Crustal seismic reflection profile across the alpine fault and coastal plain at Whataroa, South Island

摘要: Abstract Crustal seismic reflection data recorded across the Alpine Fault and coastal plain at Whataroa in 1998 are used to derive shallow (4 seconds two-way time or s twt) deep (14 images a simple refraction model. A single 25 km long, 636 channel receiver array energy from 50 kg shots fired 1 intervals with intervening of 2.5 about 300 m along profile. Record quality varied good poor. Across Fault, basement lies 300–500 (0.2–0.5 twt), weak may be attributed Fault. Basement deepens sharply 6 northwest fault, 3 section probably Miocene younger sediments is imaged northwest. The southern boundary basin corresponds South Westland deeper distinct band strong reflectivity depth 9–10 twt, base which inferred Moho. Depth conversi...