Mississippi

River

Lepanto, ArkansasLepanto, Arkansas

Marked Tree, ArkansasMarked Tree, Arkansas

Seismic profile locationSeismic profile location

9-km long P-wave reflection profile acquired May 9-19, 2006

Lepanto, Arkansas – May 2006

Thumper Minivibe I p-wave sourceRaw data from 3 miles west of Lepanto, Ar, except for BP filter 15-30-80-120 Hz, 200 ms AGC

(m)

Lepanto, Arkansas – May 2006 DowntownLepantobridge

Little Riverbridge

CretaceousCretaceousCretaceousCretaceous

PaleozoicPaleozoicPaleozoicPaleozoic

TertiaryTertiaryTertiaryTertiary

Preliminary Data – No Peer Review1 km

4:1 vertical exageration

West East

QuaternaryQuaternaryQuaternaryQuaternary

Preliminary Data

Thumper Minivibe I p-wave source – Stk 5, precorrelation AGC 200 ms, prestack BP filter 15-20-90-120 Hz, 60 Hz notch, surface wave mute, single fn estimate nmo 30% stretch, rstat1, post stack fx decon, bp filt 20-30-90-120, 1-9-07