NOTES ON THE POINT -HOPE SPIT, ALASKA 179 
land and beach deposits. We are here concerned only with the latter. 
The delta deposits are easily distinguished as a rule and usually 
consist of interstratified silts and sands overlaid by fine black sediments 
which are often interbedded with peat-like accumulations of marsh 
grass turf.’ 
t Mr. A. J. Collier gives a brief description of the delta deposits in a report on the 
Cape Lisburne coals, Bull. U. S. G. S., No. 278, p. 33, 1906. 
Fic. 1.—Outline map of Alaska, showing by rectangle the area of the Point Hope map. 
