Online Encyclopedia

ACADIAN

Online Encyclopedia
Originally appearing in Volume V01, Page 109 of the 1911 Encyclopedia Britannica.
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ACADIAN, in geology, the name given by Sir J. W. Dawson in 1867 to a series of black, red and green shales and slates, with dark grey limestones, which are well developed at St John, New Brunswick; Avalon in E. Newfoundland, and Braintree in E. Massachusetts. These rocks are of Middle Cambrian age and possess a Paradoxides fauna. They have been correlated with limestone beds in Tennessee, Alabama, Central Nevada and British Columbia (St Stephen). See CAMBRIAN SYSTEM; also C. D. Walcott, Bull. U.S. Geol. Survey, No. 81, 1891; and Sir J. W. Dawson, Acadian Geology, 1st ed. 1855, 3rd ed. 1878.
End of Article: ACADIAN
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