Unique properties of lunar impact glass: Nanophase metallic Fe synthesis

2007 ◽  
Vol 92 (8-9) ◽  
pp. 1420-1427 ◽  
Author(s):  
Y. Liu ◽  
L. A. Taylor ◽  
J. R. Thompson ◽  
D. W. Schnare ◽  
J.-S. Park
Keyword(s):  
Lunar Impact ◽  
Impact Glass

Argon diffusion in Apollo 16 impact glass spherules: Implications for 40Ar/39Ar dating of lunar impact events

2015 ◽  
Vol 148 ◽  
pp. 251-268 ◽  
Author(s):  
David J. Gombosi ◽  
Suzanne L. Baldwin ◽  
E. Bruce Watson ◽  
Timothy D. Swindle ◽  
John W. Delano ◽  
...  
Keyword(s):  
Lunar Impact ◽  
Impact Glass ◽  
Impact Events

scholarly journals Using Size and Composition to Assess the Quality of Lunar Impact Glass Ages

Geosciences ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 85 ◽  
Author(s):  
Pham Nguyen ◽  
Nicolle Zellner
Keyword(s):  
Planetary Science ◽  
Lunar Samples ◽  
Crater Counting ◽  
Lunar Impact ◽  
Impact Glass ◽  
Counting Statistics ◽  
The Impact ◽  
Proper Interpretation ◽  
Orbital Data

Determining the impact chronology of the Moon is an important yet challenging problem in planetary science even after decades of lunar samples and other analyses. In addition to crater counting statistics, orbital data, and dynamical models, well-constrained lunar sample ages are critical for proper interpretation of the Moon’s impact chronology. To understand which properties of lunar impact glasses yield well-constrained ages, we evaluated the compositions and sizes of 119 Apollo 14, 15, 16, and 17 impact glass samples whose compositions and 40Ar/39Ar ages have already been published, and we present new data on 43 others. These additional data support previous findings that the composition and size of the glass are good indicators of the quality of the age plateau derived for each sample. We have further constrained those findings: Glasses of ≥200 μm with a fraction of non-bridging oxygens (X(NBO)) of ≥0.23 and a K2O (wt%) of ≥0.07 are prime candidates for argon analyses and more likely to yield well-constrained 40Ar/39Ar ages. As a result, science resulting from impact glass analyses is maximized while analytical costs per glass are minimized. This has direct implications for future analyses of glass samples for both those in the current lunar collection and those that have yet to be collected.

NO CHANGE IN THE LUNAR IMPACT FLUX THROUGH THE COPERNICAN PERIOD FROM MODELING IMPACT GLASS SPHERULE AGE DISTRIBUTION IN LUNAR REGOLITH

2017 ◽  
Author(s):  
Ya-Huei Huang ◽  
◽  
David A. Minton ◽  
Nicolle E.B. Zellner ◽  
Masatoshi Hirabayashi ◽  
...  
Keyword(s):  
Lunar Regolith ◽  
Age Distribution ◽  
Impact Flux ◽  
Lunar Impact ◽  
Impact Glass

scholarly journals No Change in the Recent Lunar Impact Flux Required Based on Modeling of Impact Glass Spherule Age Distributions

2018 ◽  
Vol 45 (14) ◽  
pp. 6805-6813 ◽  
Author(s):  
Ya‐Huei Huang ◽  
David A. Minton ◽  
Nicolle E. B. Zellner ◽  
Masatoshi Hirabayashi ◽  
James E. Richardson ◽  
...  
Keyword(s):  
Impact Flux ◽  
Lunar Impact ◽  
Impact Glass

scholarly journals Spectral properties of lunar impact melt deposits from Moon Mineralogy Mapper (M3) data

Icarus ◽  
2021 ◽  
Vol 361 ◽  
pp. 114392
Author(s):  
C.D. Neish ◽  
K.M. Cannon ◽  
L.L. Tornabene ◽  
R.L. Flemming ◽  
M. Zanetti ◽  
...  
Keyword(s):  
Spectral Properties ◽  
Impact Melt ◽  
Moon Mineralogy Mapper ◽  
Lunar Impact

Preparing for a lunar impact

2011 ◽  
Vol 45 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Ernie Wright
Keyword(s):  
Lunar Impact

scholarly journals Chronology and sources of lunar impact bombardment

Icarus ◽  
2012 ◽  
Vol 218 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Matija Ćuk
Keyword(s):  
Lunar Impact
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