Technical Note 20/4

LEG 172 PROSPECTUS

Table 1. Proposed Site Information and Drilling Strategy***

SITE: BBOR-1		PRIORITY:			POSITION: 28°15'N, 74°24.6'W
WATER DEPTH: 4715 m	SEDIMENT THICKNESS: 1000 m	TOTAL PENETRATION: 350 m
SEISMIC COVERAGE: Single channel seisimc Vema 2114; Vema 2401; 3.5kHz seismic KNR 31 and 140

Objectives: High resolution paleoclimate/paleoceanography; study of sediment wave migration & paleocurrents

Drilling Program: APC/XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated: Silty clays and silty marls

SITE:BBOR-1A		PRIORITY:			POSITION:  28°15'N, 74°26.4'W
WATER DEPTH: 4700 m	SEDIMENT THICKNESS: 1000 m	TOTAL PENETRATION: 350 m 
SEISMIC COVERAGE: 

Objectives:High resolution paleoclimate/paleoceanography; study of sediment wave migration & paleocurrents

Drilling Program: APC/XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated: Silty clays and silty marls

SITE: BBOR-1B		PRIORITY:			POSITION: 28°14.4'N, 74°24.6'W	
WATER DEPTH: 4700 m	SEDIMENT THICKNESS: 1000 m	TOTAL PENETRATION:  350 m 
SEISMIC COVERAGE: 

Objectives: High resolution paleoclimate/paleoceanography; study of sediment wave migration & paleocurrents

Drilling Program: APC, XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated:Silty clays and silty marls

SITE: BBOR-1C		PRIORITY:			POSITION: 28°14.7'N, 74°24.6'W
WATER DEPTH: 4700 m	SEDIMENT THICKNESS: 1000 m	TOTAL PENETRATION: 350 m 
SEISMIC COVERAGE: 

Objectives: High resolution paleoclimate/paleoceanography; study of sediment wave migration & paleocurrents

Drilling Program: APC, XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated: Silty clays and silty marls

SITE: BBOR-2	REPLACED BY BBOR-1A, 1B, & 1C		POSITION: 
WATER DEPTH: 	SEDIMENT THICKNESS: 			TOTAL PENETRATION: 
SEISMIC COVERAGE: 

Objectives: REPLACED

Drilling Program: REPLACED

Logging and Downhole Operations:  REPLACED

Nature of Rock Anticipated: REPLACED

SITE: BBOR-3		PRIORITY:			POSITION: 29°4.2'N, 72°54'W
WATER DEPTH:  4250 m	SEDIMENT THICKNESS: >300 m	TOTAL PENETRATION: 350 m 
SEISMIC COVERAGE: V2807, KNR140

Objectives: High resolution paleoclimate and study of sediment wave migration

Drilling Program: APC, XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated: Silty clays and silty marls

SITE: BBOR-4		WITHDRAWN AT PPSP		POSITION: 
WATER DEPTH: 		SEDIMENT THICKNESS:		TOTAL PENETRATION:  
SEISMIC COVERAGE: 

Objectives: WITHDRAWN

Drilling Program: WITHDRAWN

Logging and Downhole Operations:  WITHDRAWN

Nature of Rock Anticipated: WITHDRAWN

SITE: BBOR-4A		PRIORITY:			POSITION:  28°58.8'N, 73°34.8'W
WATER DEPTH: 3975 m	SEDIMENT THICKNESS: - m		TOTAL PENETRATION:  350 m
SEISMIC COVERAGE: 

Objectives: High resolution paleoclimate; Pliocene objectives 

Drilling Program: APC, XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated: Silty clays and silty marls

SITE: BBOR-5		PRIORITY:			POSITION:  30°43.8'N, 74°28.2'W
WATER DEPTH: 3430 m	SEDIMENT THICKNESS: >300 m	TOTAL PENETRATION:  350 m
SEISMIC COVERAGE: V2807, C2102, KNR140

Objectives: High resolution paleoclimate

Drilling Program: APC, XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated: Foram, nanno marls, or silty clays and marls

