silicify

si·lici·fy (sə lis′ə fī′)

transitive verb -·fied′, -·fy′·ing

to convert into or impregnate with silica; specif., petrify ()

Etymology: < L silex (see silex) + -fy

intransitive verb

to become silicified, as wood

si·lic′i·fi·ca′·tion noun

Object

fauna: Very rich and diverse fossils, with silicified marine faunas.

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