Report Number: 20572
Permit Number: CRLA-2001-SCI-0001
Principal Investigator:
Jeremy Boyce,
Cambridge, MA
Date Received: Jan 17, 2002
Reporting Year:
2001
Additional investigator(s):
Jorge
Vazquez, Kip Hodges, Michael Clynne
Park-assigned Study Id. #
CRLA-01023
Permit Expiration Date:
Jul 05, 2001
Permit Start Date:
Jun 05, 2001
Study Starting Date:
Jul 15, 2000
Study Ending Date:
Jan 01, 2003
Study Status:
Continuing
Activity Type:
Research
Subject/Discipline:
Geochemistry (inc. Minerals /
Petrology)
Objectives:
An evaluation of the (U-Th)/He
(uranium-thorium-helium) method of dating rocks (or "geochronometer"), by
attempting to apply it to an eruption with a well-constrained age. One known
problem with (U-Th)/He is that for young rocks, the age calculated may be
incorrect unless significant time has elapsed between crystallization and
eruption. If this time is short, the subsequent helium accumulation will be
increased/decreased and therefore the age obtained will be wrong. The
crystallization age of these crystals is known to be >10,000 yrs before
eruption, making them ideal for this study.
Findings and Status:
Sample preparation has
commenced, but no ages have yet been calculated. We anticipate that the
analytical stage of this project will begin in the spring of 2002.
For this study, were one or
more specimens collected and removed from the park but not destroyed during
analyses?
No
Funding provided this
reporting year by NPS:
0
Funding provided this
reporting year by other sources:
1600
Full name of college or
university:
n/a
Annual funding provided by
NPS to university or college this reporting year: 0
