...I have no doubt but that it is formed by some of the basaltic dikes which we now saw, for they generally ran toward that point... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...In one partsixty-two strata are revealed, but at the Victoria Falls (which aresimply a rent) the basaltic rock is stratified as far as our eyes couldsee down the depth of 310 feet...
David Livingstone 「The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873」
...There was thebright black of basaltic formation, and in it—though he knew theimpossibility—was shining the sun...
Various 「Astounding Stories of Super-Science, June, 1930」
...Some of the neighbouring cliffs, for several yards, were formed into basaltic columns...
David Collins 「An Account of the English Colony in New South Wales, Vol. 2」
...The figure of the shore, between what is now called Cape Basaltes and Cape Pillar, exhibited one of those great works of nature which seldom fall to excite surprise: it was all basaltic...
David Collins 「An Account of the English Colony in New South Wales, Vol. 2」
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