Mineralogical evidence of heating events in Antarctic carbonaceous chondrites, Y-86720 and Y-82162
スポンサーリンク
概要
- 論文の詳細を見る
Antarctic carbonaceous chondrites, Y-82162 and Y-86720 were examined by transmission electron microscopy. Matrix phyllosilicates in both meteorites are probably serpentine and saponite. There is evidence that these phyllosilicates were affected by thermal metamorphism. The serpentine was almost completely transformed to olivine or an intermediate phase between serpentine and olivine. The degrees of thermal metamorphism in Y-86720,Y-82162 and Y-793321 were compared, and heating experiments of terrestrial saponite and Murchison CM chondrite were also carried out for detailed comparison. Based on these observations and experiments, estimated degrees are as follows : Y-86720>Y-82162>Y-793321.
- 国立極地研究所の論文
著者
-
Akai Junji
Department Of Earth Sciences Faculty Of Science Niigata University
-
Akai Junji
Department of Geology and Mineralogy, Faculty of Science,Niigata University
関連論文
- Crystal orientation analyses of biominerals using Kikuchi patterns in TEM
- Twinned aragonite crystals found in the bivalvian crossed lamellar shell structure
- Calcic analog of clinojimthompsonite ftom the Oeyama Ophiolite,Southwest Japan
- Four-layer orthorhombic polytype (4O) in strontio-joaquinite group minerals found in the Ohmi region, central Japan
- Strontium, barium and titanium-bearing minertals and their host rocks form Ohmi, Japan
- Brockite form Ishikawa, Fukusima Prefectur, Japan
- Shock effects experiments on serpentine and thermal metamorphic conditions in Antarctic carbonaceous chondrite
- HRTEM OBSERVATION OF NEW COMPLEX POLYTYPE OF BIOTITE FROM DACITES IN HIGASHIYAMA HILLS, NIIGATA, CENTRAL JAPAN
- Void structures in olivine grains in thermally metamorphosed Antarctic carbonaceous chondrite B-7904
- TEM observation of void-like defect structures in matrix-and isolated-olivine grains in Allende (CV3)
- Sources of organic carbon and depositional environment in the Bengal delta plain sediments during the Holocene period
- Mineralogical consideration of possible microfossils in martian meteorite ALH84001
- Ultrastructural observations of dental epithelial cells and enameloid during enameloid mineralization and maturation stages in stingrays, Urolophus aurantiacus, an elasmobranch
- T-T-T diagram of serpentine and saponite, and estimation ofmetamorphic heating degree of Antarctic carbonaceous chondrites
- Mineralogical evidence of heating events in Antarctic carbonaceous chondrites, Y-86720 and Y-82162
- Carbon materials in Antarctic and nonAntarctic carbonaceous chondrites : high-resolution transmission electron microscopy
- High resolution electron microscopic characterization of phyllosilicates and finding of a new type with 11Å structure in Yamato-74662
- Calcium distribution in alkali feldspar of a quartz syenite from Cape Ashizuri, Shikoku, southwest Japan
- Mineralogical study of matrix- and groundmass-phyllosilicates, and isolated olivines in Yamato-791198 and -793321: With special reference to new finding of 14 Å chlorite in groundmass