penecontemporaneous
/ˌpiːnɪkənˌtɛmpəˈreɪnɪəs
/adjective Geology
(Of a process) occurring immediately after deposition of a particular stratum.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.