SITE: BBOR-6		PRIORITY:			POSITION: 31°40.2'N, 75°25.2'W
WATER DEPTH: 2975 m	SEDIMENT THICKNESS: >1000 m	TOTAL PENETRATION:  350 m
SEISMIC COVERAGE: CH1292 line 16, KNR140

Objectives: High resolution paleoclimate and study of current controlled deposits

Drilling Program: APC, XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated: Foram, nanno marls, or silty clays and marls

SITE:BBOR-7A	 	PRIORITY:			POSITION: 32°4.8'N, 76°10.2'W	
WATER DEPTH: 2585 m	SEDIMENT THICKNESS: >1000 m	TOTAL PENETRATION:  100 m
SEISMIC COVERAGE: Farnella 17, 18; KNR140

Objectives: High resolution paleoclimate

Drilling Program: APC, XCB

Logging and Downhole Operations:  None***

Nature of Rock Anticipated: Foram, nanno marls

SITE: BBOR-8B		PRIORITY:			POSITION: 32°28.8'N, 76°20.4'W
WATER DEPTH: 2164 m	SEDIMENT THICKNESS: >150 m	TOTAL PENETRATION:  200 m
SEISMIC COVERAGE: 

Objectives:  High resolution paleoclimate and study of continental slope processes

Drilling Program: APC, XCB

Logging and Downhole Operations:  None***

Nature of Rock Anticipated: Foram, nanno marls

SITE: BBOR-9		PRIORITY:			POSITION:  31°41.4'N, 75°25.8'W
WATER DEPTH: 2975 m	SEDIMENT THICKNESS: >1000 m	TOTAL PENETRATION:  350 m
SEISMIC COVERAGE: CH1292-16, KNR140

Objectives: High resolution paleoclimate and study of current controlled deposits

Drilling Program: APC, XCB

Logging and Downhole Operations:  Quad combo, geochemical, GHMT, and FMS logs***

Nature of Rock Anticipated: Foram, nanno marls, or silty clays and silty marls

SITE: BR-1		PRIORITY:			POSITION: 33°41.4'N, 57°37.2'W
WATER DEPTH: 4500 m	SEDIMENT THICKNESS: >1000 m	TOTAL PENETRATION:  300 m
SEISMIC COVERAGE: KNR31, IFP line BER 1

Objectives: High resolution paleoclimate and study of underconsolidation; Pliocene reference section

Drilling Program: APC, XCB

Logging and Downhole Operations: Quad combo, geochemical, GHMT, FMS, and dipole sonic logs***

Nature of Rock Anticipated: Silty clays and silty marls

SITE: BR-1A		PRIORITY:			POSITION: 33°41.4'N, 57°38.4'W
WATER DEPTH: 4469 m	SEDIMENT THICKNESS: >1000 m	TOTAL PENETRATION:  300 m
SEISMIC COVERAGE: 

Objectives: High resolution paleoclimate and study of underconsolidation; Pliocene reference section

Drilling Program: APC, XCB

Logging and Downhole Operations: Quad combo, geochemical, GHMT, FMS, and dipole sonic logs***

Nature of Rock Anticipated: Silty clays and silty marls

SITE: CS-2		PRIORITY:			POSITION:  32°46.8'N, 76°17.4'W
WATER DEPTH: 1790 m	SEDIMENT THICKNESS: >300 m	TOTAL PENETRATION:  200 m
SEISMIC COVERAGE: CH0692-41; Farnella 8, 16; CH9115-8, 9; CH0790; KNR140

Objectives: High resolution paleoclimate and study of continental slope processes

Drilling Program: APC, XCB

Logging and Downhole Operations:  No logging planned at this time***

Nature of Rock Anticipated:Foram, nanno marls

SITE: CS-3B		PRIORITY:			POSITION: 
WATER DEPTH: 1292 m	SEDIMENT THICKNESS: >300 m	TOTAL PENETRATION:  200 m
SEISMIC COVERAGE: Farnella 7, CH0692-43; KNR140

Objectives: High resolution paleoclimate and study of continental slope processes

Drilling Program: APC, XCB

Logging and Downhole Operations:  No logging planned at this time***

Nature of Rock Anticipated: Foram, nanno marls

***Proposed site and logging data were not finalized at time of publication.