[ Top ] [ Japanese ]

Iwatake Glaciolacustrine Deposits Nakano et al., 2002

• Coherent formation
• Pleistocene (MIS 3 - 4; 50,000 - 48,300 yBP, ¹⁴C)

• Sedimentary facies: Lacustrine
• Sedimentary facies: Low land behind the moraine
• Lithofacies (Upper): Interbedded peat and silt
• Lithofacies (Lower): Serpentinite gravel-bearing clay
• Sedimentary structures (Upper): Parallel stratification

• Thickness (Upper): 1.6 m
• Thickness (Lower): 0.5 m
• Lower limit: Unconformity (Iwatake stage)

• Distribution: Mount Iwatakeyama - Kitamatairi, Hakuba city, Kitaazumi county, Nagano pref.

• Nakano et al. (2002) Geology of the Shiroumadake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 105p. (in Japanese with English abstract 5p.)