Absolute Flux Calibration
... - They are quite compact (hence better for extended configurations and/or higher frequencies than planets) and still sufficiently bright (>500mJy@3mm) ...
... - They are quite compact (hence better for extended configurations and/or higher frequencies than planets) and still sufficiently bright (>500mJy@3mm) ...
Chapter 7
... grain boundary processes such as faster diffusion along otherwise melt-free grain edges and grain interfaces and the reduction of load-bearing solid-solid contact area (see table 7.1). Variations in the (local) melt fraction and factors that affect the melt distribution, such as grain size distribut ...
... grain boundary processes such as faster diffusion along otherwise melt-free grain edges and grain interfaces and the reduction of load-bearing solid-solid contact area (see table 7.1). Variations in the (local) melt fraction and factors that affect the melt distribution, such as grain size distribut ...
Volatile Cycling of H2O, CO2, F, and Cl in the HIMU Mantle: A New
... Alternatively, the high U/Pb inferred for the HIMU mantle source may be a result of U incorporation into oceanic crust during submarine alteration [Hart and Staudigel, 1982; Hofmann and White, 1982; Chauvel et al., 1992; Kelley et al., 2003], and this elevated U/Pb ratio preserved during subduction ...
... Alternatively, the high U/Pb inferred for the HIMU mantle source may be a result of U incorporation into oceanic crust during submarine alteration [Hart and Staudigel, 1982; Hofmann and White, 1982; Chauvel et al., 1992; Kelley et al., 2003], and this elevated U/Pb ratio preserved during subduction ...
A. M. Celâl ŞENGÖR, Boris A. NATAL`IN, Gürsel
... rising high into the region of eternal snow, which are more re- ...
... rising high into the region of eternal snow, which are more re- ...
Near-Ultrahigh Pressure Processing of Continental Crust: Miocene
... Only xenoliths erupted from ultrahigh-pressure settings can provide this important information, but such rocks are exceptionally rare. We report here on the petrology, physical properties, and geochronology of a Miocene xenolith suite from the Pamir that has captured nearultrahigh pressure metamorph ...
... Only xenoliths erupted from ultrahigh-pressure settings can provide this important information, but such rocks are exceptionally rare. We report here on the petrology, physical properties, and geochronology of a Miocene xenolith suite from the Pamir that has captured nearultrahigh pressure metamorph ...
The Planet Neptune
... is the cloud top. Then there are the gases (Hydrogen, helium and methane) and the last layer is rock and ice. ...
... is the cloud top. Then there are the gases (Hydrogen, helium and methane) and the last layer is rock and ice. ...
Family Space Day Overview - Comets
... Walk Through Comets Comets are ‘leftovers’ from the formation of our solar system around 4.6 billion years ago. They have been called “dirty snowballs.” They are small celestial objects, made of ice, gas, dust, and a small amount of organic material, that orbit our Sun. There are about 1000 known c ...
... Walk Through Comets Comets are ‘leftovers’ from the formation of our solar system around 4.6 billion years ago. They have been called “dirty snowballs.” They are small celestial objects, made of ice, gas, dust, and a small amount of organic material, that orbit our Sun. There are about 1000 known c ...
Geology and petrology of the felsic intrusions in the
... “Rocks are records of events that took place at the time they formed. They are books. They have a different vocabulary, a different alphabet, but you learn how to read them.” -John McPhee- ...
... “Rocks are records of events that took place at the time they formed. They are books. They have a different vocabulary, a different alphabet, but you learn how to read them.” -John McPhee- ...
A two-stage formation process for the Oort comet cloud and its
... into the outer cloud as possible, it is required that (90 377) Sedna is on the inner edge of the innermost Oort cloud. Since Sedna’s inclination is small and the closest part of the innermost Oort cloud appears to be flattened (Brasser et al. 2006; Kaib & Quinn 2008), this might seem like a plausibl ...
... into the outer cloud as possible, it is required that (90 377) Sedna is on the inner edge of the innermost Oort cloud. Since Sedna’s inclination is small and the closest part of the innermost Oort cloud appears to be flattened (Brasser et al. 2006; Kaib & Quinn 2008), this might seem like a plausibl ...
