hyp·a·bys·sal

(hĭp′ə-bĭs′əl, hī′pə-)

adj. Geology

Solidifying chiefly as a minor intrusion, especially as a dike or sill, before reaching the earth's surface. Used of rocks.

hyp′a·bys′sal·ly adv.

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.

hypabyssal

(ˌhɪpəˈbɪsəl)

adj

(Geological Science) (of igneous rocks) derived from magma that has solidified at shallow depth in the form of dykes, sills, etc

[C19: from hyp- + -abyssal]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

hyp•a•byss•al

(ˌhɪp əˈbɪs əl, ˌhaɪ pə-)

adj.

of or pertaining to any of various minor intrusions of igneous rock, as dikes and sills, that have crystallized at a moderate depth below the surface.

[1890–95]

hypabyssal

Describes rock that has solidified as an intrusion before reaching the Earth’s surface.

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References in periodicals archive

The [(La/Yb).sub.N] ratios of quartz show a negative correlation with formation depth of deposit (Zhao, 1997), indicating that the Gaosongshan gold deposit is a hypabyssal one, of which the [(La/Yb).sub.N] is much higher than 1.

Characteristics of genetic mineralogy of pyrite and quartz and their indicating significance in the Gaosongshan Gold Deposit, Heilongjiang Province, NE China/Caracteristicas de mineralogia genetica de piritas y cuarzos y su importancia en el yacimiento aurifero de Gaosongshan, Provincia de Heilongjiang, al noreste de China

The West Scotch Settlement porphyry is a small, hypabyssal felsic intrusion that is less than 1 kilometre in diameter.

U-Pb geochronology and geochemistry from the northeastern New River belt, southern New Brunswick, Canada: significance of the Almond Road Group to the Ganderian platformal margin

Geophysical results infer the Groundhog Project lies along the Northeast margin of the large Cretaceous granodiorite Kaskanak batholith and is intersected by a north-northeast-trending corridor of distinctive co-magmatic hypabyssal intrusives.

Chuchuna Minerals Company

Following Dickinson (2006), the term "microphanerite" here covers plutonic and hypabyssal lithic fragments.

The sherds of conquistadors: a petrological study of ceramics from Graciosa Bay and Pamua, Solomon Islands

Extrusive rocks (e.g., basalt and dacite) have much higher [rho] than those of intrusive rocks; among them, [rho] of plutonic rock is generally higher than that of hypabyssal rock (Table 2).

Petrophysical properties (density and magnetization) of rocks from the Suhbaatar-Ulaanbaatar-Dalandzadgad geophysical profile in Mongolia and their implications

These rocks have textures and compositions similar to those of their volcanic equivalents and might be the hypabyssal parts of the komanitic volcanic suites (Arndt et al.

Igneous rock associations 10. Komatiites

The basement of the graben and the fabric of the hills that surround it consist essentially of plutonic and hypabyssal Paleozoic rocks.

Relationship between thermal groundwater and environmental genesis of wetlands: the case of the Prats de Sant Sebastia, northwestern Mediterranean margin

(1987) Petrology of the alkalic hypabyssal and volcanic rocks at Cripple Creek, Colorado.

Famous mineral localities: the Cripple Creek mining district Colorado

Francois Mountains Complex regardless of inferred mode or depth of crystallization (volcanic phenocryst versus volcanic matrix versus hypabyssal ring pluton versus subvolcanic massif) or crystallization age (1.47 Ga versus 1.36-1.38 Ga) to be evidence for a single, pervasive alteration event subsequent to (or coincident with) the last major igneous event in the area.

Structural state of K-feldspar in the younger granites of the western St. Francois Mountains, southeastern Missouri: further evidence for pervasive alteration of the Mesoproterozoic St. Francois Mountains complex