کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1881904 | 1533448 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
TL sensitivity of single chondrules from type 3 chondrites: Thermal metamorphism of chondrules in a nebular environment?
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
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چکیده انگلیسی
Chondrules are millimeter sized near spherical objects that comprise >50% of the volume of chondritic meteorites. Determinations of the initial Al/2726Al ratios from earlier studies of ferromagnesian chondrules in unequilibriated ordinary chondrites indicate that most chondrules formed between â¼1.5 and 2.5Â Ma after the formation of calcium-aluminium rich inclusions (CAIs) in the early solar system. This paper investigates the thermoluminescence sensitivity of chondrules from unequilibriated ordinary chondrites to search for indications of thermal metamorphism in a pre-parent body. Our results suggest that a few chondrules in Semarkona and Bishunpur chondrites with higher levels of TL sensitivity may have experienced such thermal metamorphism in a pre-parent body environment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Measurements - Volume 43, Issues 2â6, FebruaryâJune 2008, Pages 406-409
Journal: Radiation Measurements - Volume 43, Issues 2â6, FebruaryâJune 2008, Pages 406-409
نویسندگان
D. Banerjee, V. Mahalingam, D.K. Panda,