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Showing 1 to 20 of 96 for “"Silurian"”.
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Palaeobiology of Silurian trilobites from North Greenland
The Telychian (Llandovery, Silurian) reefs of North Greenland yield extensive collections of diverse and remarkably well preserved trilobites. The collections comprise 36 named trilobite species (32 new), and 30 under open nomenclature. These are assigned to 32 genera (six new). Members of the …
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The silurian of Pictou County, Nova Scotia
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1960.
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The Silurian of northeastern Aroostook County, Maine.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1970.
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Morphology and Taxonomy of Some Middle Silurian Ostracoda
Made available in DSpace on 2014-12-04T19:13:52Z (GMT). No. of bitstreams: 1 5904583.pdf: 5294864 bytes, checksum: 6a901483c016afd42e4698f5597653a7 (MD5) Previous issue date: 1959
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Ostracodes From the Henryhouse Formation (Silurian) of Oklahoma
Made available in DSpace on 2014-12-04T19:14:22Z (GMT). No. of bitstreams: 1 6303297.pdf: 3185676 bytes, checksum: e6b1344d965e21f8dfd6e2c0b1772d14 (MD5) Previous issue date: 1962
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Upper Ordovician and lowest Silurian graptolite biostratigraphy in southern Scotland
Abstract available p. [ix]-[xi]
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Structural geology of the southern Silurian hills, San Bernardino County, Calif
In the southern part of the Silurian Hills, seven lithologic units are delineated. They are an earlier Precambrian gneiss complex, the later Precambrian Pahrump Group, a Precambrian (?) metasedimentary complex, a Precambrian (?) metadioritic and metasedimentary complex, the Riggs Formation, basic …
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Depositional environments and diagenesis, Interlake Formation (Silurian), Williston Basin, North Dakota
<p> The Interlake Formation is a succession of Silurian carbonates of large areal extent found in the Williston Basin. The Interlake attains a maximum thickness of about 1,100 feet in western North Dakota and thins to an erosional edge in eastern North Dakota, </p><p> The main purpose of this study …
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Petrography of Algal Bioherms in the Burnt Bluff Group (Silurian), Wisconsin
Made available in DSpace on 2014-12-04T19:14:23Z (GMT). No. of bitstreams: 1 6303341.pdf: 3938304 bytes, checksum: 063e9346647a83f1a2df15547ae2817e (MD5) Previous issue date: 1962
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Late Silurian and Early Devonian fossil plants of Bathurst Island, arctic Canada
… pyrite permineralizations in rocks of Late Silurian and Early Devonian age. Specimens of some taxa are numerous and, sometimes, almost complete, allowing analysis of intraspecific variability, developmental patterns and reconstruction of the whole plant. The majority of plant fossils are …
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Understanding the theatre of terrestrialization: Silurian-Devonian sedimentary landscapes and continental ecosystems
… with the Euramerican data shows that trends of Silurian-Devonian timing and in the ichnodiversity of the colonization event were globally similar. The greatest ichnodiversity occurs in marine-influenced terrestrial strata, whereas arid continental strata record lower diversity ichnoassemblages. …
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Constructing a High-Resolution Record of Silurian Paleoclimate Using Carbonate Oxygen Isotopes
… can preserve a primary isotopic signal of Silurian temperatures, as well as generate a high-resolution climate record of the Silurian Period that correlates climate fluctuations with δ¹³C events. We then present Δ47-derived temperatures from clumped stable isotope analysis from four …
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Silurian Conodonts from the Wills Mountain Anticline, Virginia, West Virginia, and Maryland
Condodont biostratigraphy has been established for complete sections of the Mifflintown, Wills Creek, and Tonoloway formations along the Wills Mountain anticline in the Central Appalachians. Beds in the Central Appalachians formerly called the Rochester Formation have been renamed the Cosner Gap …
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Structural setting and petrogenesis of Silurian granites in the Caledonides of northern Scotland
nappes, the Moine and Naver nappes, contain a series of granitic plutons. The Rogart, Strath Halladale and Helmsdale granites have been studied using field and microstructural fabric analysis. Their emplacement mechanisms and pre, syn or post-tectonic status with respect to phases of Caledonian …
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Stratigraphy and conodont paleontology of late Silurian-early Devonian strata of western Virginia
Biostratigraphic study of the Late Silurian-Early Devonian strata of western Virginia reveals the presence of at least three potentially useful multielement conodont apparatuses. Two multielement species of the genus Ozarkodina may prove to be useful in determining the boundary between the Silurian …
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