 | Josiah Dwight Whitney - 1854 - 530 페이지
...metalliferous ores, within a crevice or fissure which had its origin in some deep-seated cause, and may be presumed to extend for an indefinite distance...connected with extensive movements of the earth's crust, and for this reason they are believed to extend indefinitely downwards; an assumption which... | |
 | Josiah Dwight Whitney - 1854 - 556 페이지
...has been filled more or less perfectly with mineral substances ; or, in other words, an aggregation of mineral matter, accompanied by metalliferous ores,...which had its origin in some deep-seated cause, and may be presumed to extend for an indefinite distance downwards. True veins are almost universally admitted... | |
 | Iowa Geological Survey, James Hall, Josiah Dwight Whitney - 1858 - 538 페이지
...may be divided into irregular and regular. The irregular, unstratified deposits include : igeneous eruptive masses of ore, as for instance, the iron...connected with extensive movements of the earth's crust, and for this reason they are believed to extend indefinitely downwards; an assumption which... | |
 | 1860 - 536 페이지
...eruptive masses of ore, as for instance, the iron mountains of Lake Superior and Missouri ; stock werk deposits, or bodies of rock impregnated over an irregular...connected with extensive movements of the earth's crust, and for this reason they are believed to extend indefinitely downwards ; an assumption which... | |
 | Wisconsin. Commissioners of the Geological, Mineralogical, and Agricultural Survey - 1862 - 516 페이지
...parallel with the stratification, and not to be depended on in depth. Gash-veins may cross the formation at any angle, but are limited to one particular group...connected with extensive movements of the earth's crust ; and for this reason they are believed to extend indefinitely downwards : an assumption which... | |
 | James Hall, J. D. Whitney - 1862 - 526 페이지
...parallel with the stratification, and not to be depended on in depth. Gash-veins may cross the formation at any angle, but are limited to one particular group...connected with extensive movements of the earth's crust ; and for this reason they are believed to extend indefinitely downwards : an assumption which... | |
 | Josiah Dwight Whitney - 1862 - 390 페이지
...parallel with the stratification, and not to be depended on in depth. Gash-veins may cross the formation at any angle, but are limited to one particular group...connected with extensive movements of the earth's crust; and for this reason they are believed to extend indefinitely downwards : an assumption which... | |
 | Henry Youle Hind - 1865 - 302 페이지
...parallel with the stratification, and not to he depended on in depth. Gash-veins may cross the formation at any angle, but are limited to one particular group...a crevice or fissure, which had its origin in some deep seated cause, and which may be presumed to extend for an indefinite distance downwards."* True... | |
 | Ovando James Hollister - 1867 - 482 페이지
...has been filled more or less perfectly with mineral substances ; or, in other words, an aggregation of mineral matter, accompanied by metalliferous ores,...which had its origin in some deep-seated cause, and may be presumed to extend for an indefinite distance downwards. True veins sometimes attain a length... | |
 | Adolph Sutro - 1868 - 256 페이지
...which has been filled more or less perfectly with mineral snbstances, or in other words, an aggregation of mineral matter, accompanied by metalliferous ores,...which had its origin in some deep-seated cause, and may be presumed to extend for an indefinite distance downwards." According to the theory accepted by... | |
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Gash veins may cross the strata at any angle ; but are limited to one particular group of strata, and are peculiar to the unaltered sedimentary rocks. True veins are aggregations of mineral matter, accompanied by metalliferous ores, within a crevice or... 
