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Loc. Y5098 - River Hakkinzawa [Yezo Gp], Yubari District, Sorachi Subprefecture, Hokkaidō Prefecture, Japan
| Lat/Long (Decimal) | 43,142 |
|---|---|
| Co-ordinates Derivation | based on nearby landmark |
| Mindat.org Region (for given coordinates) | Yubari District, Sorachi Subprefecture, Hokkaidō Prefecture, Japan |
Collections
| Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
|---|---|---|---|---|---|
| Loc. Y5203 - River Hakkinzawa, Oyubari | Matsumoto T. (1983) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Late Turonian, on the basis of ammonite and inoceramid biostratigraphy; Romaniceras deverianum; originally entered as Middle Turonian. STRATIGRAPHIC POSITION: From near top of regional section. | mudstone | 93.5 - 89.3 Ma Late/Upper Cretaceous |
| Loc. Y5206 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Late Turonian, on the basis of ammonite and inoceramid biostratigraphy; Romaniceras deverianum; originally entered as Middle Turonian. STRATIGRAPHIC POSITION: From near top of regional section. | siltstone | 93.5 - 89.3 Ma Late/Upper Cretaceous |
| Loc. Y5207 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Middle Turonian, on the basis of ammonite and inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From near top of regional section. Lower Middle Turonian. | siltstone | 93.5 - 89.3 Ma Late/Upper Cretaceous |
| Loc. Y5218 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Middle Turonian, on the basis of ammonite and inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From near top of regional section. Lower part of Middle Turonian. | siltstone | 93.5 - 89.3 Ma Late/Upper Cretaceous |
| Loc. Y5281 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Early Cenomanian, on the basis of ammonite and inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From near base of regional section. | mudstone | 99.6 - 93.5 Ma Late/Upper Cretaceous |
| Loc. Y5282 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Early Cenomanian, on the basis of ammonite and inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From fallen calcareous concretions near base of regional section. | mudstone | 99.6 - 93.5 Ma Late/Upper Cretaceous |
| Loc. Y5285 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Early Cenomanian, on the basis of ammonite and inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From lower part of regional section. | claystone | 99.6 - 93.5 Ma Late/Upper Cretaceous |
| YEZ-12, Hakkinzawa | Collins H., Kanie Y., et al (1993) | Yezo | Pebble nodule from the upper part of the Middle Yezo Group | "siliciclastic" | 100.5 - 89.3 Ma Late/Upper Cretaceous |
| Loc. Y5091 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Late Albian, on the basis of ammonite and inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From base of regional section. | mudstone | 105.3 - 99.6 Ma Cretaceous |
| Loc. Y5096 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Late Albian, on the basis of ammonite and inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From base of regional section. | mudstone | 105.3 - 99.6 Ma Cretaceous |
| Loc. Y5098 - River Hakkinzawa [Yezo Gp] | Hirano H., Matsumoto T., et al (1977) | Yezo | STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit within the middle Yezo Gp, which unconformably overliesthe late Mesozoic Sorachi Gp, and is overlain by Cenozoic strata. AGE: Late Albian, on the basis of ammonite and inoceramid biostratigraphy. STRATIGRAPHIC POSITION: From base of regional section. | mudstone | 105.3 - 99.6 Ma Cretaceous |
Recorded Fossils
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
