@article{oai:nodai.repo.nii.ac.jp:00000955,
 author = {張, 平星 and 渋澤, 孝行 and Zhang, Pingxing and Shibusawa, Takayuki},
 issue = {3},
 month = {Dec},
 note = {本研究は，関東地方有数の石材産地である秩父地方において，荒川上流の河原の礫種がどのように秩父地方の地質を反映しているかを把握することで，造園石材や建築石材の教材を提案することを目的とした。公共交通機関からアクセスでき，河原に降りて調査を実行可能な場所，かつ荒川の流路が湾曲し，礫が多く堆積している場所から6地点を選定した。それぞれ5mのひもを3回のばし，ひもに触れた長径5～20cmの礫を対象とした。「地質図Navi」から秩父地方の岩石の分布域を抽出し，石材に多用される岩石の種類をもとに3回調査した結果，6地点はいずれも砂岩類（緑色岩類を含む）・泥岩類が上位を占めており，花崗岩類・チャート・石灰岩・蛇紋岩・緑泥石片岩およびその他の結晶片岩類が認められた。6地点の礫種の変化は，支流上流の地質にも大きく影響されていると考えられる。また，人工護岸の有無や，礫の大きさや形状を左右する岩石自体の性質も，礫種の変化に影響を与えていると推察される。以上の6地点は石材教育の教材として，造園石材や建築石材に対する理解の向上，地域の石材と地質の関係性に対する理解の向上，調査スケジュールの高い自由度が期待できる。, The Chichibu region is one of the important stone-producing areas in the Kanto region.  We aimed to propose teaching materials for the education of gardening stone and building stone, by understanding how the gravel species on the riverbed of the Arakawa River reflect the geology of the Chichibu region.  We selected 6 sites on curved riverbed where public transportation is available, and where the Arakawa River is curved.  On each site, a string of 5 m was pulled in 3 places and the gravel with a major axis of 5 to 20 cm that touched the string were recorded.  After extracting the geological information from GeoNavi (GSJ/AIST), the investigation was conducted 3 times.  As a result, sandstone (including greenstone) and mudstone occupied the top-level in 6 sites.  Granite, chert, limestone, serpentinite, greenschist, and other crystalline schist were confirmed.  It is considered that the changes in gravel species at the 6 sites are also affected by the upstream geology of the tributaries.  In addition, the artificial revetments and the hardness of the rock also possibly affect the change of gravel species.  The 6 sites can be scheduled conveniently, as teaching materials for the education of gardening stones and building stones, as well as the understanding of the relationship between the material regionality and geology., E, 6, P, ノート, Note},
 pages = {122--130},
 title = {荒川上流の礫種と秩父地方の地質の関係性─石材教育の教材の提案─},
 volume = {67},
 year = {2022},
 yomi = {チョウ, ヘイセイ and シブサワ, タカユキ}
}