 Hunt, animal life may have afforded part of the carbonaceous material, and, perhaps, as large a part as vegetable life. The presence of graphite in large deposits occurring both in beds and veins in the Laurentian rocks, clearly determines that its origin...  Manual of Geology: Theoretical and Practical - Page 26by John Phillips - 1885Full view - About this book
 | James D. Dana - 1875 - 846 pages
...pointing clearly to the existence of life before the close of this era. Animal life, as Hunt observes, may have afforded part of the carbonaceous material,...and, perhaps, as large a part as vegetable life. The plants must have been the lowest of Cryptogams, or powerless species, and mainly, at least, marine... | |
 | Geological Society of London - Electronic journals - 1881 - 444 pages
...carbonaceous matters, perforations or worm-burrows." Dr. Dawson strongly and fairly argues for associated life. The presence of graphite in large deposits occurring...and deposition were contemporaneous with the mass or con- ' taming rock ; the graphite, again, is associated with calcite, quartz, and orthoclase. It is... | |
 | Kevin J. Donohoe, Annick Van den Abbeele - Medical - 1889 - 300 pages
...mass which fell at Cranbourne near Melbourne in 1861. Etheridge (Pros. Address, 18S1, p. 26) remarks: "The presence of graphite in large deposits, occurring...and deposition were contemporaneous with the mass of the containing rock; the graphite, again, is associated with calcite quartz, and orthoclase." Sterry... | |
 | A. Irving - Crystalline rocks - 1889 - 182 pages
...recent writers of text-books (see Geikie, p. 639). Etheridge (Pres. Address, 1881, p. 26) remarks: "The presence of graphite in large deposits, occurring...and deposition were contemporaneous with the mass of the containing rock; the graphite, again, is associated with calcite quartz, and orthoclase." In... | |
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