WRIR 00-4014
Quality Assurance and Analysis of Water Levels in Wells on Pahute Mesa and Vicinity, Nevada Test Site

CONTENTS

Abstract
 Introduction 
Water-Level Measurements
Sources of Water-Level Fluctuations 
Analysis of Water Levels
 Summary
 References Cited
 Appendix 1
 Appendix 2
Table 2. Principal stratigraphic units and lithologies in open intervals of wells on Pahute Mesa and vicinity, Nevada Test Site (modified from Laczniak and others, 1996, table 1)
Geologic
 system		 Stratigraphic unit Principal lithology

Tertiary

Timber Mountain Group (Tm)

Variably welded ash-flow tuff and rhyolite lava

Paintbrush Group (Tp)

Variably welded ash-flow tuff and rhyolite lava

Calico Hills Formation (Ta)

Rhyolite lava and nonwelded tuff

Crater Flat Group (Tc)

Variably welded ash-flow tuff and rhyolite lava

Belted Range Group (Tb)

Variably welded ash-flow tuff and rhyolite lava

pre-Belted Range Group volcanics1

Variably welded ash-flow tuff and rhyolite lava

Mississippian

Chainman Shale (Mch)

Siltstone

1 This stratigraphic unit is a generic category, not used in Laczniak and others (1996), that includes all Tertiary volcanic rocks units older than the Belted Range Group.

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Last modified: Tuesday, July 18, 2000