Table T1. Expedition 319 drilling depth terms. (See table note.)

Depth
term
Depth term explanation
mbsf Meters below seafloor
DRF Drilling depth below rig floor (rotary table)
DSF Drilling depth below seafloor
CSF Core depth below seafloor
MRF Mud depth below rig floor (used for drilling mud cuttings and gas)
MSF Mud depth below seafloor (used for drilling mud cuttings and gas)
WRF Wireline log depth below rig floor
WMSF Wireline log matched depth below seafloor
LRF LWD depth below rig floor
LSF LWD depth below seafloor

Note: Depth terms are derived from IODP Depth Scales (www.iodp.org/program-policies/). LWD = logging-while-drilling.