USGS Logo Geological Survey Professional Paper 294—K
The Rocks and Fossils of Glacier National Park: The Story of Their Origin and History

TABLE OF CONTENTS

Cover

Abstract

Introduction

Geographic setting

The Belt sea and its inhabitants

Prelude to mountain building

The Lewis overthrust

Landscapes after the overthrusting

The glaciers

Selected bibliography

Appendix

A. Age and character of the rock units of Glacier National Park and vicinity

B. Approximate geologic time scale

C. Classification of fossil algae

D. Key to the identification of fossil algae

E. Glossary

Index (omitted from the online edition)



ILLUSTRATIONS

PLATE

51. Shaded relief map of Glacier National Park. (omitted from the online edition)

52. Map of northwestern Montana, showing the principal topographic features and the outlines of quadrangles that have been topographically surveyed in and near Glacier National Park. (omitted from the online edition)

53. Block diagrams illustrating stages in the development of the Lewis overthrust. (omitted from the online edition)

FIGURE

122. Gunsight Pass and Mount Jackson

123. Collenia frequens Walcott in the Collenia frequens zone, near Appekunny Falls

124. The Garden Wall, as seen from the top of Mount Oberlin

125. Mass of Conophyton inclinatum Rezak in Conophyton zone 1, on Going-to-the-Sun Highway, 6.4 miles west of Logan Pass

126. Cryptozoon occidentale Dawson in Missoula group, in railroad cut about 3 miles southeast of Nyack

127. Collenia multiflabella Rezak in Collenia multiflabella zone, on east side of Logan Pass

128. Inclusionlike patterns etched in Siyeh limestone, in road cuts northwest of Logan Pass

129. "Molar tooth" structures, in road cuts northwest of Logan Pass

130. Sill in Siyeh limestone on east face of Mount Gould, as seen from Cataract Mountain

131. View of Pollock Mountain and the headwaters of Cataract Creek, showing two sills in Siyeh limestone, as seen from the southwest flank of Allen Mountain

132. Collenia undosa Walcott in Collenia undosa zone, in cirque facing Logan Pass between Mount Oberlin and Claments Mountain

133. Collenia symmetrica Fenton and Fenton in Collenia symmetrica zone 2, at Great Northern Railway tracks along Bear Creek

134. Conophyton inclinatum Rezak in Conophyton zone 2, along Great Northern Railway tracks near juncture of Devil Creek and Bear Creek

135. Conophyton inclinatum Rezak in Conophyton zone 2, along Great Northern Railway tracks near juncture of Devil Creek and Bear Creek

136. Collenia frequens Walcott in Conophyton zone 2, at top of Running Rabbit Mountain

137. Folded rocks of the Belt series on McPartland Mountain, as seen from the trail to Sperry Glacier

138. Contorted quartzite in the Grinnell argillite, Two Medicine Pass

139. The Lewis overthrust on Summit Mountain, as seen from Marias Pass

140. Chief Mountain from the northeast, as seen from the East Fork of Lee Creek

141. View west across St. Mary River valley toward Yellow Mountain and Chief Mountain, showing the very irregular eastern margin of the Lewis Range

142. A stage in the development of the present topography in Glacier National Park: Topography after the Blackfoot surface had formed

143. A stage in the development of the present topography in Glacier National Park: Topography at about the middle of Pleistocene time, early in the stage of accelerated erosion that preceded the main Wisconsin glacial advance

144. A stage in the development of the present topography in Glacier National Park: Topography at the present time


A simple, nontechnical explanation of the geological process that created the magnificent scenery

UNITED STATES DEPARTMENT OF THE INTERIOR
FRED A. SEATON, Secretary

GEOLOGICAL SURVEY
Thomas B. Nolan, Director

The U. S. Geological Survey Library has cataloged this publication as follows:

Ross, Clyde Polhemus, 1891—
The rocks and fossils of Glacier National Park: the story of their origin and history, by Clyde P. Ross and Richard Rezak. Washington, U. S. Govt. Print. Off., 1959.
iii, 401-439 p. illus., 2 col. maps, col. diagr., tables. 30 cm. (U. S. Geological Survey. Professional Paper 294—K. Shorter contributions to general geology)
Maps and diagr. in pocket.
Bibliography: p. 430, 434.
1. Geology—Montana. 2. Glacier National Park. 3. Paleontology—Montana. I. Rezak, Richard, 1920- joint author. II. Title (Series: U. S. Geological Survey. Professional paper 294—K. Series: U. S. Geological Survey. Shorter contributions to general geology.)

557.8652




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Last Updated: 08-Jul-2008