Middle Yezo Gr
Period:
Cretaceous
Age Interval:
Albian-Turonian
Province:
Hokkaido
Type Locality and Naming
Sorachi-Yezo Belt (Yezo Main Zone)
Synonym:
Lithology and Thickness
The middle Yezo Group is dominated by turbidites with calcareous micro- and mega-fossils. Littoral deposits reflecting eustatic sea-level changes are also found in several sections (Ando 1990a, b).
Lithology Pattern:
Aus Conglomerate
Relationships and Distribution
Lower contact
Lower Yezo Gr (conformable)
Upper contact
Upper Yezo Gr (conformable)
Regional extent
Sorachi-Yezo Belt (Yezo Main Zone)
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[142.15,45.33],[142.12,45.09],[142.12,44.99],[142.13,44.84],[142.17,44.71],[142.16,44.54],[142.15,44.39],[142.11,44.29],[142.11,44.06],[142.08,43.88],[142.16,43.67],[142.33,43.47],[142.32,43.41],[142.28,43.33],[142.22,43.18],[142.18,43.08],[142.21,43.01],[142.28,43.01],[142.22,42.94],[142.27,42.82],[142.43,42.74],[142.42,42.61],[142.5,42.42],[142.43,42.31],[142.25,42.39],[141.99,42.53],[141.95,42.7],[141.87,42.97],[141.82,43.23],[141.86,43.42],[141.87,43.6],[141.78,43.84],[141.74,44.03],[141.72,44.34],[141.63,44.81],[141.54,45.28],[141.53,45.45],[141.65,45.47],[141.69,45.44],[141.76,45.41],[141.83,45.44],[141.95,45.53],[142.08,45.39],[142.15,45.33]]]]}}
Fossils
Age
Age Span:
Beginning stage:
Albian
Fraction up in beginning stage:
0
Beginning date (Ma):
113.20
Ending stage:
Coniacian
Fraction up in the ending stage:
0
Ending date (Ma):
89.39
Depositional setting
Littoral
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.