2024-03-29T10:32:31Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00016887
2023-01-18T01:56:44Z
1628:1629:1652
フオツサマグナ東端地域に分布する第三系海成堆積物中に見出される石灰質泥岩とその意義
On the Calcareous Mudstones from Tertiary Marine Sediments in the east,-side region of the Fossa Magna, Central Japan, and its Significance
矢彦沢, 清允
山本, 満寿夫
上野, 満夫
藤松, 仁
:A uthors found the grayish white mudstone from the fresh outcrops at the site of land development in the east-side region of the .Fossa Magna,c entral Japan. Grayish white mudstones have been observed from view points of the occurence mode and morphologicai features. Its significance has been dicussed The grayish white mudstones have been identified as calcium carabonate by chemical analysis and X-ray microanalyzer. The calcarious mudstones have been found only in the Aoki formation for the surveyable part in the region. Calcium carbonate content was the range of 4 to 83 %. The formation of calcarious mudstone was about 0.1 to 60 cm thick. The morphological features of calcarious formation were mostly alayer type,a nd occasiortally ac oncave type,a r adical type,a w edge type,a l amina type,a nd al ode type. The grayish white mudstones have been found only on the deep horizon. It was then suggested that calcarious mudstones mitigate a acidification of soil by sulfuric acid which was derived from the oxidation of pyrite by the joint action of air and rain water
Article
環境科学年報15:99-104(1993)
research report
信州大学環境科学研究会
1993-03-31
application/pdf
環境科学年報
15
99
104
0915-7492
AN1054947X
https://soar-ir.repo.nii.ac.jp/record/16887/files/15-16.pdf
jpn