STA55 RD31.JPG (primary image)
 Sample Name:KK820316-4 STA55 RD31
 Other Name(s):
 Sample Type:Dredge
 Parent IGSN:Not Provided
Field Name: KK820316-4 STA55 RD31
Description:150 kg of pebble to boulder size rock fragments, all fresh and angular surfaces. 1) ~60% is vesicular basalt: of this ~ 40% is ol and/or cpx-rich with large euhedral phenocrysts of cpx and/or ol. A few of the samples are picritic 30% of these also contain plagioclase as a phenocryst together with cpx and olivine; however plagioclase contents are generally <5%. Spinel is a minor constituent in livines ~ 5% of the basalts are plag-pyroxene phyric with ~ 20% plag and 10-15% cpx. these may be transitional to the andesites. 2) ~ 30% andesite to Rhyodacite - one large boulder ~20 kg is holocrystalline Rhyodacite, the andesite contains plag (15%), cpx (10%) and possibly hornblende as phenocrysts in plag-rich groundmass; vesicles < 5%. Rhyodacite are holocrystalline with plag, K-spar, hornblende, qtz and aegirine cpx? less than <10 vesicles, some fragments have a glassy texture. 3) Sedimentary rocks: ~ 10% Epiclastic volcanic sandstones with various igneous clasts visible; pebbly mudstone and gravel; also a silty sand with foram. 1 bag described and 1 undescribed to HIG and Sol Is - also 1 bag with Rhyodacite boulder to HIG.
Age (min):Not Provided
Age (max):Not Provided
Collection Method:Dredge
Collection Method Description:Not Provided
Size:Not Provided
Geological Age:Not Provided
Geological Unit:Not Provided
Comment:Four buckets of samples available each individually labeled 1-3
Purpose:Geological studies
Latitude start (WGS84):-8.2128333
Latitude End:Not Provided
Longitude start (WGS84):156.46467
Longitude End:;Not Provided
Northing (m) (UTM NAD83):Not Provided
Easting (m) (UTM NAD83):Not Provided
Zone:Not Provided
Vertical Datum:Not Provided
Elevation start:Not Provided
Elevation End:Not Provided
Nav Type:Not Provided
Physiographic Feature:Not Provided
Name Of Physiographic Feature:Not Provided
Location Description:Ridge just NW of Simbo. Depth start (m) 2,045. Depth finish (m) 1,635
Locality:Not Provided
Locality Description:Not Provided
Country:Not Provided
State/Province:Not Provided
County:Not Provided
City: Not Provided
Field Program/Cruise:KK820316-4
Platform Type:Not Provided
Platform Name:Not Provided
Platform Description:Not Provided
Launch Type:Not Provided
Launch Platform Name:Not Provided
Launch ID:Not Provided
Collector/Chief Scientist:Not Provided
Collector/Chief Scientist Detail:Not Provided
Collection Start Date:1982-06-02 00:00:00Z
Collection End Date:Not Provided
Current Archive:Not Provided
Current Archive Contact Details:Not Provided
Original Archive:Not Provided
Original Archive Contact Details:Not Provided
Related Samples
Parents:No Parents
Siblings:No Siblings
Children:No Children
Relevant Documents: