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List Of Fossiliferous Stratigraphic Units In Washington (state)
This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) Washington Stratigraphic units A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, p ... Stratigraphy of Washington (state) Washington (state) geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratigraphic Units
A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, paleontologic features (facies) that characterize it. Units must be ''mappable'' and ''distinct'' from one another, but the contact need not be particularly distinct. For instance, a unit may be defined by terms such as "when the sandstone component exceeds 75%". Lithostratigraphic units Sequences of sedimentary rock, sedimentary and volcanic rocks are subdivided the basis of their shared or associated lithology. Formally identified lithostratigraphic units are structured in a hierarchy of lithostratigraphic rank, higher rank units generally comprising two or more units of lower rank. Going from smaller to larger in rank, the main lithostratigraphic ranks are Bed, Member, Formation, Group and Supergroup. Formal names of lithostratigraph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincoln Creek Formation
The Lincoln Creek Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period. See also * List of fossiliferous stratigraphic units in Washington (state) This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) ... * Paleontology in Washington (state) References * Paleogene geology of Washington (state) {{Paleogene-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puget Formation
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Puget may refer to: * Puget (surname) * Puget, Vaucluse, a commune in France * Puget, Washington, a community in the United States See also * Puget Creek * Puget Island *Puget Sound *Puget-Ville Puget-Ville (; oc, Puget Vila) is a commune in the Var department in the Provence-Alpes-Côte d'Azur region in southeastern France. Administration Max Bastide was elected in 2001 and re-elected in 2008. In 2014, Catherine Altare was elected. Sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porter Shale Formation
The Porter Shale is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period. See also * List of fossiliferous stratigraphic units in Washington (state) This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) ... * Paleontology in Washington (state) References * Paleogene geology of Washington (state) {{Paleogene-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambrian
The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million years ago (mya) to the beginning of the Ordovician Period mya. Its subdivisions, and its base, are somewhat in flux. The period was established as "Cambrian series" by Adam Sedgwick, who named it after Cambria, the Latin name for 'Cymru' (Wales), where Britain's Cambrian rocks are best exposed. Sedgwick identified the layer as part of his task, along with Roderick Murchison, to subdivide the large "Transition Series", although the two geologists disagreed for a while on the appropriate categorization. The Cambrian is unique in its unusually high proportion of sedimentary deposits, sites of exceptional preservation where "soft" parts of organisms are preserved as well as their more resistant shells. As a result, our understanding of the Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Dominion Limestone Formation
The Old Dominion Limestone is a geologic formation in Washington (state). It preserves fossils dating back to the Cambrian period. See also * List of fossiliferous stratigraphic units in Washington (state) This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) ... * Paleontology in Washington (state) References * Cambrian geology of Washington (state) Cambrian southern paleotropical deposits {{Cambrian-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurian
The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozoic Era. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out. One important event in this period was the initial establishment of terrestrial life in what is known as the Silurian-Devonian Terrestrial Revolution: vascular plants emerged from more primitive land plants, dikaryan fungi started expanding and diversifying along with glomeromycotan fungi, and three groups of arthropods (myriapods, arachnids and hexapods) became fully terrestrialized. A significant evolutionary milestone during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Offley Island Formation
The Offley Island Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Silurian period. See also * List of fossiliferous stratigraphic units in Washington (state) This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) ... * Paleontology in Washington (state) References * Silurian geology of Washington (state) Silurian northern paleotropical deposits {{Silurian-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nooksack Formation
The Nooksack Formation is a geologic formation in Washington. It preserves fossils dating back to the Cretaceous period. See also * List of fossiliferous stratigraphic units in Washington (state) This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) ... * Paleontology in Washington (state) References * Cretaceous geology of Washington (state) {{Cretaceous-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanaimo Formation
The Nanaimo Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Cretaceous period. See also * List of fossiliferous stratigraphic units in Washington (state) This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) ... * Paleontology in Washington (state) References * Cretaceous geology of Washington (state) {{Cretaceous-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montesano Formation
The Montesano Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Neogene period. See also * List of fossiliferous stratigraphic units in Washington (state) This article contains a list of fossil-bearing stratigraphic units in the state of Washington, U.S. Sites See also * Paleontology in Washington (state) References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Washington (state) ... * Paleontology in Washington (state) References * Neogene geology of Washington (state) {{Neogene-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian
The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the region of Perm in Russia. The Permian witnessed the diversification of the two groups of amniotes, the synapsids and the sauropsids ( reptiles). The world at the time was dominated by the supercontinent Pangaea, which had formed due to the collision of Euramerica and Gondwana during the Carboniferous. Pangaea was surrounded by the superocean Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these drier conditions, rose to dominance in place of their am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
