LIST OF ILLUSTRATIONS 



Plates 



I. — A. Lower Half of South Fork Opposite Mill D. Big Cottonwood Can- 

 yon, Looking North. 

 B. Conglomerate at the Base of the Cambrian Quartzite in Little Cot- 

 tonwood Canyon, Just Below Alta. 

 II. — A. Photomicrograph of "Tillite" from the Head of South Fork. 

 B. Photograph of Hand Specimen of "Tillite" from South Fork. 

 III. — A. The Divide at the Head of South Fork and the Geologic Exposures 

 of the South End of the Reade and Benson Ridge. 

 B. Near View of the Upper Central Part of Fig. A. 



IV. — A. Alta Overthrust and Geologic Exposures on the North Slope of 

 Little Cottonwood Canyon. 

 B. Near View of the East-sloping Algonkian Quartzite shown on the 

 Ridge of Fig. A. 

 V. — Topographic Map of the Alta Region, Wasatch Mountains, Utah. 

 VI. — Geologic Map of the Alta Region, Wasatch Mountains, Utah. 

 VII. — The Lockatong Formation [map]. 

 VIII. — Hornblende Schist and Epidosite. 

 IX. — Pegmatite Dikes. 

 X. — Manhattan Schist and Augen Gneiss. 

 XI. — Specimens of Augen Gneiss. 

 XII. — Photomicrographs of Gneiss, Schist and Granodiorite. 

 XI 1 1. — Photomicrographs of Schist. 

 XIV. — Photomicrographs of Phyllite and Schist. 

 XV. — Outline Map of Southeastern New York. 



IV 



