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Bigach is an impact crater in Kazakhstan. It is 8 km in diameter and the age is estimated to be 5 ± 3 million years (Pliocene or Miocene). The crater is exposed at the surface. == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Bigach crater」の詳細全文を読む スポンサード リンク
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