北ユーコンの遺物に関する新しい年代:ホロセーン,上プレイストセーンではない
Science (New York, N.Y.)
|May 9, 1986
まとめ
新しい放射性炭素年代測定法により,ユコン領におけるプレイストセンの時代と以前考えられていた4つの遺物が,実際にはホロセンの終わりに由来していることが明らかになった. 1つのアーティファクト
科学分野:
- 考古学考古学とは
- 四次科学とは四次科学である.
- 放射性炭素年代測定法による年代測定
背景:
- ユーコン準州は,北米における初期の人間の存在に関する研究の焦点となっている.
- 以前の研究では,人工物の年代測定に基づいて,プレイストセンの上半期に人間の占領が示唆されていた.
- "オールド・クロウ・フィッシャー (Old Crow flesher) "を含む特定の遺物は,この初期の占領の重要な証拠であった.
研究 の 目的:
- 以前はプレイストセンの上部に属していた4つの重要な遺物の年齢を再評価する.
- ユーコン準州における人間の定住の時間軸を明確にするために.
- 以前の放射性炭素年代測定の結果の不正確さを修正するために.
主な方法:
- 以前に研究された4つの遺物の新しい放射性炭素年代を取得しました.
- 先進的な放射性炭素年代測定技術の応用.
- 新しい日付と以前に公表された年齢を比較する.
主要な成果:
- 4つの人工物は全てホロセンの末期のものと確認されています.
- 新しい日付は,この地域における人間の存在の受け入れられた時間軸を大幅に修正する.
- "オールド・クロウ・フィッシャー (Old Crow flesher) "という人工物には,初期放射性炭素年代誤差が26,000年近くあった.
結論:
- プレイストセンの上期にユコン準州で人類が住んでいたという証拠は,これらの遺物によって裏付けられていない.
- 現在では,ユーコン準州における人間の存在は,主にホロセンの末期にあると理解されています.
- この研究は,古代環境と考古学的研究における厳格で最新の年代測定方法の重要性を強調しています.
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