Sample ID: SOTW07WT - 008D Sample Type: Dredge

Cruise information: SOTW07WT Start End Cruise dates 1972-07-18 1972-08-07 Cruise ports Balboa, Canal Zone Callao, Peru SIO cruise id SOTW07WT Cruise name SOUTHTOW LEG 7 Chief scientist Sclater, John Cruise narrative A very detailed heat flow survey will be made- we hope to determine the causes of heat flow scatter near spreading centers and how these effects will affect the bias of the mean heat flow for a region since it may enable us to use heat flow averages as an age-predictive tool and possibly lead to some insight on thickness of the lithosphere. Cruise ngdc number 15040047 Proposal title

Sample information SOTW07WT Start End Date 1972-07-21 1972-07-21 Latitude 3.198 3.2 Longitude -83.337 -83.3 Water depth (m) 2468 2468 SIO code SOTW07WT-008D SIO sample number 008D IGSN number SIO001969 Ship name T. Washington Navigation type SATNAV-AUTOLOG GYRO + EMLOG Sampling tool type dredge Province Crustal age model (mybp) 0.46674

Sub-sample information Sub-sample number 1 Siocode SOTW07WT-008D Depth top (cm) Depth bottom (cm) Lithology Texture volcanic igneous rock Composition Geological age Weight Rock lithology Rock min Weathering Remark Munsell code Exhaust code Comments 8BAGS+1FRZ BOX