lopolithn.
/ˈlɒpəʊlɪθ/ Geology.
A large intrusive mass similar to a laccolith but having the base centrally sunken.
ΘΚΠ
the world > the earth > structure of the earth > structural features > discontinuity or unconformity > [noun] > intrusion > others
laccolite1877
xenolith1894
bysmalith1898
stock1898
autolith1900
bathylite1902
phacolite1909
phacolith1910
cupola1911
lopolith1918
1918 F. F. Grout in Amer. Jrnl. Sci. 196 518 Professor John Barrell has suggested that as igneous forms they deserve a distinct name... The name proposed by the writer is ‘lopolith’ (from [Greek] λοπάς, a basin, a flat earthen dish, and λίθος, a stone).
1918 F. F. Grout in Amer. Jrnl. Sci. 196 518 Pronunciation, lō'polith.
1962 W. T. Huang Petrol. iii. 51 It [sc. magma] may be solidified at great depth, forming such large intrusives as batholiths, stocks, and lopoliths.
1972 M. P. Billings Structural Geol. (ed. 3) xvi. 343 In plan, lopoliths are arcuate or circular.
Derivatives
lopoˈlithic adj.
ΘΚΠ
the world > the earth > structure of the earth > structural features > discontinuity or unconformity > [adjective] > intrusive > others
xenolithic1900
batholithic1912
bysmalithic1933
lopolithic1959
1959 Econ. Geol. 54 1208 Cooling of a lopolithic mass would proceed under the influence of two cooling gradients.
1968 R. W. Fairbridge Encycl. Geomorphol. 281/2 The second type [of intrusive dome mountain] is the complex laccolith (or lopolithic) intrusion with broad sill-type interfingering tongues of igneous material penetrating the surrounding sediments.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).
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n.1918