
The SciencesApril 1, 1960
Sand
The geologist defines it as particles of rock between .05 and two millimeters in diameter. The shape of sand grains, transported by water and wind, is a clue to their history

Sand
The geologist defines it as particles of rock between .05 and two millimeters in diameter. The shape of sand grains, transported by water and wind, is a clue to their history