Black sand

Black sand Yamanoi et al., 2016

Invalid synonym: Kurosuna II Bed

Coherent formation
Holocene (3.6 yBP, ¹⁴C)

Sedimentary facies: Terrestrial, Coastal sand dunes (Main), Relatively cooler climate, Slow deposition rate

Upper limit: Lithofacies boundary (AD 800 - AD 1000)
Lower limit: Lithofacies boundary

Shonai Sand Dunes
[ Upper ]
--------------
New dune
--------------
Black sand
--------------
Old dune
--------------
[ Lower ]

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Tsuruoka city - Sakata city -Yuza city, Yamagata Saitama pref.

Yamanoi et al. (2016) Jour. Geol. Soc. Japan, vol.122, no.12, pp.637-652, DOI