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Leech River Fault
The Leech River Fault extends across the southern tip of Vancouver Island in British Columbia, Canada, creating the distinctively straight, narrow, and steep-sided valley, occupied by Loss Creek and two reservoirs, that runs from Sombrio Point (southeast of Port Renfrew and Sombrio Beach) due east to the Leech River, and then turns southeast to run past Victoria. It is a thrust fault that marks the northernmost exposure of the Crescent Terrane (part of Siletzia), where basalt of the Metchosin Igneous Complex (correlative with the Crescent Formation on the Olympic Peninsula) is dragged under Vancouver Island by the subducting Juan de Fuca Plate. About ten kilometers north the nearly parallel ''San Juan Fault'' marks the southern limit of rock of the Wrangellia terrane, which underlies most of Vancouver Island. Between these two northeast-dipping thrust faults are the ''Leech River Complex'' and (near Port Renfrew, but also outcrops near Victoria) the ''Pandora Peak Unit''. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leech River Fault
The Leech River Fault extends across the southern tip of Vancouver Island in British Columbia, Canada, creating the distinctively straight, narrow, and steep-sided valley, occupied by Loss Creek and two reservoirs, that runs from Sombrio Point (southeast of Port Renfrew and Sombrio Beach) due east to the Leech River, and then turns southeast to run past Victoria. It is a thrust fault that marks the northernmost exposure of the Crescent Terrane (part of Siletzia), where basalt of the Metchosin Igneous Complex (correlative with the Crescent Formation on the Olympic Peninsula) is dragged under Vancouver Island by the subducting Juan de Fuca Plate. About ten kilometers north the nearly parallel ''San Juan Fault'' marks the southern limit of rock of the Wrangellia terrane, which underlies most of Vancouver Island. Between these two northeast-dipping thrust faults are the ''Leech River Complex'' and (near Port Renfrew, but also outcrops near Victoria) the ''Pandora Peak Unit''. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Flattery
Cape Flattery () is the northwesternmost point of the contiguous United States. It is in Clallam County, Washington on the Olympic Peninsula, where the Strait of Juan de Fuca joins the Pacific Ocean. It is also part of the Makah Reservation, and is the northern boundary of the Olympic Coast National Marine Sanctuary. Cape Flattery can be reached from a short hike, most of which is boardwalked. Cape Flattery Trail, with photographs. The westernmost point in the contiguous United States is at Cape Alava, south of Cape Flattery in Olympic National Park. However, the westernmost tip of Cape Flattery is almost exactly as far west as Cape Alava, the difference being approximately 5 seconds of longitude, about , at high tide and somewhat more at low tide. The Cape Flattery Lighthouse is on Tatoosh Island, just off the cape. Makah Bay and Neah Bay are on either side of the cape. Neah Bay, Washington is the closest town to the cape. History James Cook Cape Flattery is the oldest perm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehnite
Prehnite is an inosilicate of calcium and aluminium with the formula: Ca2Al(AlSi3O10)(OH)2. Limited Fe3+ substitutes for aluminium in the structure. Prehnite crystallizes in the orthorhombic crystal system, and most often forms as stalactitic or botryoidal aggregates, with only just the crests of small crystals showing any faces, which are almost always curved or composite. Very rarely will it form distinct, well-individualized crystals showing a square-like cross-section, including those found at the Jeffrey Mine in Asbestos, Quebec, Canada. Prehnite is brittle with an uneven fracture and a vitreous to pearly luster. Its hardness is 6-6.5, its specific gravity is 2.80-2.90 and its color varies from light green to yellow, but also colorless, blue, pink or white. In April 2000, rare orange prehnite was discovered in the Kalahari Manganese Fields, South Africa. Prehnite is mostly translucent, and rarely transparent. Though not a zeolite, prehnite is found associated with minerals suc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dip-slip
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seattle
Seattle ( ) is a seaport city on the West Coast of the United States. It is the seat of King County, Washington. With a 2020 population of 737,015, it is the largest city in both the state of Washington and the Pacific Northwest region of North America. The Seattle metropolitan area's population is 4.02 million, making it the 15th-largest in the United States. Its growth rate of 21.1% between 2010 and 2020 makes it one of the nation's fastest-growing large cities. Seattle is situated on an isthmus between Puget Sound (an inlet of the Pacific Ocean) and Lake Washington. It is the northernmost major city in the United States, located about south of the Canadian border. A major gateway for trade with East Asia, Seattle is the fourth-largest port in North America in terms of container handling . The Seattle area was inhabited by Native Americans for at least 4,000 years before the first permanent European settlers. Arthur A. Denny and his group of travelers, subsequ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whidbey Island
Whidbey Island (historical spellings Whidby, Whitbey, or Whitby) is the largest of the islands composing Island County, Washington, in the United States, and the largest island in Washington State. (The other large island is Camano Island, east of Whidbey.) Whidbey is about north of Seattle, and lies between the Olympic Peninsula and the I-5 corridor of western Washington. The island forms the northern boundary of Puget Sound. It is home to Naval Air Station Whidbey Island. The state parks and natural forests are home to numerous old growth trees. According to the United States Census, 2000, 2000 census, Whidbey Island was home to 67,000 residents with an estimated 29,000 of those living in rural locations. This increased slightly to 69,480 residents as of the 2010 United States Census, 2010 census. Whidbey Island is approximately from north to south, and wide, with a total land area of , making it the List of islands of the United States by area, 40th largest island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continental Margin
