Discovery of vertebrate bone in permian fossil (silicified peat) by element distribution measurement using X-ray analysis microscope
Creators
- 1. Horiba Techno Service Co., Ltd., Analytical Technology Center, Kyoto (Japan)
- 2. Chuo University, Faculty of Science and Engineering, Tokyo (Japan)
Description
Mapping analysis of vertebrate fossils in Permian silicified peat was carried out using microscopic energy dispersive fluorescent X-ray analysis (EDX) instrument. The table type fluorescent X-ray analyzer has advantages that low tube voltage and current of the X-ray tube greatly minimize surface discoloration of samples including organic ones caused by X-ray irradiation, and can be easily handled in a laboratory. During a horizontal distribution mapping of a Permian silicified peat sample, particular area showing high phosphorus and calcium coexistence, which could represent a possible bone structure, was detected. The presence of a vertebrate bone fragment was confirmed by light microscopy observation of the fossil sections. This is the first report of the finding of a vertebrate bone in fossil silicified peat using the EDX instrument. (author)
Abstract (Japanese)
顕微鏡型のエネルギー分散型蛍光X線分析(EDX)装置を用いて,ペルム紀珪化泥炭中の脊椎動物化石のマッピング分析を行った.卓上型蛍光X線分析装置は,X線管の管電圧,管電流が低く,有機物の試料でもX線による表面焼けなどの変色が起こりにくく,簡易に実験室で扱えるという利点がある.珪化泥炭中にP,Caが共存している箇所が水平分布図で確認され,珪化泥炭に脊椎動物の骨の一部が存在する可能性があった.光学顕微鏡による化石切片の観察により,実際に骨の存在を確認することができた.本報告は,EDXを用いた珪化化石中の脊椎動物骨格の初の発見例である.(著者)Additional details
Additional titles
- Original title (Japanese)
- X線分析顕微鏡によるペルム紀珪化泥炭化石中の脊椎動物骨の発見
Publishing Information
- Journal Title
- X-sen Bunseki No Shinpo
- Journal Volume
- 48
- Series
- 雑誌名:X線分析の進歩
- Journal Page Range
- p. 375-385
- ISSN
- 0911-7806
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 54097324
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- FOSSILS; IRRADIATION; MULTI-ELEMENT ANALYSIS; OPTICAL MICROSCOPES; PERMIAN PERIOD; PHOSPHORUS; VERTEBRATES; X-RAY FLUORESCENCE ANALYSIS; X-RAY SPECTRA; X-RAY TUBES
- Descriptors DEC
- ANIMALS; CHEMICAL ANALYSIS; ELECTRON TUBES; ELEMENTS; EQUIPMENT; GEOLOGIC AGES; MICROSCOPES; NONDESTRUCTIVE ANALYSIS; NONMETALS; PALEOZOIC ERA; SPECTRA; X-RAY EMISSION ANALYSIS; X-RAY EQUIPMENT
Optional Information
- Notes
- 14 refs., 11 figs., 1 tab.