南アフリカ,ブロンボス洞窟の石器にプレッシャー・フレークリングの初期の使用
Vincent Mourre1, Paola Villa, Christopher S Henshilwood
1INRAP Méditerranée, 561 rue Étienne Lenoir-KM Delta, 30900 Nîmes, France.
Science (New York, N.Y.)
|October 30, 2010
まとめ
石器の技術であるプレッシャー・フレッキングは,南アフリカで約7万5千年前に使用され,上古石器時代の関連が先行していた. この中石器時代の革新は,より鋭い双面点を生み出した.
科学分野:
- 考古学考古学とは
- 旧石器時代の研究
- 材料科学とは,材料科学である.
背景:
- 上古石器時代は伝統的に,約2万年前のプレッシャー・フレッキングの革新と関連付けられています.
- このテクニックは,石器を形作るための制御されたフラーク除去を伴う.
関連する概念動画
01:15Quarrying of Stone
Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the block.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the block.
01:14Bricks
Bricks, a fundamental building material, are crafted from fired clay and exhibit a range of shapes, sizes, and colors. The production process starts with extracting local clay or shale, which is then crushed, ground, and screened for a fine texture. The refined material is blended with water, creating a pliable mixture that can be formed into bricks using one of three processes: soft mud, dry press, or stiff mud methods.
Soft mud bricks are shaped in molds with high moisture content and can be...
Soft mud bricks are shaped in molds with high moisture content and can be...