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lopolithenUK
lop·o·lith L5265500 (lŏp′ə-lĭth)n. A large, bowl-shaped body of igneous rock intruded between layers of sedimentary rock.
[Greek lopas, flat dish, casserole + -lith.]lopolith (ˈlɒpəlɪθ) n (Geological Science) a saucer- or lens-shaped body of intrusive igneous rock, formed by the penetration of magma between the beds or layers of existing rock and subsequent subsidence beneath the intrusion. Compare laccolith[C20: from Greek lopas dish + -lith]lopolithA saucer-shaped intrusion (some are huge) between rock strata.LopolithenUK
lopolith[′läp·ə‚lith] (geology) A large, floored intrusive body that is sunken centrally into the shape of a basin due to sagging of the underlying country rock. Lopolith a type of occurrence of magmatic rock in the form of a smooth basin with a depressed central area and raised rims. It is believed that lopoliths are formed when magma which has intruded into the earth’s crust draws close to the earth’s surface and the sedimentary rock underlying the lopolith sinks in the area of the magma chamber. |