#dc#batman#dc comics#bruce wayne#dick grayson#batfam#tim drake#batfamily#dc fanart
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平行葉理区間にはさまれたウェーブリップル 中右のリップルに見える乱れはおそらく底生生物が急激な埋積から脱出した時の生痕化石 更新世
Wave-ripple cross-bedding within a parallel-bedded, sandy succession. Probable trace fossil by a benthos escaping from rapid sand deposition (at a crest of wave-ripple at middle right). Pleistocene.
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.
