Priority: 1
Position: 5°04.1'S, 11°06.1'E
Water Depth: 1408 m
Sediment Thickness: >1000 m
Approved Maximum Penetration: 200 mbsf
Seismic Coverage: High-resolution multichannel seismic (MCS) survey, seismic Line GeoB 93
001 and 93-009
Objectives: The objectives of LCB-1 are to determine the:
1. variability of riverine input (Congo), and
2. history of opal, carbonate, and organic-matter deposition off Zaire (Congo).
Drilling Program: APC Holes A, B, C to 200 m or to refusal
Logging and Downhole: None
Nature of Rock Anticipated: Hemipelagic calcareous silty mud.
Drilling Program: APC Holes A, B, C to 200 m or to refusal
Logging and Downhole*: None
Nature of Rock Anticipated: Hemipelagic calcareous silty mud.
Seismic Line LCB-2
*Note: It is anticipated that this site may not be drilled, or only drilled for APC, depending on
time available. In the event that there is less than 250 m penetration, no logging or other downhole
measurements will be attempted.
Site: LCB-3A
Priority: 2
Position: 5°10.8'S, 10°26.2'E
Water Depth: 2392 m
Sediment Thickness: >1000 m
Approved Maximum Penetration: 200 m
Seismic Coverage: High-resolution MCS survey, seismic Lines GeoB 93-001 and -006
Objectives: The objectives of LCB-3A are to determine the:
1. variability of riverine input (Congo), and
2. history of opal, carbonate, and organic matter deposition off Zaire (Congo).
Drilling Program: APC core Holes A, B, C to 200 m or to refusal
Logging and Downhole: None
Nature of Rock Anticipated: Hemipelagic calcareous silty mud
Priority: 2
Position: 5°11.4'S, 10°22.0'E
Water Depth: 2506 m
Sediment Thickness: >1000 m
Approved Maximum Penetration: 200 m
Seismic Coverage: High-resolution MCS, seismic Lines GeoB 93-001 and -004
Objectives: The objectives of LCB-3B are to determine:
1. the variability of riverine input (Congo), and
2. the history of opal, carbonate, and organic-matter deposition off Zaire (Congo).
Drilling Program: APC Holes A, B, C to 200 m or to refusal
Logging and Downhole*: None
Nature of Rock Anticipated: Hemipelagic calcareous silty mud.
*Note: It is anticipated that this site may not be drilled, or only drilled for APC, depending on time available. In the event that there is less than 250 m penetration, no logging or other downhole measurements will be attempted.
Objectives: The objectives of LCB-3C are to determine:
1. the variability of riverine input (Congo), and
2. history of opal, carbonate, and organic matter deposition off Zaire (Congo).
Drilling Program: APC Holes A, B, C to 200 m or to refusal
Logging and Downhole*: None
Nature of Rock Anticipated: Hemipelagic calcareous silty mud.
*Note: It is anticipated that this site may not be drilled, or only drilled for APC, depending on time available. In the event that there is less than 250 m penetration, no logging or other downhole measurements will be attempted.
Priority: 1
Position: 4°47.1'S, 10°04.5'E
Water Depth: 3000 m
Sediment Thickness: >1000 m
Approved Maximum Penetration: 200 m
Seismic Coverage: High-resolution MCS survey, seismic Line GeoB 93-002
Objectives: The objectives of LCB-4 are to:
1. determine the variability of riverine input (Congo), and
2. determine the history of opal, carbonate, and organic-matter deposition off Zaire (Congo).
Drilling Program: APC core Holes A, B, C to 200 m or to refusal
Logging and Downhole: None
Nature of Rock Anticipated: Hemipelagic calcareous silty mud.
