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The Silurian system was first identified by the Scottish geologist Roderick Murchison, who was examining fossil-bearing sedimentary rock strata in south Wales in the early 1830s. He named the sequences for a Celtic tribe of Wales, the Silures , inspired by his friend Adam Sedgwick , who had named the period of his study the Cambrian , from a ...
The Silurian hypothesis is a thought experiment, [1] which assesses modern science's ability to detect evidence of a prior advanced civilization, perhaps several million years ago. The most probable clues for such a civilization could be carbon , radioactive elements or temperature variation.
The Cayugan Series contains a number of carbonate, shale and evaporite formations of the upper Silurian System of sedimentary strata in eastern North America. [1] It was formed during a period of marine transgression, and is near the end of the placid shallow marine environments of the Cambrian through Ordovician periods.
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Silurian United States: geologic formations of the Silurian Period, in Paleozoic Era United States, North America. See also the preceding Category:Ordovician United States and the succeeding Category:Devonian United States
This timeline of Silurian research is a chronological listing of events in the history of geology and paleontology focused on the study of Earth during the span of time lasting from 443.4–419.2 million years ago; the Silurian, and the legacies of this period in the rock and fossil records.
View history; General ... Silurian System of North America (25 P) Pages in category "Silurian geology of North America"
Silurian North America: geologic formations of the Silurian Period in Paleozoic Era North America See also the preceding Category:Ordovician North America and the succeeding Category:Devonian North America