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Castle Crags
Castle Crags is a dramatic and well-known rock formation in Northern California. Elevations range from along the Sacramento River near the base of the crags, to over at the summit of the tallest crag. Located just west of Interstate 5, between the towns of Castella and Dunsmuir, Castle Crags is today a popular tourist stop along the highway. Mount Shasta is 10 miles to the north. The formation and surrounding habitats are protected by Castle Crags State Park, located on both sides of Interstate 5 at them, and by Castle Crags Wilderness Area of the Shasta-Trinity National Forest. Geology Although the Northern Coast Ranges of northwestern California consist largely of rocks of volcanic and sedimentary origin, granite bodies (plutons) intruded many parts of the area during the Jurassic period. Heavy glaciation at this location during the Pleistocene eroded much of the softer surrounding rock leaving the towering crags and spires exposed, from which the Castle Crags pluto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Shasta
Mount Shasta ( Shasta: ''Waka-nunee-Tuki-wuki''; Karuk: ''Úytaahkoo'') is a potentially active volcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation of , it is the second-highest peak in the Cascades and the fifth-highest in the state. Mount Shasta has an estimated volume of , which makes it the most voluminous stratovolcano in the Cascade Volcanic Arc. The mountain and surrounding area are part of the Shasta–Trinity National Forest. Description Mount Shasta is connected to its satellite cone of Shastina, and together they dominate the landscape. Shasta rises abruptly to tower nearly above its surroundings. On a clear winter day, the mountain can be seen from the floor of the Central Valley to the south. The mountain has attracted the attention of poets, authors, and presidents. The mountain consists of four overlapping dormant volcanic cones that have built a complex shape, including the main summit and the prominent and visi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentary
Sedimentary rocks are types of rock (geology), rock that are formed by the accumulation or deposition of mineral or organic matter, organic particles at Earth#Surface, Earth's surface, followed by cementation (geology), cementation. Sedimentation is the collective name for processes that cause these particles to settle in place. The particles that form a sedimentary rock are called sediment, and may be composed of detritus (geology), geological detritus (minerals) or detritus, biological detritus (organic matter). The geological detritus originated from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or Mass wasting, mass movement, which are called agents of denudation. Biological detritus was formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modoc People
The Modoc are a Native American people who originally lived in the area which is now northeastern California and central Southern Oregon. They are currently divided between Oregon and Oklahoma and are enrolled in either of two federally recognized tribes, the Klamath Tribes in Oregon and the Modoc Tribe of Oklahoma, now known as the Modoc Nation. Language The Modoc, like the neighboring Klamath, spoke dialectic varieties of the Klamathan/Lutuamian language, a branch of the Plateau Penutian language family. Both peoples called themselves ''maklaks'', meaning "people". To distinguish between the tribes, the Modoc called themselves ''Moatokni maklaks'', from ''muat'' meaning "South". The Achomawi, a band of the Pit River tribe, called them ''Lutuami'', meaning "Lake Dwellers". Current population and geography About 600 Modoc live in Klamath County, Oregon, in and around their ancestral homelands. This group includes those who stayed on the reservation during the Modoc War, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achomawi People
Achomawi (also Achumawi, Ajumawi and Ahjumawi), are the northerly nine (out of eleven) bands of the Pit River tribe of Palaihnihan Native Americans who live in what is now northeastern California in the United States. These 5 autonomous bands (also called "tribelets") of the Pit River Indians historically spoke slightly different dialects of one common language, and the other two bands spoke dialects of a related language, called Atsugewi. The name "Achomawi" means river people and properly applies to the band which historically inhabited the Fall River Valley and the Pit River from the south end of Big Valley Mountains, westerly to Pit River Falls. The nine bands of Achumawi lived on both sides of the Pit River from its origin at Goose Lake to Montgomery Creek, and the two bands of Atsugewi lived south of the Pit River on creeks tributary to it in the Hat Creek valley and Dixie Valley. Population Achomawi speaking territories reached from Big Bend to Goose Lake. This land ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wintu People
The Wintu (also Northern Wintun) are Native Americans who live in what is now Northern California. They are part of a loose association of peoples known collectively as the Wintun (or Wintuan). Others are the Nomlaki and the Patwin. The Wintu language is part of the Penutian language family. Historically, the Wintu lived primarily on the western side of the northern part of the Sacramento Valley, from the Sacramento River to the Coast Range. The range of the Wintu also included the southern portions of the Upper Sacramento River (south of the Salt Creek drainage), the southern portion of the McCloud River, and the upper Trinity River. They also lived in the vicinity of present-day Chico, on the west side of the river extending to the Coast Ranges. Today most Wintus live on reservations and rancherias in Colusa, Glenn, Yolo, Mendocino, and Shasta counties. History The first recorded encounter between Wintu and Euro-Americans dates from the 1826 expedition of J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the economic viability of investing in the equipment, labor, and energy required to extract, refine and transport the materials found at the mine to manufacturers who can use the material. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joaquin Miller
