三ッ谷層

三ッ谷層 (島倉と土田, 1939) 石井ほか, 1982

みつや

Mitsuya Formation (Shimakura and Tsuchida, 1939) Ishii et al., 1982

別名 (無効): 三ッ谷黄色砂岩層

------ 整合, ~~~~~~ 不整合, ~~~--- 部分不整合, '''/,, 指交, :::::: 断層, /--/-- 衝上断層, +__+__ 地表, ?--?-- 不明

分布: 宮城県宮城郡松島町北小泉 (きたこいずみ) - 根廻 (ねまわり), 宮城県東松島市矢本三ッ谷 (みつたに)
化石 (貝): Acila (Acila) divaricata, Cryptonatica janthostomoides, Dentalium sp., Macoma incongrua, Macoma tokyoensis, Portlandsia (Portlandella) japonica
化石 (珪藻): Actinocyclus ingens, Actinocyclus ingens var. nodes, Actinoptychus undulatus, Biddulphia aurita, Biddulphia calamus, Cocconeis costata, Cocconeis scutellum, Coscinodiscus endoi, Coscinodiscus marginatus, Coscinodiscus symbolophorus, Coscinodiscus cfr. yabei, Denticulopsis hustedtii, Denticulopsis hyalina, Denticulopsis lauta, Denticulopsis nicobarica, Goniothecium rogersii, Grammatophora sp., Hemiaulus bipons, Himiaulus aff. polymorphus, Medialia splendida, Melosira sulcata, Navicula spp., Nitzschia challengeri, Pseudodimerogramma elegans, Pseudopodosira aff. hyalina, Rhizosolenia alata, Rhizosolenia miocenica, Rhizosolenia styliformis, Rossiella praepaleacea, Rouxia californica, Stephanogonita hanzawae, Stephanopyxis spp., Stictodiscus kittonianus, Synedra jouseana, Synedra miocenica, Thalassionema hirosakiensis, Thalassionema nitzschioides, Thalassiosira leptopus, Thalassiothrix longissima, Triceratium condecorum, Trochosira spinosa