Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Thermal and isotopic profiling of the Pipeline hydrothermal system: Application to exploration for Carlin-type gold deposits
 

Summary: Thermal and isotopic profiling of the Pipeline hydrothermal system:
Application to exploration for Carlin-type gold deposits
Greg B. Arehart a,, Raymond A. Donelick b
a
Department of Geological Sciences, University of Nevada, Reno, Reno, NV 89557, United States
b
Apatite to Zircon, Inc., 1075 Matson Rd., Viola ID 83872, United States
Received 9 March 2005; accepted 28 December 2005
Available online 20 March 2006
Abstract
New exploration techniques are vital to the search for new orebodies in mature terranes, as well as for extensions of existing
orebodies. This research focused on application of low-temperature dating techniques (primarily apatite fission-tracks) and stable
isotope measurements (carbon and oxygen in carbonate rocks) in and around the Pipeline deposit, a Carlin-type gold system. The
primary purpose of the project was to assess whether these techniques could provide exploration vectors that might be used in
conjunction with other geologic, geochemical, and geophysical techniques to determine the locus of fossil hydrothermal fluid flow,
and the attendant possibility of finding economic mineral deposits.
At Pipeline, measurements of apatite fission-tracks and (U-Th)/He geochronometry yield a clear indication of the elevated
temperatures associated with the fossil hydrothermal system. The pattern is one of a central target (Pipeline deposit) with
decreasing thermal effects as far as several kilometers laterally from the known ore zone. Because of the irregular nature of fluid
flow through fractures, a significant number of samples are required to discern this pattern, but the pattern is quite clear from the

  

Source: Arehart, Greg B. - Department of Geological Sciences, Mackay School of Mines, University of Nevada, Reno

 

Collections: Geosciences