Definition of penecontemporaneous in English:

penecontemporaneous

Line breaks: pene|con¦tem¦por|an¦eous
Pronunciation: /ˌpiːnɪkənˌtɛmpəˈreɪnɪəs
 
/

adjective

Geology
  • (Of a process) occurring immediately after deposition of a particular stratum.
    More example sentences
    • The depositional facies are consistent with penecontemporaneous, explosive volcanism.
    • The occurrence of penecontemporaneous flood basalt volcanism in the region further suggests that the uplift was caused by a rising mantle plume.
    • A penecontemporaneous river, the Walshville channel, restricted peat deposition along its course, and later deposited thick elastics over the peat.

Origin

early 20th century: from Latin paene 'almost' + contemporaneous.

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