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Mata Amarilla Formation : ウィキペディア英語版 | Mata Amarilla Formation
The Mata Amarilla formation is a stratigraphic division consisting of rocks deposited between the Albian and Santonian ages. The middle section was previously considered to be the Pari Aike Formation. ==Age== The middle section of the Mata Amarilla Formation has widely been regarded as Maastrichtian in age, but recent dating of a lava tuff layer shows that it dates back to 96.2 ± 0.7 Ma, during the Cenomanian.
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「Mata Amarilla Formation」の詳細全文を読む
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