trappean

British  

/ ˈtræpɪən, trəˈpɪən /

adjective

1. rare of, relating to, or consisting of igneous rock, esp a basalt

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Etymology

Origin of trappean

C19: from _trap ³

Example Sentences

See Examples For:

trappean

I noticed here a trappean dyke, but the general formation of this end of King Island exactly corresponded with that about Captain Smith's house, which shows that it is a continuous ridge of granite.

From Discoveries in Australia, Volume 1. With an Account of the Coasts and Rivers Explored and Surveyed During The Voyage of H.M.S. Beagle, in the Years 1837-38-39-40-41-42-43. By Command of the Lords Commissioners of the Admiralty. Also a Narrative Of Captain Owen Stanley's Visits to the Islands in the Arafura Sea. by Stokes, John Lort

I observed boulders of greenstone in several places; and on the islet of Villegagnon, and likewise on the coast some miles northward, two large trappean dikes.

From Geological Observations on South America by Darwin, Charles

Dark trappean rocks full of hornblende have in many places burst through these schists, and appear in nodules on the surface. 

From A Popular Account of Dr. Livingstone's Expedition to the Zambesi and its tributaries And of the Discovery of Lakes Shirwa and Nyassa, 1858-1864 by Livingstone, David

The two principal families of trappean or volcanic rocks are the basalts and the trachytes, which differ chiefly from each other in the quantity of silica which they contain.

From The Student's Elements of Geology by Lyell, Charles, Sir

The latter was close to the spot where the observations were made, and where I noticed some trappean dykes intersecting the granite in a North-North-West direction.

From Discoveries in Australia, Volume 2 Discoveries in Australia; with an Account of the Coasts and Rivers Explored and Surveyed During the Voyage of H.M.S. Beagle, in The Years 1837-38-39-40-41-42-43. By Command of the Lords Commissioners Of the Admiralty. Also a Narrative of Captain Owen Stanley's Visits To the Islands in the Arafura Sea by Stokes, John Lort