Biennial Report

Front Cover
 

Other editions - View all

Common terms and phrases

Popular passages

Page 112 - BULLETIN 290. Preliminary report on the operations of the fuel-testing plant of the United States Geological Survey at St. Louis, Mo., 1905, by JA Holmes. 1906.
Page 263 - Gumbo clay is black, owing to the high percentage of organic or vegetable matter it contains. It is particularly sticky in its nature, and is almost wholly free from sand and grit. After it has been burned, however, the plasticity is entirely destroyed, and a light clinker is formed which, though not particularly hard, when pulverized forms a smooth surface and seems to wear well. It should be understood that not all of the clay out of which the road is to be constructed is to be clinkered, but only...
Page 217 - Lydian stone, varying from the size of a hazel nut to that of a pigeon's egg. The natives give to this last the name of
Page 67 - The formation is composed of white clays at the bottom, on which rest a coarse sandstone filled in places with large pebbles; this is overlain by about 100 feet of calcareous clays which in turn are overlain by more than 100 feet of fine-grained greenish sandstone. These deposits represent all three divisions of the White River group, the lower or Titanotherium beds, the middle or Oreodon beds, and the upper of Protoceras beds. Another locality, was discovered in 1905 by Mr. Earl Douglass in southwestern...
Page 67 - These rest upon white calcareous clay, rocks, and marls of a total thickness of 100 feet. These probably also belong to the White River epoch, but contain no fossils. Below this deposit is a third bed of drab clay, which swells and cracks on exposure to weather, which rests on a thick bed of white and gray sand, more or less mixed with gravel. This bed, with the overlying clav, probably belongs to the Laramie period, as the beds lower in the series certainly do.
Page 67 - I have within the last week discovered the locality of a new lake of the White River epoch, at a point in this Territory nearly 200 miles northwest of the nearest boundary of the deposit of this age hitherto known. The beds, which are unmistakably of the White River formation, consist of greenish sandstone and sand beds of a combined thickness of about 100 feet. These rest upon white calcareous clay, rocks, and marls of a total thickness of 100 feet. These probably also belong to the White River...
Page 117 - Boulder Belts distinguished from Boulder Trains — their Origin and Significance, " Bulletin, GSA, vol. i, pp. 27-31. " The Nature of the Englacial Drift of the Mississippi Basin,
Page 46 - Gilmore. is dark gray, but weathered surfaces, especially when moist, frequently have a greenish gray or olive color. Beds of brown, carbonaceous clay shale are very common and conspicuous. The strata also contain much dark brown, ferruginous material, occurring both in thin seams and concretions, the latter being most numerous at certain horizons, and fragments of these cover the slopes in many places.
Page 184 - Mississippi farther east, bears fine scratches and markings, called striœ, like those which are found beneath the glaciers of the Alps. Only one cause is known which can produce markings like these, and this is the rasping of stones and boulders frozen in the bottom of a moving mass of ice, accumulated upon the land in a solid sheet of great extent and depth. As these striae are found upon the rocky surface of British America and of the northern United States to a southern limit that coincides approximately...
Page 19 - Sir: — I beg to submit herewith my report on the work of the Division of Animal Industry since the last meeting of this Board on February 24, 1911.

Bibliographic information