overplacementn.
/ˌəʊvəˈpleɪsm(ə)nt/, U.S. /ˌoʊvərˈpleɪsm(ə)nt/ Geology. Now rare (perhaps disused).
The deposition of soil material or rock debris at the foot of a slope largely or wholly by the action of gravity; colluvial deposition.
ΘΚΠ
the world > space > relative position > high position > position upon > [noun] > placing upon or above
onlayinga1400
imposition1598
superimposition1611
superinduction1650
superposition1830
overlaying1862
overplacement1877
1877 Amer. Naturalist 11 638 The following is a list of papers read relating to geology, zoölogy, botany, anthropology, and microscopy:..J. W. Powell, Overplacement.
1888 Science 28 Sept. 150/2 Overplacement soils: i.e., those formed from rocks that have been transported by gravity, as talus soils, land-slide soils; also those formed of alluvial cone rocks.
1896 J. W. Powell in Physiogr. U.S. (National Geogr. Soc.) 13 The lowlands have a great overplacement of these rock materials.
1913 Science 27 June 981/1 The reference to ‘loose shale, sharply inclined’ up..the hill might indicate overplacement due to creep.
This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022).
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n.1877