overplacementn.

Brit.

/ˌəʊvəˈpleɪsm(ə)nt/, U.S.

/ˌoʊvərˈpleɪsm(ə)nt/

Origin: Formed within English, by derivation. Etymons: over- prefix, placement n.

Etymology: < over- prefix + placement n. Attributed to J. W. Powell (1834–1902), Director of the U.S. Geological Survey from 1881, and recorded chiefly in his writings.

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).

单词	overplacement
释义	overplacementn. Brit. /ˌəʊvəˈpleɪsm(ə)nt/, U.S. /ˌoʊvərˈpleɪsm(ə)nt/ Origin: Formed within English, by derivation. Etymons: over- prefix, placement n. Etymology: < over- prefix + placement n. Attributed to J. W. Powell (1834–1902), Director of the U.S. Geological Survey from 1881, and recorded chiefly in his writings. 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). < n.1877
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