| White Tail Ridge Formation Stratigraphic range: Paleogene | |
|---|---|
| Type | Formation |
| Location | |
| Region | Douglas County, Oregon |
| Country |  United States |
The White Tail Ridge Formation is a geologic formation in Oregon. It preserves fossils dating back to the Paleogene period.
The Columbia Plateau is a geologic and geographic region that lies across parts of the U.S. states of Washington, Oregon, and Idaho. It is a wide flood basalt plateau between the Cascade Range and the Rocky Mountains, cut through by the Columbia River.
John Day Fossil Beds National Monument is a U.S. national monument in Wheeler and Grant counties in east-central Oregon. Located within the John Day River basin and managed by the National Park Service, the park is known for its well-preserved layers of fossil plants and mammals that lived in the region between the late Eocene, about 45 million years ago, and the late Miocene, about 5 million years ago. The monument consists of three geographically separate units: Sheep Rock, Painted Hills, and Clarno.
The Oregon Dunes National Recreation Area is located on the Oregon Coast, stretching approximately 40 miles (64 km) north of the Coos River in North Bend to the Siuslaw River in Florence, and adjoining Honeyman State Park on the west. It is part of Siuslaw National Forest and is administered by the United States Forest Service.
The Oregon Air National Guard is the aerial militia of the State of Oregon, United States of America. It is, along with the Oregon Army National Guard, an element of the Oregon National Guard.
Powell Butte is an extinct cinder cone butte in Portland, Oregon, United States. It is part of the Boring Lava Field, which includes more than 80 small volcanic edifices and lava flows in the Portland–Vancouver metropolitan area. The region around Powell Butte has a cool climate, and the butte and its surroundings feature meadows, rivers, and mixed forests. Powell Butte hosts the Powell Butte Nature Park, which includes about 612 acres (2.48 km2) of trails for biking, hiking, and horseback riding.
Oswald West State Park is part of the state park system of the U.S. state of Oregon. It is located about 10 miles (16 km) south of the city of Cannon Beach, adjacent to Arch Cape, on the Pacific Ocean. The park covers 2,448 acres (9.91 km2), with many miles of hiking trails both inside the park grounds and linking to other parks and landmarks beyond.
The Secretary of State of Oregon, an elected constitutional officer within the executive branch of government of the U.S. state of Oregon, is first in line of succession to the Governor. The duties of office are: auditor of public accounts, chief elections officer, and administrator of public records. Additionally, the Secretary of State serves on the Oregon State Land Board and chairs the Oregon Sustainability Board. Following every United States Census, if the Oregon Legislative Assembly cannot come to agreement over changes to legislative redistricting, the duty falls to the Secretary of State.
The Provisional Government of Oregon was a popularly elected settler government created in the Oregon Country, in the Pacific Northwest region of North America. Its formation had been advanced at the Champoeg Meetings since February 17, 1841, and it existed from May 2, 1843 until March 3, 1849, and provided a legal system and a common defense amongst the mostly American pioneers settling an area then inhabited only by the many Indigenous Nations. Much of the region's geography and many of the Natives were not known by people of European descent until several exploratory tours were authorized at the turn of the 18th and 19th centuries. The Organic Laws of Oregon were adopted in 1843 with its preamble stating that settlers only agreed to the laws "until such time as the United States of America extend their jurisdiction over us." According to a message from the government in 1844, the rising settler population was beginning to flourish among the "savages", who were "the chief obstruction to the entrance of civilization" in a land of "ignorance and idolatry."
Fort Rock Cave was the site of the earliest evidence of human habitation in the US state of Oregon before the excavation of Paisley Caves. Fort Rock Cave featured numerous well-preserved sagebrush sandals, ranging from 9,000 to 13,000 years old. The cave is located approximately 1.5 miles (2.4 km) west of Fort Rock near Fort Rock State Natural Area in Lake County. Fort Rock Cave was declared a National Historic Landmark in 1961, and added to the National Register of Historic Places in 1966.
The Oregon Coast Range, often called simply the Coast Range and sometimes the Pacific Coast Range, is a mountain range, in the Pacific Coast Ranges physiographic region, in the U.S. state of Oregon along the Pacific Ocean. This north-south running range extends over 200 miles (320 km) from the Columbia River in the north on the border of Oregon and Washington, south to the middle fork of the Coquille River. It is 30 to 60 miles wide and averages around 1,500 feet (460 m) in elevation above sea level. The coast range has three main sections, a Northern, Central, and Southern.
The Tryon Creek State Natural Area is a state park located primarily in Portland, in the U.S. state of Oregon. It is the only Oregon state park within a major metropolitan area. The 645-acre (261 ha) park lies between Boones Ferry Road and Terwilliger Boulevard in southwest Portland in Multnomah County and northern Lake Oswego in Clackamas County and is bisected from north to south by Tryon Creek.
The Organic Laws of Oregon were two sets of legislation passed in the 1840s by a group of primarily American settlers based in the Willamette Valley. These laws were drafted after the Champoeg Meetings and created the structure of a government in the Oregon Country. At the last Champoeg Meeting in May 1843, the majority voted to create what became the Provisional Government of Oregon. Laws were drafted by the committee and accepted by a popular vote in July. These laws were reformed by a second version in 1845.
Scapanus is a genus of moles in the family Talpidae. They live in North America from west of the Rockies south to Baja California del Norte, and north to British Columbia, wherever conditions permit a mole population; that is to say, apart from the most sandy, rocky, or developed places. As they are one genus, they are very closely related, but as species, they rarely if ever interbreed successfully.
Water-penny beetles are a family of 272 species of aquatic beetles found on all continents except Antarctica, in both tropical and temperate areas. The young, which live in water, resemble tiny pennies. The larvae feed – usually nocturnally – on algae on rock surfaces. The presence of water-penny larvae in a stream can be used as a test for the quality of the water, as they are pollution-sensitive. They cannot live in habitats where rocks acquire a thick layer of algae, fungi, or inorganic sediment. Therefore, their presence along with other diverse phyla signifies good-quality water. They are around 6 to 10 millimeters in length.
Hat Rock State Park is a state park in the U.S. state of Oregon, administered by the Oregon Parks and Recreation Department. The park is located off the east side of U.S. Highway 730 in Hermiston, on the south shore of Lake Wallula behind McNary Dam on the Columbia River.
Oregon is a state in the Pacific Northwest region of the United States. The Columbia River delineates much of Oregon's northern boundary with Washington, while the Snake River delineates much of its eastern boundary with Idaho. The 42° north parallel delineates the southern boundary with California and Nevada.
Paleontology in Oregon refers to paleontological research occurring within or conducted by people from the U.S. state of Oregon. Oregon's geologic record extends back approximately 400 million years ago to the Devonian period, before which time the state's landmass was likely submerged under water. Sediment records show that Oregon remained mostly submerged until the Paleocene period. The state's earliest fossil record includes plants, corals, and conodonts. Oregon was covered by seaways and volcanic islands during the Mesozoic era. Fossils from this period include marine plants, invertebrates, ichthyosaurs, pterosaurs, and traces such as invertebrate burrows. During the Cenozoic, Oregon's climate gradually cooled and eventually yielded the environments now found in the state. The era's fossils include marine and terrestrial plants, invertebrates, fish, amphibians, turtles, birds, mammals, and traces such as eggs and animal tracks.
Pteronarctos is a genus of basal pinnipediform from middle Miocene marine deposits in Oregon.
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