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Mount Stephen
Mount Stephen, , is a mountain located in the Kicking Horse River Valley of Yoho National Park, km east of Field, British Columbia, Field, British Columbia, Canada. The mountain was named in 1886 for George Stephen, 1st Baron Mount Stephen, George Stephen, the first president of the Canadian Pacific Railway. The mountain is mainly composed of shales and Dolomite (rock), dolomites from the Cambrian Period, some 550 million years ago. The Stephen Formation, a stratigraphical unit of the Western Canadian Sedimentary Basin was first described at the mountain and was named for it. Stephen has a subpeak known as Stephen SE1, at the end of a 1 km ridge, 132° from the main peak, visible from Lake O'Hara. Climbing The first ascent was made on September 9, 1887 by James. J. McArthur and his assistant T. Riley, which was made even more difficult by the surveying equipment they also carried with them. Unfortunately for them, smoke from forest fires limited visibility from the top. Begin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Park Ranges
The Park Ranges, also known as the Main Ranges, are a group of mountain ranges in the Canadian Rockies of southeastern British Columbia and southwestern Alberta, Canada. It is one of the three main subranges and the most central of the Continental Ranges, extending from southeast of Mount McGregor to the Fernie Basin. Subranges * Ball Range * Blackwater Range * Blue Range * Bow Range * Chaba Icefield * Clemenceau-Chaba * Columbia Icefield * Drummond Group * Freshfields * Harrison Group * Hooker Icefield * Kitchen Range * Le Grand Brazeau *Massive Range The Massive Range is a mountain range of the Canadian Rockies, located in the southwestern area of the Bow River valley in Banff National Park, Canada. This range includes the following mountains and peaks: Geology The rock layers on the w ... * McKale-Chalco Divide * Mitchell Range * Morkill Ranges * Ottertail Range * Rainbow Range * Royal Group * Selwyn Range * Spray Mountains * Sundance Range * South Jasper Ranges ** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolomite (rock)
Dolomite (also known as dolomite rock, dolostone or dolomitic rock) is a sedimentary rock, sedimentary carbonate rock that contains a high percentage of the mineral Dolomite (mineral), dolomite, CaMg(CO3)2. It occurs widely, often in association with limestone and evaporites, though it is less abundant than limestone and rare in Cenozoic rock beds (beds less than about 66 million years in age). One of the first geologists to distinguish dolomite from limestone was Déodat Gratet de Dolomieu, a French mineralogist and geologist after whom it is named. He recognized and described the distinct characteristics of dolomite in the late 18th century, differentiating it from limestone. Most dolomite was formed as a magnesium replacement of limestone or of Lime (mineral), lime mud before lithification. The geological process of conversion of calcite to dolomite is known as dolomitization and any intermediate product is known as dolomitic limestone. The "dolomite problem" refers to the v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Ontario Museum
The Royal Ontario Museum (ROM) is a museum of art, world culture and natural history in Toronto, Ontario, Canada. It is one of the largest museums in North America and the largest in Canada. It attracts more than one million visitors every year, making it List of most-visited museums by region, the most-visited museum in Canada. It is north of Queen's Park (Toronto), Queen's Park, in the University of Toronto district, with its main entrance on Bloor Street, Bloor Street West. Museum station (Toronto), Museum subway station is named after it and, since a 2008 renovation, is decorated to resemble the ROM's collection at the platform level; Museum station's northwestern entrance directly serves the museum. Established on April 16, 1912, and opened on March 19, 1914, the ROM has maintained close relations with the University of Toronto throughout its history, often sharing expertise and resources. It was under direct control and management of the University of Toronto until 1968, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Stephen House
Mount Stephen House was a hotel located in Field, British Columbia from 1886 to 1963. It was owned by the Canadian Pacific Railway (CPR), and was a central feature of Yoho National Park. It was named for the eponymous Mount Stephen, which was named for a president of the CPR, George Stephen. Along with Glacier House in Glacier National Park and Fraser Canyon House (aka Canyon House) at North Bend in the Fraser Canyon, it was designed by Thomas Sorby. Because of the steep grade of the " Big Hill" east of Field (which climbs to the Continental Divide), heavy dining cars could not be hauled over this section of track. The hotel was designed as a simple meal stop between Banff and Golden. The demand for overnight visits increased as tourists began to explore the surrounding area. Between 1900 and 1902, the hotel underwent a major expansion designed by architect Francis Rattenbury. Sorby's small rectangular building was augmented with fifty new rooms, as well as amenities such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Stephen Trilobite Beds
The Mount Stephen trilobite beds (UNSM locality 14s) are a series of fossil strata on Mount Stephen, British Columbia that contain exceptionally preserved fossil material. Part of the same stratigraphic unit as the Burgess Shale deposit, many non-mineralized parts (such as anomalocarid claws, sponges, and trilobite legs) are preserved; in addition, a high density of trilobite fossils is present. History The trilobite beds were the first Burgess shale locality to be discovered. The richness of fossils in the Field area was first identified by workers associated with the construction of the Trans-Canada railway, which had (somewhat controversially) been routed through the Kicking Horse valley. Richard McConnell, of the Geological Survey of Canada, was pointed to the beds by a railway worker whilst mapping the geology around the railway line in September 1886. Several unusual fossils were subsequently described from this site, including sponges, worms, and the appendages of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Runoff
