Lexic.us

Definition of Dolerite

1. n. A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt.

2. n. A dark, crystalline, igneous rock, chiefly pyroxene with labradorite.

Definition of Dolerite

1. Noun. (geology) A fine-grained basaltic rock ¹

¹ Source: wiktionary.com

Definition of Dolerite

1. a variety of basalt [n -S]

Medical Definition of Dolerite

1. A dark-coloured, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt. Origin: Gr. Deceitful; because it was easily confounded with diorite. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Dolerite

Literary usage of Dolerite

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 ... The European types with which the Tasmanian Mesozoic dolerite may be compared, ..."

2. Proceedings of the Royal Irish Academy by Royal Irish Academy (1907)
"Below the junction with the Lias, the invading olivine-basalt shades downwards into olivine-dolerite. The latter, as has been often noted, ..."

3. Elements of Chemical and Physical Geology by Gustav Bischof (1859)
"Therefore, if these rocks are dolerite, they are very much decomposed, one having lost much of its silica, the other much of its bases. ..."

4. A Study of Ore Deposits for the Practical Miner: With Descriptions of Ore by James Philip Wallace (1908)
"dolerite. —The chief components of each are pyroxene or hornblende and ... Both dolerite and gabbro are distinctly crystalline, the latter being very coarse ..."

5. Rocks Classified and Described: A Treatise on Lithology by Bernhard von Cotta (1866)
"Besides the above-named more or less essential ingredients of dolerite, ... Becoming more compact in other varieties; dolerite passes over into basalt ..."

6. Progress Report by Geological Survey of Victoria, Family Planning Victoria (1884)
"ADOPTION OF NAME—dolerite. In adopting the name dolerite for this rock I have been ... Howitt* remarks that dolerite is only a basalt of coarser structure. ..."

7. Report of the Annual Meeting (1889)
"Boulder of dolerite, 37 X 30 x 18 in.; roughly triangular; ... In fields near the Green—Five smaller boulders of dolerite under 12 in. in diameter, ..."

8. A Thousand Days in the Arctic by Frederick George Jackson (1899)
"A view of the lower tier of the dolerite rock-mass at the west end of the cliffs of Cape Flora, which is here much broken up in places, being covered with ..."

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