bioclast

noun bio·clast \ ˈbī-(ˌ)o-ˌklast \

Definition of bioclast

plural bioclasts
geology
:a fragment of biological origin (such as a shell fragment or fossil) occurring in sedimentary rock
  • You can have fabrics full of bioclasts—fragments of organic origin, such as bits of plants or clamshells—and you can classify the kinds of mineral grains, their size and distribution.
  • —Karen Chinquoted in DiscoverJune 1996

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First Known Use of bioclast

1963


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