CK-12 Earth Science For High School - Workbook
... at a scientific conference, where she can talk with other scientists and get feedback on her work. Using what she learns, she may go on to write a professional paper about her research and submit it to a scientific journal. Before the paper is accepted for publication, several scientists who are exp ...
... at a scientific conference, where she can talk with other scientists and get feedback on her work. Using what she learns, she may go on to write a professional paper about her research and submit it to a scientific journal. Before the paper is accepted for publication, several scientists who are exp ...
13 Oxygen Isotopes in Zircon - University of Wisconsin
... A relatively new and very promising approach to zircon separation is the Electric Pulse Disintegration (EPD), which uses spark discharges of >100 kV to disaggregate a rock, largely along grain boundaries (Rudashevsky et al. 1995, Saint-Eidukat and Weiblen 1996). This technique can preserve delicate ...
... A relatively new and very promising approach to zircon separation is the Electric Pulse Disintegration (EPD), which uses spark discharges of >100 kV to disaggregate a rock, largely along grain boundaries (Rudashevsky et al. 1995, Saint-Eidukat and Weiblen 1996). This technique can preserve delicate ...
Critique of Modern Oort Comet Theory
... form in the early solar system, they would form in nearly circular orbits originally as other planetesimals and asteroids; then planets such as Jupiter or Saturn could modify orbits of some of these small objects and increase the eccentricity and size of the orbits. Once an orbit is made more ellipt ...
... form in the early solar system, they would form in nearly circular orbits originally as other planetesimals and asteroids; then planets such as Jupiter or Saturn could modify orbits of some of these small objects and increase the eccentricity and size of the orbits. Once an orbit is made more ellipt ...
Perspectives on the origin of plagiogranite in ophiolites from oxygen
... these silicic rocks originated is provided in the following sections, with emphasis on the well-studied Oman ophiolite. The Oman ophiolite represents one of most well-exposed and continuous subaerial sections of oceanic crust, closely resembling the layered Penrose ophiolite model (Anonymous, 1972). ...
... these silicic rocks originated is provided in the following sections, with emphasis on the well-studied Oman ophiolite. The Oman ophiolite represents one of most well-exposed and continuous subaerial sections of oceanic crust, closely resembling the layered Penrose ophiolite model (Anonymous, 1972). ...
Etymology - Link Observatory
... Solar System, the dust reflecting sunlight directly and the gases glowing from ionisation. Most comets are too faint to be visible without the aid of a telescope, but a few each decade become bright enough to be visible to the naked eye. Occasionally a comet may experience a huge and sudden outburst ...
... Solar System, the dust reflecting sunlight directly and the gases glowing from ionisation. Most comets are too faint to be visible without the aid of a telescope, but a few each decade become bright enough to be visible to the naked eye. Occasionally a comet may experience a huge and sudden outburst ...
A Geochemical Study of Crustal Plutonic Rocks from the Southern
... shows that the plutonic suites formed via melting of boninite crust or by crystallization from a boninite-like magma rather than other sources that are found in the IBM system. The data presented support the hypothesis that the plutonic rocks from RD63 and RD64 are products of subduction initiation ...
... shows that the plutonic suites formed via melting of boninite crust or by crystallization from a boninite-like magma rather than other sources that are found in the IBM system. The data presented support the hypothesis that the plutonic rocks from RD63 and RD64 are products of subduction initiation ...
The Project Gutenberg eBook #32000: An
... edition, the aim has been to present the great subject of astronomy so that it can be easily comprehended even by a person who has not had extensive scientific training. It has been assumed that the reader has no intention of becoming an astronomer, but that he has an interest in the wonderful unive ...
... edition, the aim has been to present the great subject of astronomy so that it can be easily comprehended even by a person who has not had extensive scientific training. It has been assumed that the reader has no intention of becoming an astronomer, but that he has an interest in the wonderful unive ...
A long in situ section of the lower ocean crust: results of ODP Leg
... 866 m of gabbro. Crust formed at the ultra-slowspreading SW Indian Ridge is believed to be only about 4 km thick [2]. If pillow lavas and dikes comprise 1.5^2 km of this, the lower crustal section should be no more than 2^2.5 km thick. Hole 735B is now deep enough to be regarded as representative of ...
