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ID 56691
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Title Alternative
Non-calcareous beachrock found in Akagurisaki, Ohi Town, Fukui Prefecture
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Author
Suzuki, Shigeyuki Graduate School of Natural Science and Technology, Okayama University
Azuma, Yoichi 平寺町松岡兼定島 4-1-1 **
Deyama, Yasuyo 平寺町松岡兼定島 4-1-1 **
Yukawa, Hirokazu Fukui Prefectural Dinosaur Museum
Usui, Mayumi Fujigakuin-Okayama
Abstract
Beachrock which was formed about 0.5 meter higher than high tide is found in Akagurisaki, Ohi Town, Fukui Prefecture. The outcrops always get wet by spring water. The sediments are composed of well sorted rounded gravels and sands but calcareous shell is not found at all. Intergranular space is occupied by white amorphous cement. Magnesium and silicon rich composition of the cement is obtained by EPMA analysis. There is a conjecture that the magnesium rich cement was precipitated in spite of solution of calcareous shell under saturated state by spring water, because calcium has a higher tendency to ionize than magnesium.
Keywords
Beachrock
Akagurisaki
non-calcareous cement
ionization tendency
Publication Title
Okayama University Earth Science Report
Published Date
2018-12-27
Volume
volume25
Issue
issue1
Publisher
岡山大学理学部地球科学教室
Publisher Alternative
Department of Earth Sciences, Faculty of Science, Okayama University
Start Page
1
End Page
5
ISSN
1340-7414
NCID
AN10506284
Content Type
Departmental Bulletin Paper
OAI-PMH Set
岡山大学
language
日本語
Copyright Holders
© 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
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publisher
Eprints Journal Name
esr