PROCEEDINGS OF THE ACADEMY AND AFFILIATED 



SOCIETIES 



GEOLOGICAL SOCIETY OF WASHINGTON 



The 324th meetmg was held in the lecture room of the Cosmos Club 

 on January 9, 1918. 



REGULAR PROGRAM 



Frank J. Katz: Pleistocene shore lines in Maine and New Hamp- 

 shire. Uplifted beaches and deltas in the coastal counties, Cumber- 

 land and York, Maine, and Strafford and Rockingham, New Hampshire, 

 lie near the margins and somewhat higher than adjacent deposits of 

 late Wisconsin marine clays. The shore structures discussed are those 

 at maximum elevations in the several localities and constitute a cor- 

 related series rising progressively from 155 feet above sea level in 

 Stratham, New Hampshire, to 300 feet in Pownal, Maine, and higher 

 at points farther west and north. They indicate that the postglacially 

 uplifted surface has been tilted 5 to 6 feet per mile in a direction 40°E. 

 of S., and that the lines of equal elevation approximately parallel the 

 shore of the Gulf of Maine. 



M, R. Campbell: Subdivisions of the Allegheny Plateaus. No 

 abstract. 



The 325th meeting was held in the lecture room of the Cosmos Club 

 on February 13, 1918. 



INFORMAL COMMUNICATIONS 



Mr. J. Newton Baker presented an appeal for the National War 

 Savings Committee for the purchase of War Savings Stamps by members 

 of the Society. 



REGULAR PROGRAM 



Bertram L. Johnson: The Valdez delta. The Valdez delta is the 

 dominant member of a group of youthful confluent deltas surrounding 

 the head of Port Valdez, Prince William Sound, Alaska. It is an 

 advancing; steep-fronted delta formed in a rugged, mountainous coun- 

 try under glacial or near glacial climatic conditions, the torrential, 

 heavily debris-laden, aggrading streams from the Valdez Glacier in 

 summer dropping their load suddenly and within short distances in 

 deep, quiet, oceanic waters. The subaerial portion of the delta has an 



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