[ Top ] [ Japanese ]
Matsukizawa Sand and Gravel Member
Invalid synonym (Shell-bearing sands and gravels at the bottom): Kamayachi Formation, Kamayachi facies
- Sedimentary facies: Marine
- Sedimentary facies: Upper - lower shoreface
- Climate: Warm
- Lithofacies: Sands and gravels
- Lithofacies (Lower): Sands, Gravels
- Sedimentary structures: Wave-formed ripples, Cross stratification
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Unoki, Oga city, Akita pref.
- Fossils (Sarukawa fauna, Kamayachi facies, ca. 60 species shellfishes): Glycymeris yessoensis, Tridonta borealis, Pseudocardium sachalinensis, Schapharca subcrenata, Pholadidea kamakurensis
- Fossils (Sarukawa fauna, Kamayachi facies, ca. 60 species shellfishes): Acila insignis, Acmaea pallida, Acteocina gordonis, Alvania asura, Alvania concinna, Alvania sadoensis, Anadara subcrenata, Anisocorbula venusta, Arca boucardi, Assiminea japonica, Astarte borealis, Brachyloma japonica, Cardita leana, Chama reflex, Chlamys nipponensis, Chlamys swiftii, Cingula mundana, Clathrofenella reticulata, Clavus jeffereysi, Coleophysis minima, Dosinia japonica, Fusitriton oregonensis, Glycymeris albolineata, Glycymeris yessoensis, Hiponix conicus, Hydroides reticulatus, Leptothyra amusitata, Mercenaria stimpsoni, Mitrella boucardi, Mitrella tenuis, Moerella nishimurai, Monia machrochisma, Neptunea cumingii, Neverita didyma, Pholadidea kamakurensis, Placamen tiara, Propehela yokoyamai, Protothaca adamsi, Pseudocardium sachalinensis, Pseudogrammatodon dalli, Puncturella nobilis, Ringicula niinoi, Schapharca subcrenata, Searlesia modesta, Striarca interplicata, Tectonatica janthostomoides, Tridonta borealis, Tritia aculidenlata, Tugari gigas, Tugari vadososinuala, Turbonilla misella, Velutina takatensis, Zirfaea subconstricta
- Fossils (Foraminifera): Bolvina robusta, Cassidulina japoinca, Cibicides cf. reflugenes, Discopulvinulina bradyi, Elphidium advenum, Elphidium cf. fabum, Elphidium fax barbarensis, Elphidium hughesi foraminosum, Eponides karsteni, Eponides nipponicus, Gutlulina cf. regina, Nonionella pulchella, Poroeponides cribrocancameralus, Quinqueloculina akneriana, Quinqueloculina elongata, Quinqueloculina lamarckiana, Quinqueloculina seminula, Rotalia ketienziensis, Rotalia ozawai, Rotalia papillosa, Spiroculina corrugata, Uvigerina akitaensis
- Tephra: Toya
- Shiraishi et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.33-50 DOI
- Fujimoto et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.51-74 DOI
- Ozawa et al. (1985) Geology of the Ugo-Hamada District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 57p. (in Japanese with English abstract 4p.)