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词汇 marker horizon
释义

Definition of marker horizon in English:

marker horizon

noun
Geology
  • A layer of sedimentary rock possessing distinctive characteristics (as particular minerals, chemicals, or fossils) which enable it to be recognized at different locations; a marker bed.

Origin

1940s.

Definition of marker horizon in US English:

marker horizon

noun
Geology
  • A layer of sedimentary rock possessing distinctive characteristics (as particular minerals, chemicals, or fossils) which enable it to be recognized at different locations; a marker bed.

Origin

1940s.

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