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Cowlitz Formation
The Cowlitz Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period Findings The Cowlitz Formation holds fossils dating back to the Paleogene period. These fossils were discovered in 1911 through the work of Charles E. Weaver, Charles R. Fettkc, Donald Ross, T. A. Bonser, and Olaf Stromme in their task to study more closely the Tertiary Paleontology of Western Washington. Along with the Cowlitz Formation, they also closely observed the Tejon Formation. These two formations are a part of a greater Eocene of Western Washington. The basaltic lavas and tuffs occurring within the Eocene of western Washington have a thickness ranging from fifteen hundred to two thousand feet. The Cowlitz Formation is located in the canyon of Olequa Creek between towns of Winlock and Olequa, in southwestern Lewis Co., and northwestern Cowlitz Co., WA. The rocks composing this formation are sandstones, shales, conglomerates and subordina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by Abraham Gottlob W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winlock, Washington
Winlock () is a city in Lewis County, Washington, United States. The population was 1,472 at the 2020 census. It was named after territorial army general, Winlock M. Miller, who briefly resided there. Winlock is mostly famous for having the World's Largest Egg, reflecting its former status as a major producer of eggs. Early in its history, Winlock attracted many immigrants from Finland, Germany, and Sweden. History Origin Winlock began as a Northern Pacific Railroad construction camp called Wheeler's Camp in c. 1871. The railroad was then in the process of extending its line from Kalama to Tacoma, Washington. Dr. C. C. Pagett, an early resident, donated the land for the townsite. In 1873, he named it for General William Winlock Miller of Olympia, a man of some renown in the area. Miller had promised to give a school bell to the town if it were to be named after him. The town was incorporated in 1883. Early economy Lumbering was the initial economic driver. A number of sawmi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleogene Geology Of Oregon
The Paleogene ( ; also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago ( Mya) to the beginning of the Neogene Period Mya. It is the beginning of the Cenozoic Era of the present Phanerozoic Eon. The earlier term Tertiary Period was used to define the span of time now covered by the Paleogene Period and subsequent Neogene Period; despite no longer being recognised as a formal stratigraphic term, 'Tertiary' is still widely found in earth science literature and remains in informal use. Paleogene is often abbreviated "Pg" (but the United States Geological Survey uses the abbreviation PE for the Paleogene on the Survey's geologic maps). During the Paleogene, mammals diversified from relatively small, simple forms into a large group of diverse animals in the wake of the Cretaceous–Paleogene extinction event that ended the preceding Cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontology In Washington (state)
Paleontology in Washington encompasses Paleontology, paleontological research occurring within or conducted by people from the United States, U.S. state of Washington (state), Washington. Washington has a rich fossil Fossil record, record spanning almost the entire Geologic time scale, geologic column. Its fossil record shows an unusually great diversity of preservational types including carbonization, petrifaction, permineralization, Molding (process), molds, and Fossil#Casts and molds, cast. Early Paleozoic Washington would come to be home to creatures like Archaeocyatha, archaeocyathids, brachiopods, bryozoans, cephalopods, corals, and trilobites. While some Mesozoic fossils are known, few dinosaur remains have been found in the state. Only about two-thirds of the state's land mass had come together by the time the Mesozoic ended. In the Cenozoic the state's sea began to withdraw towards the west, while local Ecoregion#Terrestrial, terrestrial environments were home to a rich vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize ... Stratigraphy of Washington (state) Washington (state) geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachiopod
Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, while the front can be opened for feeding or closed for protection. Two major categories are traditionally recognized, articulate and inarticulate brachiopods. The word "articulate" is used to describe the tooth-and-groove structures of the valve-hinge which is present in the articulate group, and absent from the inarticulate group. This is the leading diagnostic skeletal feature, by which the two main groups can be readily distinguished as fossils. Articulate brachiopods have toothed hinges and simple, vertically-oriented opening and closing muscles. Conversely, inarticulate brachiopods have weak, untoothed hinges and a more complex system of vertical and oblique (diagonal) muscles used to keep the two valves aligned. In many brachiopods, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropoda
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna
Fauna is all of the animal life present in a particular region or time. The corresponding term for plants is ''flora'', and for fungi, it is '' funga''. Flora, fauna, funga and other forms of life are collectively referred to as ''biota''. Zoologists and paleontologists use ''fauna'' to refer to a typical collection of animals found in a specific time or place, e.g. the " Sonoran Desert fauna" or the " Burgess Shale fauna". Paleontologists sometimes refer to a sequence of faunal stages, which is a series of rocks all containing similar fossils. The study of animals of a particular region is called faunistics. Etymology '' Fauna'' comes from the name Fauna, a Roman goddess of earth and fertility, the Roman god Faunus, and the related forest spirits called Fauns. All three words are cognates of the name of the Greek god Pan, and ''panis'' is the Greek equivalent of fauna. ''Fauna'' is also the word for a book that catalogues the animals in such a manner. The term was fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cowlitz County, Washington
Cowlitz County is a county located in the U.S. state of Washington. As of the 2020 census, its population was 110,730. The county seat is Kelso, and its largest city is Longview. The county was formed in April 1854. Its name derives from the anglicized version of the Cowlitz Indian term ''Cow-e-liske'', meaning either 'river of shifting sands' or 'capturing the medicine spirit.' Cowlitz comprises the Longview, WA Metropolitan statistical area, which is also included in the Portland-Vancouver-Salem, OR-WA Combined statistical area. History Prior to the Europeans' arrival to the area, it was inhabited by numerous Native American tribes, with the Cowlitz tribe being the largest. They were drawn to the region by the abundance of salmon. The Cowlitz are considered to be the first regional inhabitants to engage in commerce as they traded extensively with other tribes in Western and Eastern Washington. The Cowlitz Indian population declined significantly from the 1829-1830 small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olequa, Washington
Olequa, also known as Olequah, is an unincorporated community in Cowlitz County, Washington. Olequa is located north of the city of Castle Rock on the west bank of the Cowlitz River. Olequa is accessed by traveling north on West Side Highway from Castle Rock. The Olequa community is part of the Castle Rock School District, a K-12 K-1 is a professional kickboxing promotion established in 1993, well known worldwide mainly for its heavyweight division fights and Grand Prix tournaments. In January 2012, K-1 Global Holdings Limited, a company registered in Hong Kong, acquir ... school district of about 1,300 students. A post office called Olequa was established in 1875, and remained in operation until 1912. Olequa is a name derived from an Indian language. Geography Olequa is located at (46.37524765, -122.9403952). External linksCastle Rock School District website References Unincorporated communities in Cowlitz County, Washington Unincorporated communities in Washi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tejon Formation
The Tejon Formation is a Paleogene period geologic formation in California. Geology The formation regionally overlies the Martinez Formation or the Chico Formation. Google Books: "The stratigraphic and faunal relations of the Martinez formation to the Chico and Tejon of Southern California" Clarence A. Waring; Stanford University Dept. of Geology; Jun 4, 2011 . accessed 1.16.2016. Paleontology in the Tejon Formation indicates a more tropical climate than during the Martinez Formation's period, with fauna that flourished in its conditions. ...
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