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Open-File Report 2008–1115

Geologic Field Notes, Geochemical Analyses, and Field Photographs of Outcrops and Rock Samples from the Big Delta B-1 Quadrangle, East-Central Alaska

By Warren C. Day and J. Michael O’Neill

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Open-File Report
2008-1115 PDF (5 MB)
Abstract

The U.S. Geological Survey, in cooperation with the Alaska Department of Natural Resources Division of Mining, Land, and Water, has released a geologic map of the Big Delta B-1 quadrangle of east-central Alaska (Day and others, 2007). This companion report presents the major element oxide and trace element geochemical analyses, including those for gold, silver, and base metals, for representative rock units and for grab samples from quartz veins and mineralized zones within the quadrangle. Also included are field station locations, field notes, structural data, and field photographs based primarily on observations by W.C. Day with additions by J.M. O’Neill and B.M. Gamble, all of the U.S. Geological Survey. The data are provided in both Microsoft Excel spread sheet format and as a Microsoft Access database.

Version 1.0

Posted June 2008

  • Database MDB (17.8 MB)
  • Database of field notes, geochemistry, and field photographs from the Big Delta B-1 quadrangle, Alaska.
  • Table 2 XLS (94 kB)
  • Major element oxide, trace element, gold, and rare earth element analyses.
  • Downloads Directory
  • Contains geologic field notes, geochemical data, field photographs, and a database related to this report.

Suggested citation:

Day, W.C., and O’Neill, J.M., 2008, Geologic field notes, geochemical analyses, and field photographs of outcrops and rock samples from the Big Delta B-1 quadrangle, east-central Alaska: U.S. Geological Survey Open-File Report 2008-1115, 14 p.



Contents

Abstract

Introduction

Analytical Geochemistry Methods

Geologic Field Notes

Field Photographs

Geologic Setting

Paleozoic Units

Mesozoic Units

Cenozoic Units

References Cited

 



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