The Silurian Hypothesis: Would It Be Possible to Detect an Industrial Civilization in the Geological Record? [PDF]
If an industrial civilization had existed on Earth many millions of years prior to ourown era, what traces would it have left and would they be detectable today?
Frank, Adam, Schmidt, Gavin A.
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Multiply remagnetized Silurian carbonate sequence in Estonia [PDF]
Estonian Journal of Earth Sciences, 2008 Palaeomagnetic studies were carried out on Silurian sedimentary rocks of Estonia. The studied sequence (126 samples from 4 localities) is composed of Silurian lime- and dolostones of Llandovery and Wenlock age (444–423 Ma).
Preeden, Ulla +3 more
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On Silurian Erratics in Wharfedale [PDF]
Proceedings of the Yorkshire Geological Society, 1871 Some years ago I called attention, in a paper on the “Drift of the Yorkshire Uplands,” read before the Geological Society of London, and in the pages of the “Geological Magazine,” to the occurrence of Silurian Boulders in a part of Wharfedale. These boulders are foreigners, as no Silurian rocks exist in place in any part of Wharfedale, at the surface ...
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Mineralogical characterization of Sn deposits from the Santa Fe District, Bolivia [PDF]
, 2015 The Sn-Zn-Pb-Ag Japo-Santa Fe-Morococala ore deposit is located in the Central Andean Belt province. The ore mineralization is hosted in a Paleozoic metasedimentary sequence and porphyritic Oligocene-Miocene igneous rocks. Ore minerals occur in veins and
Alfonso Abella, María Pura +4 more
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On the occurrence of a lituitean in the Upper Silurian rocks of Bowning, New South Wales [PDF]
, 1904 R. Etheridge
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IV.—Descriptions of certain peculiar bodies which may be the opercula of small Gasteropoda, discovered by Mr. James Bennie in the carboniferous limestone of law quarry, near Dalry, Ayrshire, with notes on some Silurian opercula [PDF]
, 1881 R. Etheridge
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The Silurian-Devonian Boundary [PDF]
Geological Magazine, 1968 The selection of the base of the Monograptus uniformis zone as the new Silurian-Devonian boundary as proposed by C. H. Holland (for reference, see this Bibliography Vol. 31, No. 3, 18 E67-02281; see also No. 9, 18 E67-08162) is examined. It is felt that there is no need to establish a new boundary until a datum horizon is found that meets more ...
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III.—On the Transition Beds between the Devonian and Silurian Rocks [PDF]
, 1870 Alfred Marston
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The Geologic Features of the Occurrence of Copper in North America [PDF]
, 1933 Copper is of such widespread natural occurrence in North America and there are so few metal-mining districts that have not contributed to its production that it is obviously necessary in any brief general treatment of the geology of the copper deposits ...
Ransome, F. L.
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Chitinozoan diversity in the East Baltic Silurian [PDF]
Estonian Journal of Earth Sciences, 2009 Data on the diversity of the East Baltic Silurian chitinozoans have been compared to global chitinozoan biozones that are approximately correlated with the graptolite scale. The total diversity and balanced total diversity curves have three main positive
Nestor, Viiu
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