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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