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A large mass of igneous rock that has melted and intruded surrounding strata at great depths.

bath′o·lith′ic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈbæθəlɪθ) or


(Geological Science) a very large irregular-shaped mass of igneous rock, esp granite, formed from an intrusion of magma at great depth, esp one exposed after erosion of less resistant overlying rocks
ˌbathoˈlithic, ˌbathoˈlitic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈbæθ ə lɪθ)

a large body of intrusive igneous rock believed to have crystallized at a considerable depth below the earth's surface.
bath`o•lith′ic, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


An immense, dome-shaped, deep-seated mass of intrusive igneous rock.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.batholith - large mass of intrusive igneous rock believed to have solidified deep within the earth
granite - plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartz
igneous rock - rock formed by the solidification of molten magma
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References in periodicals archive ?
Nearby, the Yeoval Batholith to the northeast is spatially and genetically associated with Cu-Au-Mo mineralisation.
Historical work at Eagle by Noranda and others outlined a 3 km long trend of copper mineralization near the southern margin of the Hogem batholith. Reconnaissance mapping and rock sampling completed in 2019 by Arcwest focused on delineating higher grade lenses over 2.7 km of the mineralized trend.
The granite of Kumrat area, upper Dir belongs to Kohistan Batholith is sub-equigranular to in-equigranular, coarse to medium grained.
Within the Lower Volcanic Complex, we identify a Late Cretaceous volcanic succession (~77 to 69 Ma) correlative with the Tarahumara formation from southern Sonora and coeval with the San Ignacio batholith exposed to the west.
Now, by tracking seismic sound waves and magnetotelluric data (electrical conductivity beneath the surface), USGS and Oregon State University geophysicists have identified a vast underground rock formation--a 'batholith'--near the Cascadia arc, that obstructs the rise of magma.
Three main geological units lie in the area of El Vapor district, (Fig 1): (i) San Lucas quartz-feldspathic gneisses (Gonzalez, 2001), which contains lenses of amphibolite and marble and are Proterozoic (Feininger et al., 1972); (ii) Segovia batholith of Jurassic age (160 [+ or -] 7 M.a., K/Ar in hornblende, Feininger et al., 1972), consists of a diorite with textural and compositional variations of quartz diorite and locally hornblende gabbro; and finally, (iii) Segovia sedimentary rocks in the west of Segovia mainly composed of black shales interbedded with siltstones, sandstones and intraformational conglomerates, which in the north of the area have been dated between the upper Aptian and the lower Albian (Feininger et al., 1972) based on macro-fauna dating.
Figure 2 shows that the Fe skarn deposits primarily distribute along the southern margin of the Echeng and Jinshangdian batholiths and the southwestern edge of the Lingxiang batholith (e.g., Chengchao, Jinshandian, and Lingxiang Fe deposits).
The Silurian (Ludlovian to Pridolian) to Late Devonian (Famennian) Saint George Batholith in southwestern New Brunswick is a large composite intrusion (2000 [km.sup.2]) that was emplaced into the margin of the peri-Gondwanan microcontinent of Ganderia (Fig.