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单词 bedrock mortar
释义
bedrock mortar
  • 简明释义
  • 基岩碎斑结构
  • 英英释义
  • abstract:
    • 1

      A bedrock mortar (or BRM) is an anthropogenic circular depression in a rock outcrop or naturally occurring slab, used by people in the past for grinding of grain, acorns or other food products.Archaeology online glossary There are often a cluster of a considerable number of such holes in proximity indicating that people gathered in groups to conduct food grinding in prehistoric cultures.

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更新时间:2025/3/17 7:37:10