May 13, 2017
ウェーブリップル 中期中新世 福島県 #地質 #地学 #地層 #リップル #新潟大
Wave-ripple cross-stratification in a Middle Miocene fine-grained sandstone bed. Fukushima, Japan.
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ウェーブリップル 中期中新世 福島県 #地質 #地学 #地層 #リップル #新潟大
Wave-ripple cross-stratification in a Middle Miocene fine-grained sandstone bed. Fukushima, Japan.
礫（れき）と砂でできた斜交層理 川の一方向の流れで堆積 約100万年前 十日町市 #地層 #地質
Trough type cross-stratification in Pleistocene fluvial deposits, Niigata.