number of downloads : ?
Title Transcription
オキ ドウゴ シマネケン ノイイノヤマ ケイソウド ノ ゲンソ ソセイ ヨホウ
Title Alternative
Geochemical composition of the Iinoyama diatomite of the Oki-Dogo Islands, Shimane Prefecture, Southwest Japan
File
language
jpn
Author
Yamazaki, Chikako
Tsubokura, Naoko
Douzen, Kaori
Description
Diatomite is an important resources for the brick stones in the Oki-Dogo Islands,Southwest Japan.This report involves XRF analyses(major and trace elements)of the Miocene linoyama diatomite,and indicates briefly the major elements characteristics.
SiO_2 contents show a negative good correlation with most of the major elements(r^2 values range from 0.69 to 0.98)excluding MgO and P_2O_5.This suggests that dilution effects of biogenic silica are significant for the composition of the diatomites.On the SiO_2 vs Al_2O_3 diagram,other Miocene siliceous rocks of the examined area plot on the trend of the Iinoyama diatomite.Noteworthy is that Jodogaura samples of the nonmarine Tokibariyama Foemation have SiO_2 over 90 wt %,suggestive of chert formation due to the higher silica concentration of biogenic activity under lacustrine environments and/or diagenetic alteration.
Journal Title
島根大学地球資源環境学研究報告
Volume
17
Start Page
97
End Page
100
ISSN
13439774
Published Date
1998-12-25
NCID
AA11455176
Publisher
島根大学総合理工学部地球資源環境学教室
Publisher Aalternative
Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering
Remark
12-14,16+ / 1993+
このエントリーをはてなブックマークに追加