Upper Nemuro Gr
Period:
Paleogene
Age Interval:
Province:
Hokkaido
Type Locality and Naming
Nemuro Belt
Synonym:上根室
Lithology and Thickness
Upper sequences consist of maddy, sandy and conglomeratic formations, represented by turbidite, bottom current and slump deposits (Kiminami 1975, 1983; Naruse 2003; Naruse & Otsubo 2011).
Lithology Pattern:
Aus Conglomerate
Relationships and Distribution
Lower contact
Upper contact
No data.
Regional extent
Nemuro Belt
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[144.13,44.11],[144.27,44.1],[144.36,43.96],[144.62,43.92],[144.8,43.99],[145.1,44.16],[145.31,44.33],[145.37,44.35],[145.39,44.23],[145.31,44.11],[145.16,43.98],[145.09,43.78],[145.15,43.68],[145.3,43.66],[145.37,43.59],[145.31,43.56],[145.25,43.59],[145.22,43.56],[145.3,43.36],[145.47,43.32],[145.58,43.38],[145.7,43.41],[145.83,43.38],[145.77,43.32],[145.5,43.18],[145.08,43.02],[144.7,42.94],[144.25,42.92],[143.93,42.81],[143.68,42.7],[143.61,42.77],[143.61,42.95],[143.66,43.1],[143.76,43.29],[143.94,43.66],[144.13,44.11]]]]}}
Fossils
No data.
Age
Age Span:
Beginning stage:
Danian
Fraction up in beginning stage:
0
Beginning date (Ma):
66.04
Ending stage:
Lutetian
Fraction up in the ending stage:
0
Ending date (Ma):
48.07
Depositional setting
The Nemuro Group has been regarded as representing forearc basin deposits based on their sedimentary facies (Kiminami 1983)， or as a frontal arc sequence based on the occurrences of effusive and intrusive rocks (Kimura & Tamaki 1985) .
Depositional pattern:
Additional Information
Compiler:
Hayato Ueda. 2g Hokkaido. in Moreno, T., WALLIS, S., Kojima, T. & Gibbons, W. (Eds) 2016. The Geology of Japan. Geological Society. London. 201-220.