 ... but they represent a later stage of igneous activity. The fissures they fill were the result of various tensional strains or contractions, possibly consequent upon the cooling of the granite. In color these dikes vary from bluish gray to light and...  Bulletin of the United States Geological Survey - Seite 178von Geological Survey (U.S.) - 1910Vollansicht - Über dieses Buch
 | 1907 - 1026 Seiten
....these dikes vary from bluish gray to light and dark reddish. The texture of sonic aplites is so fine that the mineral particles can not be distinguished with the unaided eye; that of others is so coarse that the feldspar and mica may be thus detected. Under the microscope the... | |
 | Thomas Nelson Dale - 1907 - 240 Seiten
...these dikes vary from bluish gray to light and dark reddish. The texture of some aplites is so fine that the mineral particles can not be distinguished with the unaided eye; that of others is so coarse that the feldspar and mica may be thus detected. Under the microscope the... | |
 | Benjamin Kendall Emerson, Joseph Hartshorn Perry - 1907 - 700 Seiten
...these dikes vary from bluish gray to light and dark reddish. The texture of some aplites is so fine that the mineral particles can not be distinguished with the unaided eye; that of others is so coarse that the feldspar and mica may be thus detected. Under the microscope the... | |
 | Thomas Nelson Dale - 1908 - 458 Seiten
...these dikes vary from bluish gray to light and dark reddish. The texture of some aplites is so fine that the mineral particles can not be distinguished with the unaided eye ; that of others is so coarse that the feldspar and mica may be thus detected. Under the microscope... | |
 | Thomas Nelson Dale - 1908 - 250 Seiten
...these dikes vary from bluish gray to light and dark reddish. The texture of some aplites is so fine that the mineral particles can not be distinguished with the unaided eye ; that of others is so coarse that the feldspar and mica may be thus detected. Under the microscope... | |
 | George Samuel Rice - 1910 - 820 Seiten
...Smith Branch (County) quarry, near Columbia; the Anderson quarry, 5 miles west of Rion, in Fan-field County; and theCasparis Stone Company's quarry, near...some microcline), sodalime feldspar (oligoclase), quart/,, ;i little biotite, accessory apatite, and secondary chlorite and epidote. At the Anderson... | |
 | Thomas Nelson Dale, Herbert Ernest Gregory - 1911 - 698 Seiten
...these dikes vary from bluish gray to light and dark reddish. The texture of some aplites is so fine that the mineral particles can not be distinguished with the unaided eye; that of others is so coarse that the feldspar and mica may be thus detected. Under the 1 Woodworth,... | |
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