Structural Study of a Portion of the Lang and Humphreys Quadrangles, Los Angeles County, California
<p>In this report the area mapped north of the San Gabriel Mountains in the Lang and Humphreys Quadrangles is considered primarily from the structural point of view. A portion of this area at the head of Tick Canyon was mapped by Y. Bonillaas in 1933. During the year 1934-5, Mr. C. Dawson an...