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ˌpenecontempoˈraneous, a. Geol.
[f. pene- + contemporaneous a.]
(See quot. 1972.)
1901S. Buckman in Q. Jrnl. Geol. Soc. LVII. 144 Brought about by what may be called penecontemporaneous denudation. 1939W. H. Twenhofel Princ. Sedimentation x. 375 The present trend of opinion considers that much chert and flint were deposited contemporaneously with the enclosing rocks. The views of origin may be placed in three classes of contemporaneous (syngenetic), penecontemporaneous, and subsequent (epigenetic). 1963Jrnl. Sedimentary Petrology XXXIII. 64 Geologic data allow an assignment of possible penecontemporaneous (early diagenetic) origin to the dolomites of this group. 1969Nature 22 Nov. 821/2 There is evidence of post-depositional weathering penecontemporaneous with deposition. 1972Gloss. Geol. (Amer. Geol. Inst.) 525/2 Penecontemporaneous, said of a geologic process, or resultant structure or mineral, occurring immediately after deposition but before consolidation of the enclosing rock.
Hence ˌpenecontemporaˈneity, the fact of being penecontemporaneous; ˌpenecontempoˈraneously adv.
1933P. G. H. Boswell On Mineral. Sedimentary Rocks i. 1 The mode of formation of matrices and minerals that have developed penecontemporaneously or subsequently in the rocks. 1958Q. Jrnl. Geol. Soc. CXIV. 45 The speaker had been unable to detect any sign of overprinting between these two fold systems..; this was interpreted as proof of penecontemporaneity of the folding. 1964Sedimentology III. 136 The observations of uniform directions in certain penecontemporaneously slumped beds. 1979Nature 7 June 485/1 The Entrance and the Exit Quarries, where sedimentation occurred penecontemporaneously in two separate depositories. |