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Beagle Rupes
Beagle Rupes is an escarpment on Mercury, one of the highest and longest yet seen. It was discovered in 2008 when ''MESSENGER'' made its first flyby of the planet. It has an arcuate shape and is about long. The scarp is a surface manifestation of a thrust fault, which formed when the planet contracted as its interior cooled. Beagle Rupes consists of three segments. The central segment trends in the north–south direction and crosscuts the elliptically shaped Sveinsdóttir crater. The dimensions of the latter are . The floor of Sveinsdóttir was flooded by the smooth plains material and deformed by wrinkle-ridges before the appearance of Beagle Rupes. The maximum relief within the crater is about . To the south of Sveinsdóttir the scarp turns to the southeast. A crater is superposed on this segment. To the north of Sveinsdóttir the scarp turns to northeast completing a large arc. This segment of Beagle Rupes crosscuts and deforms a small crater. The relief in this places rea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sveinsdóttir Crater EN0108830230M
Sveinsdóttir is an Icelandic feminine patronymic, meaning ''daughter of Sveinn''. In Icelandic names, a patronymic is not a surname. Notable people with this name include: *Anna María Sveinsdóttir (born 1969), Icelandic basketball player *Ásta Kristjana Sveinsdóttir (born 1969), Icelandic philosopher * Auður Sveinsdóttir Laxness (1918–2012), Icelandic writer and craftswoman *Edda Sveinsdottir (1936–2022), Icelandic/Danish computer scientist *Gunnhildr Sveinsdóttir (died c. 1050), Queen consort or consorts of Sweden and Denmark * Herdís Sveinsdóttir (born 1956), Icelandic professor of nursing *Jóhanna Björk Sveinsdóttir (born 1989), Icelandic basketball player *Júlíana Sveinsdóttir (1889–1966), Icelandic painter and textile artist * Lára Sveinsdóttir (born 1955), Icelandic track and field athlete * Steinunn Sveinsdóttir (1767–1805), Icelandic murderer *Þorbjörg Sveinsdóttir Þorbjörg Sveinsdóttir (1827 – 1903) was an Icelandic midwife and feminist, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Beagle
HMS ''Beagle'' was a 10-gun brig-sloop of the Royal Navy, one of more than 100 ships of this class. The vessel, constructed at a cost of £7,803 (roughly equivalent to £ in 2018), was launched on 11 May 1820 from the Woolwich Dockyard on the River Thames. Later reports say the ship took part in celebrations of the coronation of King George IV of the United Kingdom, passing through the old London Bridge, and was the first rigged man-of-war afloat upriver of the bridge. There was no immediate need for ''Beagle'' so she " lay in ordinary", moored afloat but without masts or rigging. She was then adapted as a survey barque and took part in three survey expeditions. The second voyage of HMS ''Beagle'' is notable for carrying the recently graduated naturalist Charles Darwin around the world. While the survey work was carried out, Darwin travelled and researched geology, natural history and ethnology onshore. He gained fame by publishing his diary journal, best known as ''The Vo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Escarpment
An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations. The terms ''scarp'' and ''scarp face'' are often used interchangeably with ''escarpment''. Some sources differentiate the two terms, with ''escarpment'' referring to the margin between two landforms, and ''scarp'' referring to a cliff or a steep slope. In this usage an escarpment is a ridge which has a gentle slope on one side and a steep scarp on the other side. More loosely, the term ''scarp'' also describes a zone between a coastal lowland and a continental plateau which shows a marked, abrupt change in elevation caused by coastal erosion at the base of the plateau. Formation and description Scarps are generally formed by one of two processes: either by differential erosion of sedimentary rocks, or by movement of the Earth's crust at a geologic fault. The first process is the more common type: the escarpment is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (planet)
Mercury is the smallest planet in the Solar System and the closest to the Sun. Its orbit around the Sun takes 87.97 Earth days, the shortest of all the Sun's planets. It is named after the Roman god ' ( Mercury), god of commerce, messenger of the gods, and mediator between gods and mortals, corresponding to the Greek god Hermes (). Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or the eastern horizon before sunrise, usually in twilight. At this time, it may appear as a bright star-like object, but is more difficult to observe than Venus. From Earth, the planet telescopically displays the complete range of phases, similar to Venus and the Moon, which recurs over its synodic period of approximately 116 days. The synodic proximity of Mercury to Earth makes Mercury ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MESSENGER
''MESSENGER'' was a NASA robotic space probe that orbited the planet Mercury between 2011 and 2015, studying Mercury's chemical composition, geology, and magnetic field. The name is a backronym for "Mercury Surface, Space Environment, Geochemistry, and Ranging", and a reference to the messenger god Mercury from Roman mythology. ''MESSENGER'' was launched aboard a Delta II rocket in August 2004. Its path involved a complex series of flybys – the spacecraft flew by Earth once, Venus twice, and Mercury itself three times, allowing it to decelerate relative to Mercury using minimal fuel. During its first flyby of Mercury in January 2008, ''MESSENGER'' became the second mission, after Mariner 10 in 1975, to reach Mercury. ''MESSENGER'' entered orbit around Mercury on March 18, 2011, becoming the first spacecraft to do so. It successfully completed its primary mission in 2012. Following two mission extensions, the spacecraft used the last of its maneuvering propellant to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrust Fault
