The thickness and structure of the crust of the earth have been studied in a limited area of southern California by means of reflected and refracted seismic waves. Two usable records of reflections from the Mohorovičić discontinuity at nearly vertical incidence were obtained from large quarry blasts. Each record shows a strong reflection with tr...

The thickness and structure of the crust of the earth have been studied in a limited area of southern California by means of reflected and refracted seismic waves. Two usable records of reflections from the Mohorovičić discontinuity at nearly vertical incidence were obtained from large quarry blasts. Each record shows a strong reflection with tr...

The thickness and structure of the crust of the earth have been studied in a limited area of southern California by means of reflected and refracted seismic waves. Two usable records of reflections from the Mohorovičić discontinuity at nearly vertical incidence were obtained from large quarry blasts. Each record shows a strong reflection with tr...

The thickness and structure of the crust of the earth have been studied in a limited area of southern California by means of reflected and refracted seismic waves. Two usable records of reflections from the Mohorovičić discontinuity at nearly vertical incidence were obtained from large quarry blasts. Each record shows a strong reflection with tr...