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Report on the geology of the Henry Mountains

Chapter 1: REPORT ON THE GEOLOGY OF THE HENRY MOUNTAINS.
By Grove Karl Gilbert
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About This Book

A systematic geological survey of a compact mountain range on the Colorado Plateaus that combines field descriptions of individual peaks and formations with structural interpretation. The text analyzes laccolite intrusions and includes a detailed study of their rocks and origin, traces uplift and erosional history, and develops mechanical explanations for folding and flexure. It also treats processes of weathering, transport, and corrasion, formulates principles of land sculpture, examines drainage system development and stability, and closes with practical observations on mineral and land-use implications.

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Title: Report on the geology of the Henry Mountains

Author: Grove Karl Gilbert

Contributor: Clarence E. Dutton

Release date: January 16, 2025 [eBook #75119]

Language: English

Original publication: Washington: Government Printing Office, 1877

Credits: Richard Tonsing and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)

*** START OF THE PROJECT GUTENBERG EBOOK REPORT ON THE GEOLOGY OF THE HENRY MOUNTAINS ***

Transcriber’s Note:

New original cover art included with this eBook is granted to the public domain.

Frontispiece.—Half-stereogram of Mount Ellsworth, drawn to illustrate the form of the displacement and the progress of the erosion.

The base of the figure represents the sea-level. The remote half shows the result of uplift alone; the near half, the result of uplift and erosion,
or the actual condition. (See page 95.)

DEPARTMENT OF THE INTERIOR.
U. S. GEOGRAPHICAL AND GEOLOGICAL SURVEY OF THE ROCKY MOUNTAIN REGION.
J. W. POWELL, in Charge.

REPORT
ON THE
GEOLOGY OF THE HENRY MOUNTAINS.

By G. K. GILBERT.
WASHINGTON:
GOVERNMENT PRINTING OFFICE.
1877.
Department of the Interior,
U. S. Geographical and Geological Survey
of the Rocky Mountain Region,
Washington, D. C., March 5, 1877.

Sir: I have the honor to transmit herewith a report on the Geology of the Henry Mountains, by Mr. G. K. Gilbert.

I am, with great respect, your obedient servant,
J. W. POWELL,
In charge.
The Hon. Secretary of the Interior,
Washington, D. C.
Department of the Interior,
U. S. Geographical and Geological Survey
of the Rocky Mountain Region,
Washington, D. C., March 1, 1877.

Dear Sir: I submit herewith my report on the Geology of the Henry Mountains, prepared from material gathered under your direction in the years 1875 and 1876.

I am, with great respect, your obedient servant,
G. K. GILBERT.
Prof. J. W. Powell,
In charge.