acknowledge the help of T. B. Nolan, who provided valuable geologic orientation in the field. DESCRIPTION OF TABLE 1. Rock geochemical analyses Col. 1 sample Sample numbers corresponding to numbers shown on plate 1. Cols. 2-3 X-Coord. and Y-Coord. The X value is an E-W distance and the Y value, a N-S distance. These are distances in feet using the 10,000-foot grid based on the Nevada coordinate system, east zone, as given on the base maps for plate 1. Multiply values given in the table by 10 to get actual map coordinates. Cols. 4-24 S-(element symbol) Spectrographic determinations. All values are given in parts per million (ppm) unless a "%" sign is present. Col. 25 AA-Au Atomic absorption determinations. Gold values in ppm. Col. 26 Inst-HG Flameless atomic absorption determinations. Mercury values in ppm. Cols. 27-28 AA-(element symbol) Atomic absorption determinations. Values, in ppm, for lead, zinc, and silver, respectively. Cols. 30-31 CM-(element symbol) Colorimetric determinations. Values, in ppm, for arsenic and antimony, respectively. DESCRIPTION OF TABLE 2. Fine-and coarse-soil geochemical analyses Col. 1 sample Sample numbers, for fine-and coarse-soil pairs, corresponding to numbers shown on plate 1. Cols. 2-3 X-Coord. and Y-Coord. The X value is an E-W distance and the Y value, a N-S distance. These are distances in feet using the 10,000-foot grid based on the Nevada coordinate system, east zone, as given on the base maps for plate 1. Multiply values given in the table by 10 to get actual map coordinates. Cols. 4-27 S-(element symbol) Spectrographic determinations. All values are given in parts per million (ppm) unless a "%" sign is present. Col. 28 AA-Au Atomic absorption determinations. Gold values in ppm. Col. 29 Inst-HG Flameless atomic absorption determinations. Mercury values in ppm. Cols. 30-32 AA-(element symbol) Atomic absorption determinations. Values, in ppm, for lead, zinc, and silver, respectively. Cols. 33-34 CM-(element symbol) Colorimetric determinations. Values, in ppm, for arsenic and antimony, respectively. Leaders (-) indicate that no analysis was made for that particular sample and element.

No abstract

Analytical results and sample locality map of rock samples from the Hayfork 30' x 1° quadrangle (northwest quarter of the Redding 1° x 2° quadrangle), Humboldt and Trinity Counties, California

No abstract