 | | Report (issue) | | Page 1 D U.S. Department of the Interior U.S. Geological Survey Geology of St. John, U.S. Virgin Islands...Rankin—GEOLOGY OF ST. JOHN, U.S. VIRGIN ISLANDS—U.S. Geological Survey Professional Paper 1631 U.S. GEOLOGICAL...Trunk Bay on the northern coast of St. John, U.S. Virgin Islands. Trunk Cay is located just to the left of...Thatch Islands of the British Virgin Islands, and Mary Point, which is to the northeast on St. John. U... U.S. Department of the Interior U.S. Geological Survey Geology of St. John, U.S. Virgin Islands By Douglas |  | | Report (issue) | | U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY GEOLOGIC MAPS OF ST. JOHN, U.S. VIRGIN ISLANDS...preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the...purposes only and does not imply endorsement by the U.S. Government. 1997 DESCRIPTION OF MAP UNITS Dikes...vermiculite. Named for prominent dikes at Red Hook, Eastern St. Thomas quadrangle, where the dikes are intruded... which is also exposed in Tortola, British Virgin Islands. 40Ar/39Ar plateau age on hornblende of 38 |  | | Report (issue) | | according to the quantitative system of classification: U.S. Gool. Survey Prof. Paper 28, 1904. a Grubenmann...llllllebro;nd, W. F., U.S. Geol. Survey Dull.148, p. 16, 1897. • Plrsson, L. V., U.S. Geol. Survey Twentieth...mica, will o! -------·1 Cf. Hillebrand, W. F., U.S. Geol. Survey Bull. 148, p. 23, 189i. ACCURACY...to the apparent weight of the alumina •·St~·kes, H. N., U.S. Geol. Survey Bull.186, 1901. of the ·rock...24, pp. 362 et seq., 1902. 2 Hillebrand, W. F., U.S. Geol. Survey Dull.176, p. 55, 1900. a Pfrsson, L |
|
