In this section
@article{Amidon:2009:10.1016/j.epsl.2009.01.031,
author = {Amidon, WH and Rood, DH and Farley, KA},
doi = {10.1016/j.epsl.2009.01.031},
journal = {Earth and Planetary Science Letters},
pages = {194--204},
title = {Cosmogenic 3He and 21Ne production rates calibrated against 10Be in minerals from the Coso volcanic field},
url = {http://dx.doi.org/10.1016/j.epsl.2009.01.031},
volume = {280},
year = {2009}
}
TY - JOUR
AB - This study calibrates the production rate of cosmogenic <sup>3</sup>He in pyroxene, olivine, garnet, zircon and apatite as well as <sup>21</sup>Ne in quartz and pyroxene against the known production rate of <sup>10</sup>Be in quartz. The Devil's Kitchen rhyolite from the Coso volcanic field in southeastern California (elev. ~ 1300 m) was chosen for this study due to its young age (~ 610 ka) and diverse mineral assemblage. Based on <sup>10</sup>Be, our two rhyolite samples have apparent exposure ages of ~ 49 and 93 ka, indicating substantial erosion after eruption. Combining data from the two samples, we estimate sea level high latitude <sup>3</sup>He spallation production rates of 145 ± 11, 141 ± 16, and 144 ± 30 at g<sup>- 1</sup> a<sup>- 1</sup> (2σ) for pyroxene, olivine and spessartine garnet respectively. For zircon and apatite, we estimate apparent <sup>3</sup>He spallation production rates of 114 ± 8 and 149 ± 28 at g<sup>- 1</sup> a<sup>- 1</sup> (2σ) respectively. The rates for zircon and apatite are reported as apparent production rates because we do not explicitly address the redistribution of spallation produced <sup>3</sup>He from adjacent minerals. These estimates quantitatively account for production of <sup>3</sup>He from both cosmogenic and radiogenic neutron reactions on <sup>6</sup>Li within the analyzed phases and also implanted from nuclear reactions in neighboring minerals; the high U, Th and Li content of this rhyolite provides a particularly rigorous test of this correction. We estimate <sup>21</sup>Ne production rates of 17.7 ± 1.6 and 34.1 ± 3.2 at g<sup>- 1</sup> a<sup>- 1</sup> (2σ) in quartz and pyroxene (Fe/Mg = 0.7 by mass) respectively. Although high
AU - Amidon,WH
AU - Rood,DH
AU - Farley,KA
DO - 10.1016/j.epsl.2009.01.031
EP - 204
PY - 2009///
SN - 0012-821X
SP - 194
TI - Cosmogenic 3He and 21Ne production rates calibrated against 10Be in minerals from the Coso volcanic field
T2 - Earth and Planetary Science Letters
UR - http://dx.doi.org/10.1016/j.epsl.2009.01.031
VL - 280
ER -