Geological Survey Bulletin 104 The Glaciation of the Yellowstone Valley North of the Park

Cover

Letter of transmittal

Outline of this paper

Introduction

General description of the region

The Yellowstone glacier

Limits of glaciation
Cinnabar Valley of the Yellowstone
     Bear Gulch and Sheep mountain
     Sepulcher mountain
     The valley bottom
     Cinnabar mountain
     Cinnabar basin
     Transportation of bowlders to higher levels
Yankee Jim canyon
Emigrant valley
     Mountain canyons
     Morainal heapings
     Morainal lakes
     Basalt tables
     Glacial stream channels
     Drift deposits
     Terraces
     Striated valley slopes
     Foothill canyons
     Relations of canyons to drift
     Origin of transverse canyons
     Glacial flood plain
     Alluvial terraces
     Discussion of evidence

The Boulder glaciers

General description
Névé fields
Canyons
Moraines
Terraces

Plate

I. Map showing the distribution of glacial drift in the Yellowstone valleys north of the National Park

II. Duck lake, a moraine dammed sheet of water

III. Mouth of Emigrant gulch showing glaciated mountain gorge open lug into Yellowstone valley

IV. Glaciated walls of Boulder canyon showing occupancy of entire canyon by ice

V. Distribution of Cretaceous Formations near Livingston, Montana

FIG.

1. Glacial terraces of marginal area, valley of the Yellowstone

UNITED STATES GEOLOGICAL SURVEY
J. W. Powell, Director