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Dorsum Grabau
Dorsum Grabau is a wrinkle ridge at north of Timocharis crater in Mare Imbrium on the Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of .... It is 124 km long and was named after American paleontologist Amadeus William Grabau in 1976. Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN) References External links LAC-40 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsum Grabau AS15-M-1548
Dorsum (plural Dorsa) is a Latin word. In science, it may refer to: Anatomy * Dorsum (anatomy), the upper side of an animal, or the back in erect organisms **Dorsum humanum, the human back * Dorsum of foot, the top of the foot * Dorsum of hand, the back of the hand * The back of the tongue, which is used for articulating dorsal consonants Other uses * Dorsum (moth), ''Dorsum'' (moth), genus of moths of the family Erebidae * Dorsum (astrogeology), wrinkle ridges found on planets or moons * Theta Capricorni, a star on the back of Capricornus {{disambiguation ... [...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 visited by sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timocharis (crater)
Timocharis is a prominent lunar impact crater located on the Mare Imbrium. It was named after ancient Greek astronomer Timocharis. The closest crater of comparable dimensions is Lambert to the west. The smaller craters Feuillée and Beer lie to the east of Timocharis. The rim of Timocharis has a somewhat polygonal outline, with an outer rampart that extends over 20 kilometers in all directions. The interior wall is slumped and sharply terraced. The center of the floor is occupied by a craterlet that lies on a slight rise. This impact has almost completely removed the original central peak. The crater may have a minor ray system that extends for over . The crater is likely to have been formed in the Eratosthenian, between 3.2 and 1.1 Billion years ago, as it lacks a prominent ray system, but has not been significantly eroded by impacts. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mare Imbrium
Mare Imbrium (Latin ''imbrium'', the "Sea of Showers" or "Sea of Rains", "Sea of Tears") is a vast lava plain within the Imbrium Basin on the Moon and is one of the larger craters in the Solar System. The Imbrium Basin formed from the collision of a proto-planet during the Late Heavy Bombardment. Basaltic lava later flooded the giant crater to form the flat volcanic plain seen today. The basin's age has been estimated using uranium–lead dating methods to approximately 3.9 billion years ago, and the diameter of the impactor has been estimated to be 250 ± 25 km. The Moon's maria (plural of mare) have fewer features than other areas of the Moon because molten lava pooled in the craters and formed a relatively smooth surface. Mare Imbrium is not as flat as it was originally thought, because later events have altered its surface. Origin Mare Imbrium formed when a proto-planet from the asteroid belt collided with the moon during the Late Heavy Bombardment. The impact i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moon
The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia). The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System. It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at , with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density. The Moon orbits Earth at an average distance of , or about 30 times Earth's diameter. Its gravitational influence is the main driver of Earth's tides and very slowly lengthens Earth's day. The Moon's orbit around Earth has a sidereal period of 27.3 days. During each synodic period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amadeus William Grabau
Amadeus William Grabau (January 9, 1870 – March 20, 1946) was an American geologist who worked in China. Biography Grabau's grandfather, J.A.A. Grabau, led a group of dissident Lutheran immigrants from Germany to Buffalo, New York. His education began in his father's parochial school in his birthplace of Cedarburg, Wisconsin, and then the public high school there. After his father became head of the Martin Luther Seminary in 1885, he finished high school in Buffalo. He took classes in the evenings while apprenticed to a bookbinder. His interest in local fossils grew. In a correspondence course in mineralogy, he impressed geologist William Otis Crosby enough to hire him at the Boston Society of Natural History in 1890, and arrange his education at Boston Latin, MIT, and Harvard. He taught at MIT and Rensselaer Polytechnic Institute early in his career. In 1901 he became a professor at Columbia University in New York. He married Barnard student Mary Antin on October 5, 1901. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridges On The Moon
A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side. The lines along the crest formed by the highest points, with the terrain dropping down on either side, are called the ridgelines. Ridges are usually termed hills or mountains as well, depending on size. Smaller ridges, especially those leaving a larger ridge, are often referred to as spurs. Types There are several main types of ridges: ;Dendritic ridge: In typical dissected plateau terrain, the stream drainage valleys will leave intervening ridges. These are by far the most common ridges. These ridges usually represent slightly more erosion resistant rock, but not always – they often remain because there were more joints where the valleys formed or other chance occurrences. This type of ridge is generally somewhat random in orientation, often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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