@article{oai:nipr.repo.nii.ac.jp:00004552,
 author = {Ninagawa,Kiyotaka and Kubo,Hideyuki and Fujimura,Shin-ichi and Yamamoto, Isao and Wada,Tomonori and Matsunami,Satoshi and Nishimura,Hiroshi},
 journal = {Proceedings of the NIPR Symposium on Antarctic Meteorites},
 month = {Mar},
 note = {P(論文), Induced thermoluminescence (TL) images of ordinary chondrites, ALH-77214 (L3.4-3.5), Y-74191 (L3.6), ALH-77216 (L3.8) and ALH-78043 (L6), were measured by the TL spatial distribution readout system combined with a microscope and TL characteristics [peak temperature and peak width] of mesostases were analyzed. Their chemical compositions were also analyzed by an electron probe X-ray microanalyzer. We found that; (1) The mesostasis was responsible for much of the TL in the ordinary chondrites, (2) A mesostasis of normative anorthite compositions showed low peak temperature (&acd;90℃) and narrow width (&acd;65℃), while a mesostasis of normative albite compositions showed high peak temperature (&acd;125℃) and wide width (&acd;100℃), (3) A main phosphor in a low petrologic grade chondrite <3.5 was a high anorthite mesostasis and that in high grade chondrites >3.5 was a high albite mesostasis, (4) Some chondrules in the same fragments of the type 3 chondrites showed no or weak TL emission and these mesostases had high normative albite. These facts suggest that in type 3 ordinary chondrites; (1) The post-accretional metamorphism cannot account for the coexistence of high albite mesostases with TL emission and no emission and a high anorthite mesostasis with TL emission, (2) Low petrologic grade chondrites <3.5 have a large population of rapidly cooled chondrules and high petrologic grade chondrites >3.5 have a large population of slowly cooled chondrules.},
 pages = {344--351},
 title = {Thermoluminescence characteristics and chemical compositions of mesostases in ordinary chondrites},
 volume = {4},
 year = {1991}
}