Zinc and lead deposits of northern Arkansas

The field work on which this report is based was carried on during the months of July, August, and September, 1902. The writer was assisted by Prof. A. H. Purdue, of the University of Arkansas, and Mr. Ernest F. Burchard. The larger portion of the time was used in the detailed examination and study of the Yellville quadrangle, which is between 36° and 36° 30' and meridians 92° 30' and 93°, and embraces Marion County, the northern border of Searcy County, the eastern border of Boone County, and the northeastern corner of Newton County. The adjacent country, which is usually recognized as mineral bearing, was examined in a general way. Mr. E. O. Ulrich was in the field two weeks collecting fossils and studying the rocks for the purpose of correlation, and Dr. George H. Girty devoted a week to a portion of the section in an adjacent area.