米国地質調査局は,大西洋のシェルフで核を掘削しています
まとめ
米国大西洋のシェルフでの科学的な浅い掘削は,様々な岩石の年齢と炭化水素ガスを明らかにしました. 発見はまた,海上建設のための孔液塩分変動と沈殿物のエンジニアリング特性を詳細に説明しています.
科学分野:
- 海洋地質学 海洋地質学
- 地質物理学 地質物理学とは地質物理学です.
- ジオテクニカルエンジニアリング ジオテクニカルエンジニアリング
背景:
- 米国の大西洋大陸棚は,資源探査とインフラ開発の重要な地域です.
- 以前のシェルフの浅い地下の地質学的理解は限られ,包括的な評価を妨げていた.
研究 の 目的:
- 米国の大西洋大陸棚で,広範な科学的浅い掘削プログラムを実施するためです.
- 地下層図を線引きし,炭化水素潜在力を特定し,孔状流体特性を分析し,堆積物の工学特性を評価する.
主な方法:
- 浅い掘削作業は,アメリカ大西洋大陸棚の全域で実施された.
- 分析には,岩層の年代測定,炭化水素ガスの検出,孔液塩分測定,およびコアサンプルからの堆積物の工学特性評価が含まれていました.
主要な成果:
- プレイストセーンから白亜紀後期まで,ミオセンのリン酸塩とエオセンの炭酸塩を含む,描写された岩石.
- メリーランド州とニュージャージー州沖の2カ所で,成熟した石油の親和性を持つ軽炭化水素ガスを特定しました.
- 特定の地域における蒸発性層を示唆する塩分度が増加した,淡水から塩漬けの毛穴水に観察された;堆積物のコアは,変化する工学特性を示した.
結論:
- この掘削プログラムは,アメリカ大西洋のシェルフの浅い地質と資源の可能性について基本的な理解を提供した.
- 発見は,炭化水素の存在を強調し,オフショアエンジニアリングプロジェクトの地質技術的評価を伝える.
- 地化学的および地工学的データは,この地域の将来の探査と安全なインフラ開発に不可欠です.
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