Appendix 2: Cook 7 Dredges
R/V Melville, COOK007
March 4 to April 12, 2001
R/V Melville
Sherm Bloomer and R.J. Stern, co-chief scientists
All locations by GPS; dredge with pinger except where noted

Sample number: D34
Location:  Parasitic cone, E. Diamante Cone
Date (Z): 3.31.01
On bottom:	Time:		1334	
Latitude:	15 53.00’N
Longitude: 	145 44.0’E
Depth: 		1289

Off bottom:	Time: 		2228
Latitude:	15 53.17’N
Longitude: 	145 44.23’E
Depth: 		1170

Description from on deck cataloging:

30 kg of andesite (?) including one large boulder

Type 1:  light gray hornblende andesite with black manganese crust

Type 2:  quartz hornblende dacite

Type 3:  coarse grained andesite (?)

Sample number: D35
Location:  NE inner caldera wall, E. Diamante
Date (Z): 4/1/01
On bottom:	Time: 0545	
Latitude: 15-57.25N		
Longitude: 145-42.0E
Depth: 627

Off bottom:	Time: 0650
Latitude:15-57.4N		
Longitude: 145-42.0E
Depth: 475

Description from on deck cataloging:
~40 lbs, 2/3 shelly debris, some Mn-coated. Basalt clasts, volcanic sand, rounded coral pebbles- 3 large blocks, and coquina-like coarse sandstone.
Type 1: Large block of sand and shell fragments-finer grained and less indurated than type 2
Type 2: shelly coquina blacks and debris – large block, 1 bucket, coral encrusted oyster-type shell pieces included
Type 3: volcanic blocks and clasts, many subrounded ? or purely Mn
Type 4:  Sand from pipes, bucket- with small rounded coral or coquina clast
Type 5: Scoriacious Mn covered sample formerly know as basalt.

Sample number: D36
Location:  
Date (Z): 4-01-01
On bottom:	Time: 0815	
Latitude:15-56.12N		
Longitude: 145-39.74E
Depth: 520

Off bottom:	Time: 0904
Latitude:15-56.21N		
Longitude: 145-39.86E
Depth: 282

Comments:
Yellow-brown, shell clast, karstified sand stone w/thin manganese crust.

Description from on deck cataloguing:
Type 1: Karstic coquina/ sandstone

Sample number: D37
Location:  Mariana W-flank of E. Diamante caldera
Date (Z): 4-1-01
On bottom:	Time: 1102	
Latitude:15-55.02N		
Longitude: 145-35.64E
Depth: 1181

Off bottom:	Time: 1156
Latitude:15-55.15N		
Longitude: 145-35.85E
Depth: 1067

Comments: 20 kg of large white pumice; 10 kg of volcanic, black sandstone; 1 piece of plag. basalt

Description from on deck cataloguing:
Type 1: White pumice, massive – several large blocks, the largest is 30x25x20 cm
Type 2: Black, Mn crust, tabular
Type 3: Black lava flow angular.

Sample number: D38
Location:  	small seamount between E. and W. Diamante
Date (Z): 4.1.01
On bottom:	Time:		1612	
Latitude:	15 56.7N
Longitude: 	145 31.2E
Depth: 		1766

Off bottom:	Time: 		1715
Latitude:	15 56.7N
Longitude: 	145 31.56E
Depth: 		1477

Comments:  no pinger

Description from on deck cataloging:
~30 kg basalt, subrounded blocks. 1 large block, several smaller – basaltic sand as well.

Type 1: 1 small boulder (1/2 bucket, about 26 kg) vesicular basalt (pillow?)

Type 2: scoria, about 2 kg (one piece wedged in a side pipe)

Type 3  basalt cobbles and fragments, about 10 kg

Type 4:  volcanic sands, from bucket and pipes, 1 kg

Type 5:  basaltic breccia (possible an autobreccia?)

Type 6:  pumice blocks (2 pieces) Off bottom:	Time: 13:24
Latitude: 17-24.31 N	
Longitude: 145-51.91 E
Depth: 1695m

Comments: max line out –2150m; max tension: 12,000 lbs

Description from on deck cataloging:
	Type 1: Massive basalt, pieces up to 40 kg, some have small vesicles (6 cm cubic)
Type 2: vesicular basalts. Same sizes as massive basalt, have small (but many) vesicles on surface
Type 3: breccia ~6cm3
Type 4: manganese (small pieces) 
Type 5: basaltic rinds
 
Sample number: D59 
Location:  Marianas Arc
Date (Z): 4-7-01
On bottom:	Time: 0452
Latitude:15-57.51N		
Longitude: 145-27.47E
Depth: 1840

Off bottom:	Time: 0557
Latitude:15-57.59N		
Longitude: 145-27.23E
Depth: 1698

Description from on deck cataloguing:
Type 1: ~10 kg of fresh basalt with aa-like flow tops; upper surfaces have red-orange alteration of glass(paragonite?); some Mn on upper surface as well.

Sample number: D60
Location:  Marianas arc
Date (Z): 4-7-01
On bottom:	Time:0910	
Latitude:15-53.4N		
Longitude: 145-25.09E
Depth: 2385

Off bottom:	Time: 1028
Latitude:15-53.6N		
Longitude: 145-24.9E
Depth: 2200

Description from on deck cataloguing:
Type 1: subangular and subrounded cobbles of partially Mn-encrusted vesicular olivine-basalt;10 clasts in total
Type 2: small amount of coarse sand in side buckets