Table T1. Operations plan and time estimate for primary sites, ODP Leg 209.
Site | Location (lat/long) | Water depth (mbrf) | Operations description | (hrs) | Total transit (days) | Total coring (days) | Total logging (days) | Total on-site (days) |
22.53°S, 43.17°W | Begin leg in Rio de Janeiro, Brazil | |||||||
Transit ~2246 nmi from Rio de Janeiro to MAR-4S @ 10.5 kt | ||||||||
MAR-4S | 14.8488°N | 3011 | Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) | |||||
45.0822°W | (wireline logging with triple combo and FMS-sonic) | 0.6 | 6.2 | |||||
Transit ~5 nmi from MAR-4S to MAR-3S @ 10.5 kt | 2.0 | 0.1 | ||||||
MAR-3S | 14.9324°N | 2861 | Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) | |||||
45.0713°W | (wireline logging with triple combo and FMS-sonic) | 0.6 | 5.5 | |||||
Transit ~53 nmi from MAR-3S to MAR-1S @ 10.5 kt | 5.0 | 0.2 | ||||||
MAR-1S | 15.1090°N | 2911 | Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) | |||||
44.9590°W | (wireline logging with triple combo and FMS-sonic) | 0.6 | 5.5 | |||||
Transit ~105 nmi from MAR-1S to MAR-1N @ 10.5 kt | 10.0 | 0.4 | ||||||
MAR-1N | 15.6478°N | 3981 | Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) | |||||
46.6759°W | (wireline logging with triple combo and FMS-sonic) | 15.0 | 0.6 | 6.0 | ||||
Transit ~6 nmi from MAR-1N to MAR-2N @ 10.5 kt | 2.0 | 0.1 | ||||||
MAR-2N | 15.5480°N | 3911 | Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) | 127.0 | 5.3 | |||
46.6870°W | (wireline logging with triple combo and FMS-sonic) | 15.0 | 0.6 | 5.9 | ||||
Transit ~3 nmi from MAR-2N to MAR-3N @ 10.5 kt | 2.0 | 0.1 | ||||||
MAR-3N | 15.5000°N | 3451 | Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) | 123.0 | 5.1 | |||
46.6810°W | (wireline logging with triple combo and FMS-sonic) | 14.0 | 0.6 | 5.7 | ||||
Transit ~104 nmi from MAR-3N to MAR-2S @ 10.5 kt | 10.0 | 0.4 | ||||||
MAR-2S | 15.0390°N | 3611 | Hole A: Bare rock spud/RCB core minimum 100+ mbsf half cores) | 132.0 | 5.5 | |||
44.9530°W | (wireline logging with triple combo and FMS-sonic) | 15.0 | 0.6 | 6.1 | ||||
Transit ~1482 nmi from MAR-2S to Bermuda @ 10.5 kt | 142.0 | 5.9 | ||||||
32.18°N, 64.48°W | End leg in Hamilton, Bermuda | |||||||
SUBTOTAL: | 16.1 | 36.8 | 4.2 | 41.0 | ||||
TOTAL OPERATING HOURS/DAYS (incl. 5.0 day port call): | 1490.0 | 62.1 | ||||||
Note 1: multiple spud attempts may be required at each site in order to advance a single RCB hole to minimum of 100 mbsf. | ||||||||
Note 2: penetration depths beyond 100 mbsf are desired and will be pursued if hole conditions allow. | ||||||||
Note 3: wireline logging may be problematic at all or some of the drilling locations. As a result, RAB-C logging-while-coring (LWC) will likely be substituted for conventional RCB coring and/or wireline logging at selected sites. | ||||||||
Note 4: desired coring approach is to cut/recover RCB half cores using non-magnetic core barrels with chrome plated ID. |