@techreport{oai:soar-ir.repo.nii.ac.jp:00016887,
 author = {矢彦沢,  清允 and 山本,  満寿夫 and 上野,  満夫 and 藤松,  仁},
 month = {Mar},
 note = {: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)},
 title = {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},
 year = {1993}
}