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Economic resources of the northern Black Hills

The mining district of the Black Hills comprised within the Spearfish and Sturgis quadrangles was surveyed geologically in the summers of 1898 and 1899 under the direction of Mr. S. F. Emmons. The following pages present a brief summary of the geologic features, more especially with reference to ore-bearing formations. These are confined to the Algonkian and Paleozoic strata and their associated e
Authors
J.D. Irving, S. F. Emmons, T.A. Jaggar

Edgemont folio, South Dakota-Nebraska

No abstract available.
Authors
Nelson Horatio Darton, William Sidney Tangier Smith

Experiments on schistosity and slaty cleavage

Schistosity as a structure is important, and it is a part of the business of geologists to explain its origin. Slaty cleavage has further and greater importance as a possible tectonic feature. Scarcely a great mountain range exists, or has existed, along the course of which belts of slaty rock are not found, the dip of the cleavage usually approaching verticality. Are these slate belts equivalent
Authors
George Ferdinand Becker

Forest conditions in the Absaroka division of the Yellowstone Forest Reserve, Montana and the Livingston and Big Timber quadrangles

The tract of land here designated the Absaroka division of the Yellowstone Forest Reserve was originally the Absaroka Forest Reserve. By proclamation of January 29, 1903, this reserve was merged with the Teton and the Yellowstone forest reserves, the whole taking the name of the Yellowstone Forest Reserve. The western, northern, and eastern boundaries, as then established and as applicable to the
Authors
J. B. Leiberg

Forest conditions in the Black Mesa Forest Reserve, Arizona

The Black Mesa Forest Reserve, in Arizona, was created by proclamation of President McKinley dated August 17, 1898. The following are its boundaries; "Beginning at a point on the boundary line between Arizona and New Mexico where it is intersected by the north line of township seven (7) north, range thirty-one (31) east, Gila and Salt River meridian, Arizona; thence westerly along the township lin
Authors
F. G. Plummer, T. F. Rixon, Arthur Dodwell

Forest conditions in the Lincoln Forest Reserve, New Mexico

No abstract available.
Authors
F. G. Plummer, M.G. Gowsell

Forest conditions in the Little Belt Mountains Forest Reserve, Montana, and the Little Belt Mountains quadrangle

No abstract available.
Authors
J. B. Leiberg

Forest conditions in the San Francisco Mountains Forest Reserve, Arizona

On April 12, 1902, President Roosevelt issued a proclamation "for the purpose of consolidating into one reserve the lands heretofore embraced in the San Francisco Mountains Forest Reserves and of including therein the other adjacent lands within Francisco Mountains Forest Reserve, and is described by metes and bound as follows: ''Beginning at the northwest corner of township twenty-two (22) north,
Authors
J. B. Leiberg, T. F. Rixon, Arthur Dodwell, F. G. Plummer

Geographic tables and formulas (second edition)

No abstract available.
Authors
Samuel Stinson Gannett

Geology and water resources of part of the lower James River Valley, South Dakota

No abstract available.
Authors
J. E. Todd, Charles M. Hall

Geology of the Hudson Valley between the Hoosic and the Kinderhook

No abstract available.
Authors
T. Nelson Dale

Globe folio, Arizona

No abstract available.
Authors
F. L. Ransome