Reproducibility and accuracy of noble gas measurements on water samples in the microlitre range

2013 ◽  
Vol 28 (1) ◽  
pp. 42-48
Author(s):  
Tim Sander ◽  
Thomas Marx ◽  
Jürgen Engel ◽  
Werner Aeschbach-Hertig
Keyword(s):  
Water Samples ◽  
Noble Gas ◽  
Gas Measurements

Low level noble gas measurements in the field and laboratory in support of the Comprehensive Nuclear-Test-Ban Treaty

2004 ◽  
Vol 61 (2-3) ◽  
pp. 231-235 ◽  
Author(s):  
Trevor J Stocki ◽  
Marc Bean ◽  
R Kurt Ungar ◽  
Harri Toivonen ◽  
Weihua Zhang ◽  
...  
Keyword(s):  
Noble Gas ◽  
Nuclear Test ◽  
Low Level ◽  
Gas Measurements ◽  
Test Ban ◽  
Nuclear Test Ban ◽  
Test Ban Treaty

scholarly journals Investigating Fracture Network Deformation Using Noble Gas Release

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
W. Payton Gardner ◽  
Stephen J. Bauer ◽  
Scott Broome
Keyword(s):  
Isotopic Composition ◽  
Noble Gas ◽  
Gas Release ◽  
Fracture Networks ◽  
Discrete Sampling ◽  
Well Completion ◽  
Before And After ◽  
Sampling Intervals ◽  
Deformation Mechanics ◽  
Gas Measurements

We investigate deformation mechanics of fracture networks in unsaturated fractured rocks from subsurface conventional detonation using dynamic noble gas measurements and changes in air permeability. We dynamically measured the noble gas isotopic composition and helium exhalation of downhole gas before and after a large subsurface conventional detonation. These noble gas measurements were combined with measurements of the subsurface permeability field from 64 discrete sampling intervals before and after the detonation and subsurface mapping of fractures in borehole walls before well completion. We saw no observable increase in radiogenic noble gas release from either an isotopic composition or a helium exhalation point of view. Large increases in permeability were observed in 13 of 64 discrete sampling intervals. Of the sampling intervals which saw large increases in flow, only two locations did not have preexisting fractures mapped at the site. Given the lack of noble gas release and a clear increase in permeability, we infer that most of the strain accommodation of the fractured media occurred along previously existing fractures, rather than the creation of new fractures, even for a high strain rate event. These results have significant implications for how we conceptualize the deformation of rocks with fracture networks above the percolation threshold, with application to a variety of geologic and geological engineering problems.

Using groundwater noble gas measurements to confirm paleorecharge hypotheses at Pahute Mesa, Nevada National Security Site, Nevada, USA

2022 ◽  
Author(s):  
Ate Visser ◽  
Edward Kwicklis ◽  
Irene Farnham ◽  
Andrew F. B. Tompson ◽  
Ronald L. Hershey
Keyword(s):  
National Security ◽  
Noble Gas ◽  
Gas Measurements

Noble gas measurements in the L/LL5 chondrite Knyahinya

1997 ◽  
Vol 32 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Bernard LAVIELLE ◽  
Seraphin TOÉ ◽  
ERIC GILABERT
Keyword(s):  
Noble Gas ◽  
Gas Measurements

Accurate analysis of noble gas concentrations in small water samples and its application to fluid inclusions in stalagmites

2010 ◽  
Vol 272 (1-4) ◽  
pp. 31-39 ◽  
Author(s):  
Yvonne Scheidegger ◽  
Heinrich Baur ◽  
Matthias S. Brennwald ◽  
Dominik Fleitmann ◽  
Rainer Wieler ◽  
...  
Keyword(s):  
Fluid Inclusions ◽  
Water Samples ◽  
Noble Gas ◽  
Accurate Analysis ◽  
Small Water

Progress on Radiometric Dating of Wolfcamp Brines Using 4He and 40Ar

1983 ◽  
Vol 26 ◽  
Author(s):  
A. Zaikowski ◽  
B. J. Kosanke ◽  
N. Hubbard
Keyword(s):  
Ground Water ◽  
Water Samples ◽  
Noble Gas ◽  
Radioactive Decay ◽  
Gas Production ◽  
Radiometric Dating ◽  
Production Rates ◽  
Deep Wells ◽  
Hydrochemical Data ◽  
Radiometric Ages

ABSTRACTGround water samples (brines) from deep wells in the Palo Duro Basin, Texas are being analyzed for noble gases in an attempt to obtain radiometric ages for these brines. The brines contain radiogenic 4He and 40Ar produced from the radioactive decay of U, Th, and K. Consideration of hydrochemical data for the brines, various isotopic, chemical, and mineralogical data for the aquifer rocks and noble gas production rates allow estimating the age of the brines to be about 130 million years at two wells. At a third well interaquifer mixing has occurred and the age is presently indeterminate.

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