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Yagi Ridge
Yagi Ridge is a mountain ridge extending northwest from the middle of the Spectrum Range at the southern end of the Mount Edziza volcanic complex in northwestern British Columbia, Canada. It is bounded on the north by Nagha Glacier and Nagha Creek valley, on the south by Yeda Creek on the Arctic Lake Plateau and on the west by Mess Creek valley. Yagi Ridge reaches an elevation of at the head of Nagha Glacier where its eastern end adjoins to the Spectrum Range just northwest of Yeda Peak. The ridge is at the southern end of Mount Edziza Provincial Park and is named after Kenzō Yagi, a Japanese volcanologist who traversed it with Canadian volcanologist Jack Souther during a visit to Canada in 1966. Yagi also means mountain goat in the Japanese language which exist in abundance around the ridge. Geology The base of Yagi Ridge is covered with glacial, talus and landslide deposits. The oldest rocks comprising the ridge are Miocene alkali basalt flows of the Raspberry For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Google Earth
Google Earth is a computer program that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satellite images, aerial photography, and geographic information system, GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and coordinates, or by using a Computer keyboard, keyboard or computer mouse, mouse. The program can also be downloaded on a smartphone or Tablet computer, tablet, using a touch screen or stylus to navigate. Users may use the program to add their own data using Keyhole Markup Language and upload them through various sources, such as forums or blogs. Google Earth is able to show various kinds of images overlaid on the surface of the earth and is also a Web Map Service client. In 2019, Google has revealed that Google Earth now covers more than 97 percent of the world, and has c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yeda Peak
Yeda Peak is a volcano and the highest peak of the Spectrum Range in the Boundary Ranges of northwestern British Columbia, Canada, located southwest of Tatogga and south of Kitsu Peak. It is believed Yeda Peak last erupted during the Pliocene period. See also * List of volcanoes in Canada * List of Northern Cordilleran volcanoes * List of mountains of Canada * Volcanism of Canada * Volcanism of Western Canada Volcanism of Western Canada has produced lava flows, lava plateaus, lava domes, cinder cones, stratovolcanoes, shield volcanoes, greenstone belts, submarine volcanoes, calderas, diatremes and maars, along with examples of more less common v ... External linksYeda Peakin the Canadian Mountain Encyclopedia * Mount Edziza volcanic complex Two-thousanders of British Columbia Pliocene volcanoes {{BritishColumbiaInterior-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pantellerite
Pantellerite is a type of volcanic rock, specifically a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite. It is named after Pantelleria, a volcanic island in the Strait of Sicily and the type location for this rock. On Pantelleria the rock is usually found as a vitrophyre containing phenocrysts of anorthoclase or sanidine. Quartz is found only in the most strongly peralkaline rocks. Mafic minerals may include aegirine, fayalite, aenigmatite, ilmenite, and sodic amphibole (often arfvedsonite or ferrorichterite). Occurrence ;North America *Ilgachuz Range, west-central British Columbia, Canada *La Reforma, Baja California Peninsula, Mexico *Level Mountain, northwestern British Columbia, Canada ;Antarctica *Mount Berlin, Marie Byrd Land *Mount Moulton, Marie Byrd Land * Mount Noice, Victoria Land ;Asia *Udokan Plateau, Russia ;Africa *Dabbahu Volcano, Afar Region, Ethiopia * Ma Alalta, Afar Region, Ethiopia *Tat Ali Tat Ali is a low H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comendite
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite. Phenocrysts are sodic sanidine with minor albite and bipyramidal quartz. Iddings, Joseph Paxson, 1913, ''Igneous rocks: composition, texture and classification'', v. 2, pp. 94-96 Comendite occurs in the mountains Tibrogargan, Coonowrin, Tunbubudla, Coochin, Saddleback, Tibberoowuccum and Ngungun in the Glass House Mountains, South East Queensland, Australia. The blue colour is caused by very small crystals of riebeckite or arfvedsonite. Comendite also occurs in Sardinia, Corsica, Ascension Island, Ethiopia, Somalia and other areas of East Africa. The 1903 eruption of Changbaishan volcano in north-east China erupted comendite pumice. Comendite derives its name from the area of Le Commende on San Pietro Island San Pietro Island (Italian: ''Isola di San Pietro'', Ligurian Tabarchino: ''Uiza de San Pé'', Sardinian: ''Isula 'e Sàntu Pèdru'') is an island approximately off the South western Coa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nido Formation
The Nido Formation is a stratigraphic unit of Neogene age in northwestern British Columbia, Canada. Naming The Nido Formation takes its name from Nido Creek, a stream flowing northeast from the eastern flank of Mount Edziza into Nuttlude Lake. Nido means "white man" in the Tahltan language. Geology The Nido Formation has a volume of , making it the second most voluminous geological formation of the Mount Edziza volcanic complex after the Armadillo Formation. It overlies the Raspberry, Armadillo and Little Iskut formations, all of which are Miocene in age. Also underlying the Nido Formation are pre- Tertiary rocks of the Stikinia Stikinia, or the Stikine terrane, is a terrane in British Columbia, Canada; the largest of the Canadian Cordillera. It formed as an independent, intraoceanic volcanic arc during the Paleozoic and Mesozoic. Stikinia forms the bedrock of numerous v ... terrane. Overlying the Nido Formation are the Spectrum, Pyramid, Ice Peak, Edziza and Big ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58See the 2014 version of the ICS geologic time scale million years ago. It is the second and most recent epoch of the Neogene Period in the . The Pliocene follows the Epoch and is followed by the Epoch. Prior to the 2009 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raspberry Formation
