 ... as indicated in the prevailing schistose structure, and the large development of the secondary minerals, chlorite, epidote and hornblende ; and smaller amounts of others. The alteration has advanced sufficiently far in the more schistose phase to...  Bulletin of the Geological Society of America - Seite 362von Geological Society of America - 1902Vollansicht - Über dieses Buch
 | 1903 - 692 Seiten
...rocks of the area here described have been greatly altered through pressure and chemical metarnorphism, as indicated in the prevailing secondary schistose...alteration has advanced sufficiently far in the schistose phase to destroy in most cases the original structure and minerals of the rock. 2. From structural,... | |
 | Sidney Paige - 1911 - 718 Seiten
...rocks of the area here described have been greatly altered through pressure and chemical metamorphism, as indicated in the prevailing secondary schistose...structure and minerals of the rock. 2. From structural, petrographie, and chemical evidences the rocks are shown to have been derived from an original andesite,... | |
 | Geological Survey (U.S.) - 1911 - 188 Seiten
...rocks of the area here described have been greatly altered through pressure and chemical metamorphism, as indicated in the prevailing secondary schistose...the original structure and minerals of the rock. 2. Prom structural, petrographic, and chemical evidences the rocks are shown to have been derived from... | |
 | North Carolina. Department of Conservation and Development - 1916 - 376 Seiten
...smaller amounts of others. The alteration has advanced sufficiently far in the more schistose phase to destroy, in most cases, the original structure...rock. "2. From structural, petrographic, and chemical evidence, it is shown that the rocks are derived from an original andesite. The altered andesite is... | |
 | 1917 - 244 Seiten
...rocks of the area here described have been greatly altered through pressure and chemical metamorphism, as indicated in the prevailing secondary schistose...secondary minerals — chlorite, epidote, and hornblende — nnd small amounts of others. The alteration has advanced sufficiently far in the schistose phases... | |
 | 1917 - 380 Seiten
...smaller amounts of others. The alteration has advanced sufficiently far in the more schistose phase to destroy, in most cases, the original structure...rock. "2. From structural, petrographic, and chemical evidence, it is shown that the rocks are derived from an original andesite. The altered andesite is... | |
 | Virginia. Division of Mineral Resources - 1925 - 762 Seiten
...smaller amounts of others. The alteration has advanced sufficiently far in the more schistose phase to destroy, in most cases, the original structure...rock. "2. From structural, petrographic, and chemical evidence, it is shown that the rocks are derived from an original andesite. The altered andesite is.... | |
 | Virginia Division of Mineral Resources - 1925 - 706 Seiten
...smaller amounts of others. The alteration has advanced sufficiently far in the more schistose phase to destroy, in most cases, the original structure...rock. "2. From structural, petrographic, and chemical evidence, it is shown that the rocks are derived from an original andesite. The altered andesite is... | |
 | 1906 - 918 Seiten
...smaller amounts of others. The alteration has advanced sufficiently far in the more schistose phase to destroy, in most cases, the original structure...rock. 2. From structural, petrographic and chemical evidence, it is shown that the rocks are derived from an original andesite. The altered andesite is... | |
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