Kentland Dome: Geologic Enigma (GM-16)
Since the 1880's, geologists have known about the Kentland structure. Many attempts have been made to explain its origin. One theory is that a meteorite ht the earth and caused a large crater like those on the moon, while another is that trapped gases from deeply buried vulcanism caused the faulting. Geologic evidence does not yet allow conclusion about the origin of the Kentland structure, so it continues to remain an enigma.
Our Hoosier State Beneath Us: Geomorphology