Summary

This booklet contains highlights from twenty publications that represent
most of the research fields served by the USGS – Stanford Ion Microprobe
Laboratory (the principal facility of SUMAC, the Stanford USGS Micro
Analysis Center). The papers also were chosen to illustrate the breadth of
use by scientists from the USGS, Stanford, and other institutions. A
complete bibliography of over 130 citations, as of July 2005, is posted at
http://shrimprg.stanford.edu.

 

 

Contents
U–Th geochronology of young intrusions beneath volcanoes...................1–3
Pleistocene ash bed dated by U–Pb geochronology ................................... 4
Pleistocene intrusive history beneath a geothermal field ............................. 5
U-series dating of Yucca Mountain opal covering the last million years ....... 6
Uplift and subsidence of the Great Basin ................................................. 7
Strontium:calcium ratios and paleotemperatures from coral ........................ 8
Strontium isotopes and salmon migration .................................................. 9
Dating young oceanic crust .................................................................... 10
Detrital zircons in sedimentary rocks....................................................11–13
Appalachian basement geochronology ...................................................... 14
Archean impacts and tectonics.............................................................15–16
Dating mineralization...........................................................................17–19
Sulfur isotopes in a gold deposit ............................................................... 20


 

 


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