A quantitative consideration of several calderas for study of their formation.

摘要: Gravimetric data have been accumulated on 22 calderas mainly in Japan. For some, explosion-seismic or drilling results are also available. Synthesizing these data, some common features of their subsurface structure deduced. Although all Japanese relatively young, ranging age from 6 000 to 100 Y.B.P., a general discussion them as whole is tried: the mass deficiencies obtained by gravity anomalies over close correlation with diameters. This similar that meteorite craters Canada, implying similarity between and craters.