Cincinnatus Heine Miller (; September 8, 1837 – February 17, 1913), better known by his pen name Joaquin Miller (), was an American poet, author, and frontiersman. He is nicknamed the "Poet of the Sierras" after the Sierra Nevada, about which he wrote in his ''Songs of the Sierras'' (1871). Life Early years and family Joaquin Miller's parents were Hulings Miller and Margaret (née Witt), who married January 3, 1836, in Union County, Indiana. Their second son, Cincinnatus Hiner Miller, was born in 1837 near Union County, Indiana. For unknown reasons, Miller later claimed his birth date was November 10, 1841. He said he was born in Millersville, Indiana, a town he claimed was founded by his father, while on a wagon heading west.Hapke, Laura. ''Girls Who Went Wrong: Prostitutes in American Fiction, 1885-1917. Popular Press, 1989: 21. After leaving Union County, Miller's father then moved the family to Grant County, Indiana to a location near the Mississinewa River and near the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Gold Rush
The California Gold Rush (1848–1855) was a gold rush that began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California. The news of gold brought approximately 300,000 people to California from the rest of the United States and abroad. The sudden influx of gold into the money supply reinvigorated the American economy; the sudden population increase allowed California to go rapidly to statehood, in the Compromise of 1850. The Gold Rush had severe effects on Native Californians and accelerated the Native American population's decline from disease, starvation and the California genocide. The effects of the Gold Rush were substantial. Whole indigenous societies were attacked and pushed off their lands by the gold-seekers, called "forty-niners" (referring to 1849, the peak year for Gold Rush immigration). Outside of California, the first to arrive were from Oregon, the Sandwich Islands (Hawaii) and Latin America in late 1848. Of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siskiyou Trail
The Siskiyou Trail stretched from California's Central Valley to Oregon's Willamette Valley; modern-day Interstate 5 follows this pioneer path. Originally based on existing Native American foot trails winding their way through river valleys, the Siskiyou Trail provided the shortest practical travel path between early settlements in California and Oregon. Development The earliest European or European-American visitors along the Siskiyou Trail were likely hunters and trappers connected with the Hudson's Bay Company (HBC) who, in the 1820s, began to travel the rivers of Southern Oregon and Northern California in search of fur and pelts. The HBC had established itself on the Columbia River, and built Fort Vancouver, its regional headquarters in 1824. HBC parties began to explore south toward California in 1825. Alexander McLeod led exploration and trapping parties south beginning in 1826, reaching the Klamath River in 1827, and the Sacramento River in 1828. In 1829 he led the firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exfoliation (geology)
Exfoliation joints or sheet joints are surface-parallel fracture systems in rock, and often leading to erosion of concentric slabs. ''(See Joint (geology)).'' General characteristics of exfoliation joints * Commonly follow topography. * Divide the rock into sub-planar slabs. * Joint spacing increases with depth from a few centimeters near the surface to a few meters * Maximum depth of observed occurrence is around 100 meters. * Deeper joints have a larger radius of curvature, which tends to round the corners of the landscape as material is eroded * Fracture mode is tensile * Occur in many different lithologies and climate zones, not unique to glaciated landscapes. * Host rock is generally sparsely jointed, fairly isotropic, and has high compressive strength. * Can have concave and convex upwards curvatures. * Often associated with secondary compressive forms such as arching, buckling, and A-tents (buckled slabs) Formation of exfoliation joints Despite their common occurrenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cliff
In geography and geology, a cliff is an area of rock which has a general angle defined by the vertical, or nearly vertical. Cliffs are formed by the processes of weathering and erosion, with the effect of gravity. Cliffs are common on coasts, in mountainous areas, escarpments and along rivers. Cliffs are usually composed of rock that is resistant to weathering and erosion. The sedimentary rocks that are most likely to form cliffs include sandstone, limestone, chalk, and dolomite. Igneous rocks such as granite and basalt also often form cliffs. An escarpment (or scarp) is a type of cliff formed by the movement of a geologic fault, a landslide, or sometimes by rock slides or falling rocks which change the differential erosion of the rock layers. Most cliffs have some form of scree slope at their base. In arid areas or under high cliffs, they are generally exposed jumbles of fallen rock. In areas of higher moisture, a soil slope may obscure the talus. Many cliffs also fea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing Great American Interchang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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