A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks. Thrust geometry and nomenclature Reverse faults A thrust fault is a type of reverse fault that has a dip of 45 degrees or less. If the angle of the fault plane is lower (often less than 15 degrees from the horizontal) and the displacement of the overlying block is large (often in the kilometer range) the fault is called an ''overthrust'' or ''overthrust fault''. Erosion can remove part of the overlying block, creating a ''fenster'' (or '' window'') – when the underlying block is exposed only in a relatively small area. When erosion removes most of the overlying block, leaving island-like remnants resting on the lower block, the remnants are called ''klippen'' (singular '' klippe''). Blind thrust faults If the fault plane terminates before it reaches the Earth's surface, it is referred to as a ''blind thrust'' fault. Because of the lack of surface evidence, blind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sveinsdóttir (crater)
Sveinsdóttir is a large impact crater on Mercury. Its dimensions are . Sveinsdóttir crater is a distinctive feature on Mercury's landscape. Unusually elliptical in shape, the crater was produced by the impact of an object that hit Mercury's surface obliquely. The floor of Sveinsdóttir was later covered by the smooth plains material and deformed by wrinkle-ridges before the scarp called Beagle Rupes appeared. More than long and one of the largest fault scarps on the planet, Beagle Rupes marks the surface expression of a large thrust fault believed to have formed as Mercury cooled and the entire planet shrank. Beagle Rupes crosscuts Sveinsdóttir crater and has uplifted the easternmost portion of the crater floor by almost a kilometer, indicating that most of the fault activity at Beagle Rupes occurred after the impact that created Sveinsdóttir. Crosscutting relationships such as this are used to understand the sequence in time of the different processes that have affected Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrinkle-ridge
A wrinkle ridge is a type of feature commonly found on lunar maria, or basalt plains. These features are low, sinuous ridges formed on the mare surface that can extend for up to several hundred kilometers. Wrinkle ridges are tectonic features created after the lava cooled and solidified. They frequently outline ring structures buried within the mare, follow circular patterns outlining the mare, or intersect protruding peaks. They are sometimes called ''veins'' due to their resemblance to the veins that protrude from beneath the skin. Wrinkle ridges are named with the Latin designation ''dorsum'' (plural ''dorsa''). The standard IAU nomenclature uses the names of people (generally scientists) to identify wrinkle ridges on the Moon. For example, the Dorsa Burnet are named for Thomas Burnet, and the Dorsum Owen is named after George Owen of Henllys. Wrinkle ridges can also be found on Mars, for example in Chryse Planitia, on several of the asteroids that have been vis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Darwin
Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English natural history#Before 1900, naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all species of life have descended from a Common descent, common ancestor is now generally accepted and considered a fundamental concept in science. In a joint publication with Alfred Russel Wallace, he introduced his scientific theory that this Phylogenetics, branching pattern of evolution resulted from a process he called natural selection, in which the struggle for existence has a similar effect to the artificial selection involved in selective breeding. Darwin has been described as one of the most influential figures in human history and was honoured by Burials and memorials in Westminster Abbey, burial in Westminster Abbey. Darwin's early interest in nature led him to neglect his medical education at the University of Edinburgh Medical School, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Escarpments
A list of escarpments follows below. Planets Earth Africa * Elgeyo Escarpment (Great Rift Valley) * Great Escarpment, Southern Africa **Including the Drakensberg and God's Window in Mpumalanga's Eastern Escarpment * Bandiagara Escarpment (Mali) * Zambezi Escarpment (Zambia) * East coast, Madagascar Antarctica * Usas Escarpment Asia * Sharon Escarpment, Israel * Tuwaiq, Saudi Arabia * Vindhya Range, India * Western Ghats, India * Wulian Feng, China Australia and New Zealand * Australia ** Great Escarpment, Australia ** Darling Scarp ** Illawarra Escarpment ** Lake George Escarpment ** Nullarbor Escarpment * New Zealand ** The western slope of the Southern Alps (along the Alpine Fault) ** The Kaimai escarpment, above the Hauraki Plains ** The Paekākāriki escarpment between Paekākāriki and Pukerua Bay Europe * England ** Cotswold escarpment ** Chiltern escarpment ** North Downs ** South Downs ** A common placename denominating an escarpment in England is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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