Lexic.us

Definition of Diabase

1. n. A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone.

Definition of Diabase

1. Noun. (geology) A fine-grained igneous rock composed mostly of pyroxene and feldspar ¹

¹ Source: wiktionary.com

Definition of Diabase

1. an igneous rock [n -S] : DIABASIC [adj]

Medical Definition of Diabase

1. A basic, dark-coloured, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; often limited to rocks pretertiary in age. It includes part of what was early called greenstone. Origin: F. Diabase, fr. Gr. A crossing or passing over, fr.; + to go; so called by Brongniart, because it passes over to diorite. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Diabase

Literary usage of Diabase

Below you will find example usage of this term as found in modern and/or classical literature:

1. Report by Tasmania Dept. of Mines (1897)
"Parts of this dolerite become converted into diabase hy the ... Thus a diabase on the Blue Tier (Gould's Country) is a typical occurrence, the whole of the ..."

2. Proceedings of the American Philosophical Society Held at Philadelphia for by American Philosophical Society (1904)
"The diabase at that place breaks through the Miocene shales, following the ... Small inclusions of the shale are found in the diabase, but no alteration of ..."

3. Mineral Resources of Virginia by Thomas Leonard Watson, Ray Smith Bassler, Heinrich Ries, Roy Jay Holden (1907)
"diabase AND BASALT. Trap is the common name given to a class of basic eruptive ... In addition to its use as road metal, trap or diabase forms an excellent ..."

4. Bulletin of the Geological Institutions of the University of Uppsala by Geologiska institutionen, Mineralogisk-geologiska institutionen, Uppsala universitet (1908)
"The diabase, in making eruption, has melted the granite and mixed with it in many other ... The granitic veins and dykes that cross the diabase (south ..."

5. Results of Primary Triangulation and Primary Traverse: Fiscal Year 1904-05 by Samuel Stinson Gannett (1905)
"The diabase» have been greatly sheared and otherwise altered, ... Besides the diabase and other massive eruptives of the Henai Mountains there are igneous ..."

6. Contributions to the Pre-Cambrian Geology of Northern Michigan and Wisconsin by Rolland Craten Allen, L. P. Barrett, Ermine Cowles Case, W. I. Robinson (1915)
"The greater number of exposures exhibited are typical diabase but in places they grade into coarse textured gabbro. In the west side of the hill in section ..."

7. An investigation into the elastic constants of rocks: more especially with by Frank Dawson Adams, Ernest George Coker (1906)
"This is a very typical fresh olivine diabase, which occurs in the form of a large ... It is one of a number of similar diabase dykes, which occur in this ..."

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