ホーム > Term: analytic group
analytic group
A rock-statigraphic unit formerly classed as a formation but now called a group because subdivisions of the unit are considered to be formations.
- スピーチの一部 noun
- 産業/ドメイン 炭鉱
- カテゴリ 炭鉱全般; Mineral mining
- Government Agency: USBM
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作成者
- ed.young
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