Table T1. Overview of MTL positions, logging times, and instrument drift.
 MTL
number
Hole
Position
Depth
(mbsf)
Logging time (UTC)
Time offset
(hr)
Start
Stop
1854115B 1255A Overthrust section 135.1 4 Sept 2002, 1800 hr 6 Sept 2004, 1827 hr –00:07:25
1854120B 1255A Décollement zone 140.4 7 Sept 2002, 0000 hr 7 Sept 2004, 2132 hr –00:06:40
1854121B 1253A Shallow basement 501.4 4 Sept 2002, 1800 hr 8 Sept 2004, 0535 hr 00:01:52
1854131B* 1253A Deeper basement 514.8 4 Sept 2002, 1800 hr 3 Oct 2004, 2154 hr NA

Notes: MTL = miniaturized temperature logger, UTC = Universal Time Coordinated. * = lost on seafloor and hopefully recovered at next visit, NA = not available.