RandyT0001
SOC-13
Maybe like Yellowstone Park? I think the Yellowstone volcano is a different type but the caldera may be about the right size. If Earth didn't have a thick atmosphere and rainfall how big would it have been I wonder?Originally posted by Straybow:
Mauna Loa is, what, over 10km from sea floor to peak? If you could make an Olympic-size shield volcano on an Earthlike planet it wouldn't last long. It would collapse as soon as it moved off the hot spot, leaving a giant, jaggy caldera. Would still be cool.
Another point Mars doesn't have plate tectonics like Earth. I wonder how tall Mauna Loa would have been without erosion and plate tectonics. I guess you could get an estimate by adding up the volumes of the various sea mounds that spread across the Pacific to the northwest of Hawaii toward the subduction trench close to Japan. If all that material had been built upon itself how tall would it be?