{"ok":true,"version":"1.1.0","license":"https://www.gsj.jp/license/license.html","attribution":"出典：産業技術総合研究所 地質調査総合センター「GSJ 地質図幅凡例データセット」","lang":"ja","type":"LegendUnit","id":"m506_u004","@id":"https://gbank.gsj.jp/ld/resource/zfk/units/m506_u004","geom":{"uri":"https://gbank.gsj.jp/ld/resource/zfk/units/m506_u004/geom","geojson_url":"https://cdn.gsj.jp/ld/zfk/units_geojson/m506_u004.geojson","centroid":{"lat":36.444247,"lon":137.406779,"epsg":4326},"bbox":[137.315067,36.430694,137.443487,36.479272],"color":"#7d4534"},"map":{"type":"LegendMap","map_id":506,"@id":"https://gbank.gsj.jp/ld/resource/zfk/maps/m506","sheet_code":"G50_10_036","series":"5万分の1地質図幅","title_ja":"東茂住","title_en":null,"author":["河合正虎","野沢保"],"authors":[{"name_display":"河合正虎","name_ja":"河合正虎","name_en":"Masatora KAWAI","name_alt":["Masatora KAWAI"]},{"name_display":"野沢保","name_ja":"野沢保","name_en":"Tamotsu NOZAWA","name_alt":["Tamotsu 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id=\"m506_u004_D\"></span><p>粗粒玄武岩は手取層群を貫ぬいて有峰の東谷奥に2カ所と，大多和東方山地に1カ所，岩頸をなして露出するに過ぎない。</p><p>岩石は暗灰色粗粒で，斑晶は著しく変質した塊状半自形の普通輝石と，おそらくこれが，2次的に変化したと思われる方解石および緑泥石の集合体からなり，石基は斜長石（中性長石）の拍子木状結晶の集合からなり，その間を鉄鉱粒および緑泥石などが充塡している。</p><p>本岩の貫入の時期は詳らかではないが，ここでは仮に第三紀とした。</p></div></div>","text":"粗粒玄武岩\n粗粒玄武岩は手取層群を貫ぬいて有峰の東谷奥に2カ所と，大多和東方山地に1カ所，岩頸をなして露出するに過ぎない。\n岩石は暗灰色粗粒で，斑晶は著しく変質した塊状半自形の普通輝石と，おそらくこれが，2次的に変化したと思われる方解石および緑泥石の集合体からなり，石基は斜長石（中性長石）の拍子木状結晶の集合からなり，その間を鉄鉱粒および緑泥石などが充塡している。\n本岩の貫入の時期は詳らかではないが，ここでは仮に第三紀とした。","blocks":[{"type":"heading","depth":1,"text":"粗粒玄武岩","id":""},{"type":"paragraph","text":"粗粒玄武岩は手取層群を貫ぬいて有峰の東谷奥に2カ所と，大多和東方山地に1カ所，岩頸をなして露出するに過ぎない。"},{"type":"paragraph","text":"岩石は暗灰色粗粒で，斑晶は著しく変質した塊状半自形の普通輝石と，おそらくこれが，2次的に変化したと思われる方解石および緑泥石の集合体からなり，石基は斜長石（中性長石）の拍子木状結晶の集合からなり，その間を鉄鉱粒および緑泥石などが充塡している。"},{"type":"paragraph","text":"本岩の貫入の時期は詳らかではないが，ここでは仮に第三紀とした。"}],"images":[],"tables":[],"anchors":[{"id":"m506_u004_D","label":"D","title":"粗粒玄武岩"}]},"provenance":{"xml_url":"https://gbank.gsj.jp/ld/zfk/xmldata/0506_BITS.xml","xpath_target":"//*[@id='']","generated_at":"2026-03-31T02:01:03+09:00","html_url":"https://cdn.gsj.jp/ld/zfk/zfkdoc/0506/0506.html"},"legend":{"focus":{"type":"LegendUnit","id":"m506_u004","@id":"https://gbank.gsj.jp/ld/resource/zfk/units/m506_u004","map_id":506,"legend_group_ref":{"type":"LegendGroup","id":"m506_g001","@id":"https://gbank.gsj.jp/ld/resource/zfk/groups/m506_g001","label":"図幅凡例"},"parent_age_ref":{"type":"LegendAge","id":"m506_a003","@id":"https://gbank.gsj.jp/ld/resource/zfk/ages/m506_a003","label":"第三紀"},"parent_facies_ref":{"type":"LegendFacies","id":"m506_f005","@id":"https://gbank.gsj.jp/ld/resource/zfk/facies/m506_f005","label":""},"label_ja":"粗粒玄武岩","label_en":"Dolerite","major_code":4,"symbol":"D","color":"#7d4534","geom":{"uri":"https://gbank.gsj.jp/ld/resource/zfk/units/m506_u004/geom","geojson_url":"https://cdn.gsj.jp/ld/zfk/units_geojson/m506_u004.geojson","centroid":{"lat":36.444247,"lon":137.406779,"epsg":4326},"bbox":[137.315067,36.430694,137.443487,36.479272]}},"parent_age":{"type":"LegendAge","id":"m506_a003","@id":"https://gbank.gsj.jp/ld/resource/zfk/ages/m506_a003","map_id":506,"legend_group_ref":{"type":"LegendGroup","id":"m506_g001","@id":"https://gbank.gsj.jp/ld/resource/zfk/groups/m506_g001","label":"図幅凡例"},"label_ja":"第三紀","label_en":"Tertiary","text_ja":"新生代 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