The Evolution of the Pacific
Deep-sea drilling shows that the bottom of the western Pacific basin is different from the bottom of the eastern basin. The slow movement of the crust underlying the basin seems to account for the difference
Tektites and Geomagnetic Reversals
The glassy stones strewn from the Indian Ocean to the South Pacific have an age that is coincident with the last reversal of the earth's magnetic field. Can both be attributed to the fall of a cosmic body?
The Rift in the Ocean Floor
The discovery of a world-wide undersea mountain range that has a deep fissure down its center has suggested to some geologists that the earth may be slowly expanding rather than contracting
The Origin of Submarine Canyons
Many theories have been proposed to account for these rugged features of the earth's crust. It now seems that they are cut by streams of turbid water which flow along the ocean bottom