Posted by Sam Elton on June 09, 1998 at 15:56:30:
1972 Mariner IX revealed strong correlation between gravity highs and volcanoes on Mars (Bruce Murray). 1982 Roger Phillips remarked on the "coincidence of large anomalies in Venus's gravity field with young volcanic features." 1992 MAGELLAN showed 100% correlation between excessive gravity and volcanism. Same for Earth's volcanic regions, "hot spots" (Iceland.. even Yellowstone.) Big new question: Is gravity affected by temperature? Will send outline of new book on subject at your request.