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Table 1 Physical MTD parameters and identified kinematic indicators

From: Three-dimensional mapping and kinematic characterization of mass transport deposits along the outer Kumano Basin and Nankai accretionary wedge, southwest Japan

MTD Stratigraphic sequence and age Volume (km3) Area (km2) Average thickness (m) Runout (km) Translation direction Headwall domain Translational domain Toe domain (confined/emergent)
1 Kumano 4
0.9 Ma to 0.3–0.44 Ma
0.999 21.8 45.8 7.884 S ➔ N None LM: scarps, en-echelon sigmoidal segments
BSS: flats, grooves
IMB: translated block
TMS: second-order fabric
Confined: thrusts
2 Kumano 4
0.9 Ma to 0.3–0.44 Ma
0.03 1.5 20 1.729 SE ➔ NW Headwall LM: scarps
BSS: flats
IMB: none
TMS: none
Emergent: pressure ridges
3 Kumano 3
0.3–0.44 Ma to Present
0.358* 7.73* 46.3 3.238 SE ➔ NW None LM: scarps, en-echelon sigmoidal segments
BSS: ramps, flats
IMB: translated blocks
TMS: none
Confined: thrusts
4 Kumano 3
0.3–0.44 Ma to Present
1.155 14.15 81.62 5.741 SE ➔ NW Headwall LM: scarps, en-echelon sigmoidal segments
BSS: ramps, flats
IMB: translated Blocks
TMS: none
Mostly confined: thrusts
5 Kumano 3–2
0.3–0.44 Ma to Present
0.005 0.2 25 0.552 S ➔ N Headwall LM: scarps
BSS: ramps, flats
IMB: none
TMS: none
Mostly confined: thrusts, pressure ridges
6 Kumano 2–1
0.3–0.44 Ma to Present
0.297 13.1 22.7 4.136 S ➔ N None LM: scarps
BSS: ramps, flats
IMB: none
TMS: none
Emergent: none
7 Kumano 2–1
0.3–0.44 Ma to Present
0.031 1.2 25.8 1.508 SW ➔ NE Headwall LM: scarps
BSS: flats
IMB: none
TMS: none
Emergent: pressure ridges
  1. LM lateral margins, BSS basal shear surface, IMB internal MTD body, TMS top MTD surface
  2. *This is a pre-erosional estimate based on the assumption that 1/3 of the MTD was eroded by MTD 4