Computer Science
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977moon...17..149k&link_type=abstract
The Moon, vol. 17, Oct. 1977, p. 149-165.
Computer Science
1
Geochronology, Lunar Temperature, Lunik 20 Lunar Probe, Pyroxenes, Cations, Diffraction Patterns, Electron Microscopy, Lunar Geology, Microstructure, Photomicrographs, Solid Phases, X Ray Analysis
Scientific paper
Data on the structural and phase states of Lunar-20 pyroxenes are presented which were obtained by a combination of techniques involving X-ray structural analysis, electron microscopy, and X-ray microprobe analysis. The kinetics of Fe(2+)-Mg ordering in orthopyroxenes is discussed along with the kinetics of exsolution in clinopyroxenes and cooling rates for both types of pyroxene. A method for the approximate estimation of the subsolidus cooling rate is proposed which is based on analysis of the kinetics of solid-phase reactions in pyroxenes. Experimental results for three clinopyroxene and two orthopyroxene crystals from the Luna-20 regolith are presented, the thermal history of these pyroxenes is considered, and the pyroxenes are classified according to their thermal history as slowly cooled, rapidly cooled, and those with a complicated thermal history. It is concluded that most of the pyroxenes in the Luna-20 samples are characterized by slow subsolidus cooling and represent material excavated from deeper parts of the lunar crust by the Amegino crater event.
Khisina Natal'ia R.
Makarov E. S.
No associations
LandOfFree
Cation distribution and exsolution in the Luna-20 pyroxenes as the chronological indicator of their thermal history does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cation distribution and exsolution in the Luna-20 pyroxenes as the chronological indicator of their thermal history, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cation distribution and exsolution in the Luna-20 pyroxenes as the chronological indicator of their thermal history will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-746973