The Elements of economic geology

Bibliographic data

Monograph

Identifikator:: 1773832379

URN:: urn:nbn:de:zbw-retromon-172798

Document type:: Monograph

Author:: Gregory, John W. http://d-nb.info/gnd/11683014X

Title:: The Elements of economic geology

Place of publication:: London

Publisher:: Methuen

Year of publication:: 1928

Scope:: XIV, 312 S.; graph. Darst.

Digitisation:: 2021

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

xiv. THE ELEMENTS OF ECONOMIC GEOLOGY FIG, 4I. The Bilbao anticline . . 42. Lake Superior iron ores 3 3 z 13. Lake Superior ores bounded by an impermeable surface "4. ton ore at Gellivaara . . . 3 . . Magnetite of the Adirondacks replacing felspar and quartz <u. The ore-sheet of Kirunavaara 47. Various processes of bauxite formation. 8. Formation of mica in gneiss . 49. Chlogopite lode at Loughborough . 50. China-clay mass in Cornwall - » 51. China-clay passing into quartz-porphyry 52. China-clay produced by acids from brown coal 53. Phosphate formation . . . . 54. Section across the German potash fields showing the relations of the four types of occurrence . . . 55. Salt dome at Baicoi oilfield . . . ' 56. Section across the German potash field north of the Harz Moun. tains . . * 6 57. The water table in an island . . 58. Underground water level and piezometers 59. Circulation of water in a porous bed ' 60. The ascent of water by rock pressure, Kynuna 61. Changes in the East Anglian estuaries ; 62. Shoaling of the Ceara breakwater, Brazil 53. Comparative oilfield sections « 2 PAGE 137 139 130 40 I 3 “54 3 159 yo 72 L172 201 208 213 215 224 226 231 233 243 247 282

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