47 -- Thursday, 27 January 2011


Site U1376 on 32.3°S Guyot 32° 12' 59.4" S, 171° 52' 50.4012" W
Louisville Seamount Trail
0 m above sea level

Although the TV survey of the seafloor at new Site U1376 found no soft sediment cover, Hole U1376A was successfully spudded into hard ground in mid morning. Core U1376A-1R (0-9.5 mbsf) retrieved an interesting succession of sedimentary rocks with 85% recovery. The material is described as cemented volcaniclastic breccia and volcaniclastic sandstone. Four prominent 1-2 cm thick manganese layers and two yellow, several cm thick altered and bioturbated volcanic ash layers can be found in the upper part of the core. The series of U1374 site meetings was continued today with presentatons by the Igneous Petrology, Alteration Petrology and Structural Geology lab groups.