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January 1, 1963

Reconnaissance geologic map of west-central Snake River plain, Idaho

No abstract available.

January 1, 1963

Simple Bouguer gravity map of Kentucky

No abstract available.

January 1, 1963

Structure-contour map of the Olive Hill Clay Bed in northeastern Kentucky

The gently dipping Olive Hill Clay Bed of Crider (1913) crops out in belt about 15 miles \vidc and 60 miles long from the Ohio River near Portsmouth, Ohio, south-southwesterly to Frenchburg, Ky. (see inset map).The purpose of the structure-contour map presented here is to aid exploration by showing the elevations at which the Olive Hill Clay Bed occurs. The strudure contours indicate the depths th

January 1, 1963

The Indian Ocean: The geology of its bordering lands and the configuration of its floor

The ocean realm, which covers more than 70 percent of the earth's surface, contains vast areas that have scarcely been touched by exploration. The best known parts of the sea floor lie close to the borders of the continents, where numerous soundings have been charted as an aid to navigation. Yet, within this part of the sea floor, which constitutes a border zone between the toast and the ocean dee

January 1, 1962