The sepia-toned photos he took while swimming out in the water give the waves a solid, geologic look.
The U.S. Geologic Survey, meanwhile, reported that aftershocks were likely.
Upon the precession of the equinoxes they erect a fabric of retrograde chronology, and set a clock to geologic time.
The four scientists discussed the problem and referred to geologic maps.
Then the force so long pent up and held in suspense is set free; the stored-up heat of the geologic ages is brought out for use.
The location of best sources of supply for ballast is also a geologic problem (see pp. 90-91).
But what, it has been asked, was a brief period of three thousand years, compared with the geologic ages?
