NAI
Terrestrial Alteration of Cm Chondritic Carbonate
Presenter:
Mark Tyra
When: April 12, 2004 12AM PDT
When: April 12, 2004 12AM PDT
In this study, carbonate was extracted
from a set of paired Antarctic CM chondrites
and δ18O, δ17O, δ13C, δ14C ratios measured. Oxygen
isotopes were compared to Benedix et al., 2003’s data
collected for CM chondrite falls to study the effects of
terrestrial oxygen exchange [1]. Carbon isotopes of the
same sample set were examined at the University of
Arizona’s accelerated mass spectrometry (AMS) lab
for insights how terrestrial carbon exchange corresponds
to oxygen’s trends. The meteorites we analyzed
are: EET 96006, EET 96016, EET 96017, and
EET 96019.
A Record of the Earliest (4.5-3.8 Ga) Surface Conditions on Earth?
Simulating Groundwater Radiolysis With Oxidation of Pyrite by Hydrogen Peroxide Solution
Exploring Planet-Forming and Debris Disks
Quantifying Water Production in Comets - The "Meter Stick" for Their Chemical Taxonomy