The Raspberry Formation is a stratigraphic unit of Miocene age in northwestern British Columbia, Canada. Naming The Raspberry Formation takes its name from Raspberry Pass, a mountain pass cutting through the central portion of the Mount Edziza volcanic complex. Geology The Raspberry Formation has a volume of , making it the third most voluminous geological formation comprising the Mount Edziza volcanic complex. It varies in elevation from less than along the Mess Creek Escarpment to near Armadillo Peak. The Raspberry Formation is overlain conformably by the Little Iskut Formation. An erosion surface separates the Raspberry Formation from the overlying Armadillo Formation and younger geological formations. Rocks of the Stikinia terrane underlie the Raspberry Formation. The Raspberry Formation consists of flat-lying alkali basalt and hawaiite flows. These flows are rusty brown and are interbedded with reddish-brown to yellow or orange scoria. The Raspberry Formation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkali Basalt
Alkali basalt or alkali olivine basalt is a dark-colored, porphyritic volcanic rock usually found in oceanic and continental areas associated with volcanic activity, such as oceanic islands, continental rifts and volcanic fields. Alkali basalt is characterized by relatively high alkali (Na2O and K2O) content relative to other basalts and by the presence of olivine and titanium-rich augite in its groundmass and phenocrysts, and nepheline in its CIPW norm. Geochemical characterization Alkali basalt is chemically classified as a rock in region B (basalt) of the total alkali versus silica (TAS) diagram that contains nepheline in its CIPW norm. Basalts that do not contain normative nepheline are characterized as sub-alkali basalts, which include tholeiitic basalts and calc-alkaline basalts. Petrography The groundmass of alkali basalt is mainly composed of olivine, titanium-rich augite and plagioclase feldspar and may have alkali feldspar or feldspathoid interstitially, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scree
Scree is a collection of broken rock fragments at the base of a cliff or other steep rocky mass that has accumulated through periodic rockfall. Landforms associated with these materials are often called talus deposits. Talus deposits typically have a concave upwards form, where the maximum inclination corresponds to the angle of repose of the mean debris particle size. The exact definition of scree in the primary literature is somewhat relaxed, and it often overlaps with both ''talus'' and ''colluvium''. The term ''scree'' comes from the Old Norse term for landslide, ''skriða'', while the term ''talus'' is a French word meaning a slope or embankment. In high-altitude arctic and subarctic regions, scree slopes and talus deposits are typically adjacent to hills and river valleys. These steep slopes usually originate from late-Pleistocene periglacial processes. Notable scree sites in Eastern North America include the Ice Caves at White Rocks National Recreation Area in southern Ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Goat
The mountain goat (''Oreamnos americanus''), also known as the Rocky Mountain goat, is a hoofed mammal endemic to mountainous areas of western North America. A subalpine to alpine species, it is a sure-footed climber commonly seen on cliffs and ice. Despite its vernacular name and both genera being in the same subfamily (Caprinae), the mountain goat is not a member of ''Capra'', the genus that includes all other goats, such as the wild goat (''Capra aegagrus''), from which the domestic goat is derived. Instead, it is more closely allied with the takins (''Budorcas'') and chamois (''Rupicapra''). Classification and evolution The mountain goat is an even-toed ungulate of the order Artiodactyla and the family Bovidae (along with antelopes, gazelles, and cattle). It belongs to the subfamily Caprinae, along with true goats, wild sheep, the chamois, the muskox and other species. The takins of the Himalayan region, while not a sister lineage of the mountain goat, are nonetheless ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jack Souther
Jack Gordon Souther (April 25, 1924 – June 1, 2014) was an American-born Canadian geologist, volcanologist, professor and engineer. He contributed significantly to the early understanding of recent volcanic activity in the Canadian Cordillera. Many of his publications continue to be regarded as classics in their field, even now several decades after they were written. Biography Jack Souther was born in Chicago, Illinois, United States on April 25, 1924. As a young child he moved to the U.S. state of Alabama. In his teenage years, Souther relocated with his family to the Canadian province of Alberta at a cattle ranch near the First Nations settlement of Morley. After his family lost the ranch, Souther moved with his family to the mountain town of Banff. Here, he attended Banff High School. In 1945 at the age of 21, Souther graduated as the class president. He was later accepted into a geological engineering program at the University of British Columbia in Vancouver. He was off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
