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Sankebetsu Fm , Tomamae District, Rumoi Subprefecture, Hokkaidō Prefecture, Japan
| Lat/Long (Decimal) | 44.3578,141.702 |
|---|---|
| Co-ordinates Derivation | based on nearby landmark |
| Mindat.org Region (for given coordinates) | Tomamae District, Rumoi Subprefecture, Hokkaidō Prefecture, Japan |
Collections
| Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
|---|---|---|---|---|---|
| Sankebetsu Fm (lower part) | Kafanov A. I., Ogasawara K., et al (2005) | Sankebetsu | STRATIGRAPHIC RELATIONS: From Sankebetsu Fm (Sankebetsu Sandstone), which unconformably overlies the Sakasagawa Fm (Late Eocene) and is unconformably overlain by the Chikubetsu Fm (Middle Miocene). THICKNESS: Unknown thickness of unit. AGE: Early Miocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: Lower part of formation. | sandstone | 23.03 - 15.97 Ma Miocene |
| Sankebetsu Fm (upper part) | Kafanov A. I., Ogasawara K., et al (2005) | Sankebetsu | STRATIGRAPHIC RELATIONS: From Sankebetsu Fm (Sankebetsu Sandstone), which unconformably overlies the Sakasagawa Fm (Late Eocene) and is unconformably overlain by the Chikubetsu Fm (Middle Miocene). THICKNESS: Unknown thickness of unit. AGE: Early Miocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: Upper part of formation. | sandstone | 23.03 - 15.97 Ma Miocene |
| Sakasagawa Fm - Haboro coal field, Hokkaido | Kafanov A. I., Ogasawara K., et al (2005) | Sakasagawa | STRATIGRAPHIC RELATIONS: From "Sakasagawa" Fm , which unconformably overlies the Sankebetsu Fm (Ealry Miocene) and unconformably overlies the Early Eocene Haboro Fm. THICKNESS: Unknown thickness of unit. AGE: Late Eocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: Collection a composite list for entire formation. | sandstone | 37.2 - 33.9 Ma Paleogene |
Recorded Fossils
References
| Kafanov A. I., Ogasawara K., et al (2005) Cenozoic molluscan (Bivavia) cenozone of Hokkaido, Northern Japan, Science Report, Institute of Geosciences, Univeristry of Tsukuba 26, 1-12 |
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!
