CONTENTS. 9 
The Bonnifield and Kantishna regions — Continued. Page. 
The Bonnifield placer region — Continued. 
The creeks — Continued. 
Tatlanika drainage — Continued. 
Roosevelt Creek 211 
Hearst Creek 211 
Gold. King Creek 212 
Summary 212 
The Kantishna placer region 213 
General description 213 
The creeks 214 
Spruce Creek 214 
Glen Creek : 215 
Eureka Creek 215 
Friday Creek 217 
Glacier Creek , 218 
Caribou Creek 218 
Summary 219 
Coal deposits 221 
General description 221 
Local occurrences 223 
Healy Creek 223 
Lignite Creek. „ 225 
Other areas 226 
ILLUSTRATIONS. 
Page. 
Plate I. Map of Alaska, showing distribution of gold- and copper-bearing rocks, 
so far as known 22 
II. Map of Alaska, showing distribution of coal and coal-bearing rocks, 
so far as known 40 
III. Map of southeastern Alaska, showing distribution of mineral deposits 
and areas of intrusive rocks 48 
IV. Sketch map of Bonnifield and Kantishna regions 206 
Fig. 1. Map of Controller Bay oil field, showing position of wells and seepages. . 89 
2. Geologic sketch map of region northeast of Cook Inlet 106 
3. Cross section showing relation of anthracite to intrusive diabase near 
Purinton Creek 110 
4. Sketch showing location of Chickaloon tunnels 112 
5. Sketch map of southern Seward Peninsula, showing the area covered 
by detailed topographic maps 127 
6. Sketch map showing the known parts of the second and third beaches 
at Nome and their hypothetical continuations 134 
7. Diagram showing the manner in which gold is concentrated north of 
Nome in shallow depressions or cusps of the third beach 141 
8. Sketch map of Iron Creek basin ". 158 
9 . Sketch map of Kougarok region 165 
