Sample ID: PPTU04WT - 20D Sample Type: Dredge


Cruise information: PPTU04WT
Start End
Cruise dates 1986-01-01 1986-01-27
Cruise ports Pago Pago, American Samoa Nukualofa, Tonga

SIO cruise id PPTU04WT
Cruise name PAPATUA LEG 4
Chief scientist Hawkins, James W.
Cruise narrative The primary objective of this cruise is to derive a geological model of the process by which seafloor spreading occurs in a back-arc basin- and to test the hypothesis that the opening of the basin has been controlled in part by the mechanism of rift propagation with the direction of propagation running from north to south.
Cruise ngdc number 15040163
Proposal title



Sample information PPTU04WT
Start End
Date 1986-01-15 1986-01-15
Latitude -16.337 -16.4
Longitude -177.495 -177.5
Water depth (m) 1621 1002

SIO code PPTU04WT-20D
SIO sample number 20D
IGSN number SIO001694
Ship name T. Washington
Navigation type SATNAV-GPS,AUTO LOG GYRO+2D DOPPLER SPD
Sampling tool type dredge
Province seamount or seamount province
Crustal age model (mybp) NO_DATA



Sub-sample information
Sub-sample number 1
Siocode PPTU04WT-20D
Depth top (cm)
Depth bottom (cm)
Lithology
Texture
Composition
Geological age
Weight
Rock lithology igneous (extrusive/volcanic) - basalt - pillow
Rock min plagioclase (pg)
Weathering weathering - moderate
Remark some samples exhibit fresh glass
Munsell code
Exhaust code
Comments 360LBS.PILLOW BASALT - PILLOW BRECCIA - PALAGONITE -VARIED ALTERATION.