Surface runoff (also known as overland flow or terrestrial runoff) is the unconfined flow of water over the ground surface, in contrast to ''channel runoff'' (or ''stream flow''). It occurs when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil. This can occur when the soil is #Saturation excess overland flow, saturated by water to its full capacity, and the rain arrives #Infiltration excess overland flow, more quickly than the soil can absorb it. Surface runoff often occurs because wikt:impervious#Adjective, impervious areas (such as roofs and Road surface, pavement) do not allow water to soak into the ground. Furthermore, runoff can occur either through natural or human-made processes. Surface runoff is a major component of the water cycle. It is the primary agent of Soil erosion#Rainfall and runoff, soil erosion by water. The land area producing runoff that drains to a common point is called a drainage basin. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Climbing
Ice climbing is a climbing discipline that involves ascending routes consisting entirely of frozen water. To ascend, the ice climber uses specialist equipment, particularly double ice axes (or the more modern ice tools) and rigid crampons. To protect the route, the ice climber uses steel ice screws that require skill to employ safely and rely on the ice holding firm in any fall. Ice climbing routes can vary significantly by type, and include seasonally frozen waterfalls, high permanently frozen alpine couloirs, and large hanging icicles. From the 1970s, ice climbing developed as a standalone skill from alpine climbing (where ice climbing skills are used on ice and snow). Ice climbing grades peak at WI6 to WI7 as ice tends to hang vertically at its most severe. WI7 is very rare and usually attributed to overhanging ice with serious risk issues (i.e. unstable ice, little protection, and a risk of death). Mixed climbing has pushed the technical difficulty of ice climbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subarctic Climate
The subarctic climate (also called subpolar climate, or boreal climate) is a continental climate with long, cold (often very cold) winters, and short, warm to cool summers. It is found on large landmasses, often away from the moderating effects of an ocean, generally at latitudes from 50°N to 70°N, poleward of the humid continental climates. Like other Class D climates, they are rare in the Southern Hemisphere, only found at some isolated highland elevations. Subarctic or boreal climates are the source regions for the cold air that affects temperate latitudes to the south in winter. These climates represent Köppen climate classification ''Dfc'', ''Dwc'', ''Dsc'', ''Dfd'', ''Dwd'' and ''Dsd''. Description This type of climate offers some of the most extreme seasonal temperature variations found on the planet: in winter, temperatures can drop to below and in summer, the temperature may exceed . However, the summers are short; no more than three months of the year (but at least on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Köppen Climate Classification
The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (temperate), ''D'' (continental), and ''E'' (polar). Each group and subgroup is represented by a letter. All climates are assigned a main group (the first letter). All climates except for those in the ''E'' group are assigned a seasonal precipitation subgroup (the second letter). For example, ''Af'' indicates a tropical rainforest climate. The system assigns a temperature subgroup for all groups other than those in the ''A'' group, indicated by the third letter for climates in ''B'', ''C'', ''D'', and the second letter for climates in ''E''. Other examples include: ''Cfb'' indicating an oceanic climate with warm summers as indicated by the ending ''b.'', while ''Dwb'' indicates a semi-Monsoon continental climate, monsoonal continental climate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartzite
Quartzite is a hard, non- foliated metamorphic rock that was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts, and hence quartzite is a metasandstone. Pure quartzite is usually white to grey, though quartzites often occur in various shades of pink and red due to varying amounts of hematite. Other colors, such as yellow, green, blue and orange, are due to other minerals. The term ''quartzite'' is also sometimes used for very hard but unmetamorphosed sandstones that are composed of quartz grains thoroughly cemented with additional quartz. Such sedimentary rock has come to be described as orthoquartzite to distinguish it from metamorphic quartzite, which is sometimes called metaquartzite to emphasize its metamorphic origins. Quartzite is very resistant to chemical weathering and often forms ridges and resist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade (climbing)
Many climbing routes have grades for the technical difficulty, and in some cases for the risks, of the route. The first ascent, first ascensionist can suggest a grade but it will be amended for the ''consensus view'' of subsequent ascents. While many countries with a tradition of climbing developed their own grading systems, a small number of grading systems have become internationally dominant for each type of climbing, and which has led to the standardization of grading worldwide. Over the years, grades have List of grade milestones in rock climbing, consistently risen in all forms of climbing, helped by improvements in climbing technique and climbing equipment, equipment. In free climbing (i.e. climbing rock routes with no aid), the most popular grading systems are the French numerical or sport system (e.g. f7c+), the American YDS system (e.g. 5.13a), and latterly the UIAA scale (e.g. IX+). These systems grade technical difficulty being the main focus of the lower-risk a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Though the fossil record is incomplete, numerous studies have demonstrated that there is enough information available to give a good understanding of the pattern of diversification of life on Earth. In addition, the record can predict and fill gaps such as the discovery of '' Tiktaalik'' in the arctic of Canada. Paleontology includes the study of fossils: their age, method of formation, and evolutionary significance. Specimens are sometimes considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years to 4.1 billion years old. Early edition, published online before prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
