Scientific Serials
1900; Nature Portfolio; Volume: 62; Issue: 1595 Linguagem: Inglês
10.1038/062092a0
ISSN1476-4687
Tópico(s)Geology and Paleoclimatology Research
ResumoAmerican Journal of Science, May.—Notes on the geology of the Bermudas, by A. E. Verrill. The present Bermuda Islands are the remnant of a very much larger island, covering an area of about 300 to 400 square miles. A subsidence of at Jeast 80 to loo feet took place at a comparatively recent period. The Greater Bermuda, as well as the present Bermudas, are composed of shell sand drifted from the sandy flats by the winds in former times into hills, and afterwards consolidated by infiltration and exposure into what is known as Aeolian limestone. The shell sand is constantly increasing in amount, chiefly by the annual growth and death of small shells, as in former periods, so that the total mass of the islands is probably still increasing beneath the sea. The “red soil” of Bermuda is mainly the residue left after the destruction and solution of the limestones. The islands rest on the hidden summit of an ancient volcano.—Some boiling point curves, by C. L. Speyers. The author shows that the equation
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