A continental margin is the outer edge of continental crust abutting oceanic crust under coastal waters. It is one of the three major zones of the ocean floor, the other two being deep-ocean basins and mid-ocean ridges. The continental margin consists of three different features: the continental rise, the continental slope, and the continental shelf. The continental shelf is the relatively shallow water area found in proximity to continents. Continental margins constitute about 28% of the oceanic area. Zones of the continental margin The continental shelf is the portion of the continental margin that transitions from the shore out towards to ocean. Continental shelves are believed to make up 7% of the sea floor. The width of continental shelves worldwide varies in the range of 0.03–1500 km. The continental shelf is generally flat, and ends at the shelf break, where there is a drastic increase in slope angle: The mean angle of continental shelves worldwide is 0° 07′, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puget Sound
Puget Sound ( ) is a sound of the Pacific Northwest, an inlet of the Pacific Ocean, and part of the Salish Sea. It is located along the northwestern coast of the U.S. state of Washington. It is a complex estuarine system of interconnected marine waterways and basins, with one major and two minor connections to the open Pacific Ocean via the Strait of Juan de Fuca—Admiralty Inlet being the major connection and Deception Pass and Swinomish Channel being the minor. Water flow through Deception Pass is approximately equal to 2% of the total tidal exchange between Puget Sound and the Strait of Juan de Fuca. Puget Sound extends approximately from Deception Pass in the north to Olympia in the south. Its average depth is and its maximum depth, off Jefferson Point between Indianola and Kingston, is . The depth of the main basin, between the southern tip of Whidbey Island and Tacoma, is approximately . In 2009, the term Salish Sea was established by the United States Board o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Townsend, Washington
Port Townsend is a city on the Quimper Peninsula in Jefferson County, Washington, United States. The population was 10,148 at the 2020 United States Census. It is the county seat and only incorporated city of Jefferson County. In addition to its natural scenery at the northeast tip of the Olympic Peninsula, the city is known for the many Victorian buildings remaining from its late 19th-century heyday, numerous annual cultural events, and as a maritime center for independent boatbuilders and related industries and crafts. The Port Townsend Historic District is a U.S. National Historic Landmark District. It is also significantly drier than the surrounding region due to being in the rainshadow of the Olympic Mountains, receiving only of rain per year. History The bay was originally named "Port Townshend" by Captain George Vancouver in 1792, for his friend the Marquis of Townshend. It was immediately recognized as a good safe harbor, although strong south winds and poor holdin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discovery Bay, Washington
Discovery Bay is a small bay connected to the Strait of Juan de Fuca on the Olympic Peninsula in Washington (state), Washington state; it was also historically called Port Discovery, Washington, Port Discovery. An unincorporated area, unincorporated community also named Discovery Bay lies in Jefferson County, Washington, Jefferson County at the southern end of the bay. The bay was named by George Vancouver after the ''Discovery'', a ship used in his 1792 expedition of the area. The community at the foot of the bay eventually assumed the same name. Geography Discovery Bay is located at the northeastern edge of the Olympic Peninsula of Washington state. The bay enters the Strait of Juan de Fuca between the Miller Peninsula, Miller and Quimper Peninsula, Quimper peninsulas. The bay's mouth is just south of Protection Island (Washington), Protection Island, a small federally protected nature preserve. Discovery Bay is in length, and wide at its mouth. Its primary inlet is Snow C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juan De Fuca Strait
The Strait of Juan de Fuca (officially named Juan de Fuca Strait in Canada) is a body of water about long that is the Salish Sea's outlet to the Pacific Ocean. The international boundary between Canada and the United States runs down the centre of the Strait. It was named in 1787 by the maritime fur trader Charles William Barkley, captain of ''Imperial Eagle'', for Juan de Fuca, the Greek navigator who sailed in a Spanish expedition in 1592 to seek the fabled Strait of Anián. Barkley was the first non-indigenous person to find the strait, unless Juan de Fuca's story was true. The strait was explored in detail between 1789 and 1791 by Manuel Quimper, José María Narváez, Juan Carrasco, Gonzalo López de Haro, and Francisco de Eliza. Definition The United States Geological Survey defines the Strait of Juan de Fuca as a channel. It extends east from the Pacific Ocean between Vancouver Island, British Columbia, and the Olympic Peninsula, Washington, to Haro Strait, San Juan Chan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goldstream River (Vancouver Island)
The Goldstream River ( Saanich: sʔə́ləq̕ʷtəɬ) is a river northwest of Victoria on southern Vancouver Island, British Columbia, Canada . The river's name derives from a small gold rush in its basin during the 1860s, and was originally Gold Stream. Course The Goldstream River begins at the outlet of Butchart Lake, the first of three reservoirs along the upper reaches of the Goldstream which are within the Greater Victoria Watershed Area. Shortly after exiting Butchart Lake it flows into Lubbe Lake. Shortly after exiting Lubbe Lake the river enters the final and largest of the three lakes, Goldstream Lake. After exiting Goldstream Lake, the river flows southeast until it turns north and enters Goldstream Provincial Park. Just before entering the park, the river receives its first major tributary, Waugh Creek. About halfway through the park, the river tumbles over Goldstream Falls. After the falls it continues north, receiving its final major tributary, Niagara Creek, just ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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