まとめ
カリフォルニアのダイアゲネティック・クリストバライト.
科学分野:
- 地質化学 地質化学
- ミネラロジーは,鉱物学です.
- 堆積地 Petrology 堆積地ペトロロジーについて
背景:
- カリフォルニア州にあるモンテレー・シェール形成.
- シリカポリモルフのダイアゲンティックな変化
- クリストバライトの構造と特性
研究 の 目的:
- ダイアゲネティック・クリストバライトにおける構造的変化を調査する.
- モントレー・シェイルのクリストバライトを様々な埋葬深さで分析した.
- クリストバライトをチャートとポルセラナイトで比較する.
主な方法:
- X線 difrraction (XRD) 分析による分析である.
- d(101) の間隔を測定する
- 異なる埋葬の深さから採取した鉱物サンプルを比較.
主要な成果:
- 埋葬の深さが増加するにつれて,4.115から4.040アングストームまでの間隔でd(101) の減少が観察されました.
- ポルセラナイトのクリストバライトは,関連するチャートよりも小さなd(101) スペース (0.0040.015アングストーム) を示した.
- クリストバライトにおける漸進的な構造変化の兆候
結論:
- 埋葬の深さは,クリストバライトの内部構造に大きく影響を与えます.
- ポルセラナイトにおけるクリストバライトの後の形成は,構造的な違いを説明する可能性がある.
- ダイアゲネシス過程を理解することは,シリカのダイアゲネシスを解釈する上で極めて重要です.
さらに関連する動画
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