Table 4 Characteristics of event deposits at Mugi Town
From: Geological record of prehistoric tsunamis in Mugi town, facing the Nankai Trough, western Japan
Event characteristics | E1 | E2 | E3 | E4 | E5 | E6 | E7 | E8 | E9 |
|---|---|---|---|---|---|---|---|---|---|
Number of locations observed | 11 | 4 | 11 or 12 | 4–8 | 2–9 | 1–4 | 1–4 | 1–4 | 3–6 |
Type of sediment | Sand | Sand | Granule-pebble | Sand | Sand | Sand | Sand | Sand | Granule-pebble |
aGrading | No | No | No | Multiple normal grading | No | No | No | No | No |
aMud clast | No | No | Yes | No | No | No | No | No | No |
aLaminae | No | No | No | No | No | No | Parallel | Parallel | No |
aLower contact | Unclear | Unclear | Unclear | Slightly sharp | Unclear | Sharp (deformed by bioturbation or load cast) | Unclear | Sharp | Not found |
aSubunits | No | No | No | bYes (2) | No | No | bYes (3) | No | No |
aOther sedimentological characteristics | No | Poorly sorted | Angular gravels, Poorly sorted | Sorted other than MG05 | Patchy sand | Poorly sorted | No | No | Angular gravels, poorly sorted |
aDiatoms assemblages within event deposits | Freshwater benthic | Freshwater benthic, brackish plankton | Brackish-marine | Mixture composition | Not analyzed | Brackish-marine | Brackish-marine | Brackish-marine | Not analyzed |