Vol. 16 No. 1 (1976)
Articles

MAGNETIC COMPARISON OF EXPLOSION CRATERS AND VOLCANIC CONES

ROMAN ALVAREZ
Instituto de Geofisica,UNAM
LUCRECIA MAUPOME
Centro de Investigacion IPN and Instituto de Astronomia,UNAM
ARIEL TEJERA RIVERA
Instituto Nacional de Energia Nuclear

Published 1976-01-01

How to Cite

ALVAREZ, R., MAUPOME, L., & TEJERA RIVERA, A. (1976). MAGNETIC COMPARISON OF EXPLOSION CRATERS AND VOLCANIC CONES. Geofísica Internacional, 16(1), 63-94. https://doi.org/10.22201/igeof.00167169p.1976.16.1.927

Abstract

The magnetic responses of various volcanic structures show that cinder cones systematically present the strongest magnetic responses, while explosion craters with ash rings appear to be weakly magnetized. Structures that are of the collapse type, which May or not be associated with an explosive origin, do not show systematic magnetic behavior. These results suggest that ash rings appear when the initial explosion is shallow, while deep explosions tend to produce surface features of the collapse type. The inference is made that the intrusive rhyolites known as Las Derrumbadas in the Oriental-Serdan Basin may be a geothermal source.