Sample ID: PANR06MV - 1D Sample Type: Dredge

Cruise information: PANR06MV Start End Cruise dates 1998-04-18 1998-06-07 Cruise ports Papeete, Tahiti Honolulu,Hawaii SIO cruise id PANR06MV Cruise name PANORAMA EXPEDITION LEG 6 Chief scientist Gee, Jeffrey Cruise narrative Marine Geophyiscal and geological investigation of the ultrafast spreading EPR near 19 deg south- using multibeam mapping, the Deep Tow instrument system, dredging and coring. A near bottom Deep Tow profile across magnetic anomaly 5 was made for comparison with a Deep Tow survey of the same age crust in the northeast Pacific in 1995. Deep tow profiles near the EPR axis suggest that geomagnetic intensity variations, rather than intrinsic differences (e.g., geochemistry or thickness) in the magnetic source layer, are responsible for much of the high frequency anomaly variation. Cruise ngdc number NO_DATA Proposal title Short Wavelength Magnetic Variations within the Central Anomaly on the Southern EPR

Sample information PANR06MV Start End Date 1998-05-15 1998-05-15 Latitude -19.7467 -19.7433 Longitude -113.497 -113.492 Water depth (m) 2980 3015 SIO code PANR06MV-1D SIO sample number 1D IGSN number SIO000720 Ship name Melville Navigation type TRIMBLE TASMAN P(Y) GPS Sampling tool type dredge Province ridge crest Crustal age model (mybp) 0.231565

Sub-sample information Sub-sample number 1 Siocode PANR06MV-1D Depth top (cm) Depth bottom (cm) Lithology Texture Composition Geological age Weight Rock lithology igneous (extrusive/volcanic) - basalt - pillow Rock min Weathering weathering - heavy Remark some samples exhibit palagonitized glass Munsell code Exhaust code Comments Southern EPR old - altered pillow basalt and pillow buds with station glass Sub-sample number 2 Siocode PANR06MV-1D Depth top (cm) Depth bottom (cm) Lithology Texture Composition Geological age Weight Rock lithology igneous (extrusive/volcanic) - obsidian/quenched basalt-glass Rock min Weathering weathering - heavy Remark some samples exhibit palagonitized glass Munsell code Exhaust code Comments Southern EPR old - altered pillow basalt and pillow buds with station glass