... 866 m of gabbro. Crust formed at the ultra-slowspreading SW Indian Ridge is believed to be only about 4 km thick [2]. If pillow lavas and dikes comprise 1.5^2 km of this, the lower crustal section should be no more than 2^2.5 km thick. Hole 735B is now deep enough to be regarded as representative of ...
granites of the lachlan fold belt
... would have compositions close to those of the source materials. We refer to these as direct images. In the case of granites that formed at higher temperatures from complete melts, the quality of those images will be lower, and we refer to them as indirect images. As an example, we have the high Cu, ...
... would have compositions close to those of the source materials. We refer to these as direct images. In the case of granites that formed at higher temperatures from complete melts, the quality of those images will be lower, and we refer to them as indirect images. As an example, we have the high Cu, ...
Evolution of the continental crust
... estimated from the compositions of model new crust and the upper continental crust19. Calculations reveal that the upper crust reflects ,14% partial melting, or the analogous amount of fractional crystallization, of average new basaltic crust (Table 1). Inevitably, the residual composition is very d ...
... estimated from the compositions of model new crust and the upper continental crust19. Calculations reveal that the upper crust reflects ,14% partial melting, or the analogous amount of fractional crystallization, of average new basaltic crust (Table 1). Inevitably, the residual composition is very d ...
Earth & Space Science An open source text edited by MPS teachers
... This book is adapted primarily from the excellent materials created by the CK-12 Foundation – http://ck12.org/ – which are licensed under the Creative Commons Attribution NonCommercial ShareAlike license. We express our gratitude to the CK-12 Foundation for their pioneering work on secondary scienc ...
... This book is adapted primarily from the excellent materials created by the CK-12 Foundation – http://ck12.org/ – which are licensed under the Creative Commons Attribution NonCommercial ShareAlike license. We express our gratitude to the CK-12 Foundation for their pioneering work on secondary scienc ...
Saturn - Heroku
... vehicles owner assistance gm com - saturn vehicles if you ve owned one of our vehicles then you know firsthand about the saturn difference it s a truly unique way of doing things from customer, nasa spacecraft dives between saturn and its rings nasa - nasa s cassini spacecraft is back in contact wit ...
... vehicles owner assistance gm com - saturn vehicles if you ve owned one of our vehicles then you know firsthand about the saturn difference it s a truly unique way of doing things from customer, nasa spacecraft dives between saturn and its rings nasa - nasa s cassini spacecraft is back in contact wit ...
Launch - Pluto - JHUAPL - The Johns Hopkins University Applied
... Pluto has been a harbinger of the mysteries that await on the planetary frontier. In 1930, it offered a preview of the icy, rocky objects in what would become known as the Kuiper Belt; half a century later, with the discovery of Charon, it became the first of what we now know are thousands of binary o ...
... Pluto has been a harbinger of the mysteries that await on the planetary frontier. In 1930, it offered a preview of the icy, rocky objects in what would become known as the Kuiper Belt; half a century later, with the discovery of Charon, it became the first of what we now know are thousands of binary o ...
Study Guide for Content Mastery
... 8. The equator is at 180° latitude. 9. The south pole is at 90° south longitude. 10. One degree of latitude is equivalent to about 111 km on Earth’s surface. 11. Each degree of latitude is divided into 360 minutes. 12. Lines of longitude are also called meridians. 13. The prime meridian is the refer ...
... 8. The equator is at 180° latitude. 9. The south pole is at 90° south longitude. 10. One degree of latitude is equivalent to about 111 km on Earth’s surface. 11. Each degree of latitude is divided into 360 minutes. 12. Lines of longitude are also called meridians. 13. The prime meridian is the refer ...
an ultradeep survey for irregular satellites of uranus
... satellite capture. The giant planets currently have no efficient mechanism of energy dissipation for satellite capture. During the planet formation epoch, several mechanisms may have operated to capture satellites: (1) gas drag in an extended, primordial planetary atmosphere ( Pollack et al. 1979), ...
... satellite capture. The giant planets currently have no efficient mechanism of energy dissipation for satellite capture. During the planet formation epoch, several mechanisms may have operated to capture satellites: (1) gas drag in an extended, primordial planetary atmosphere ( Pollack et al. 1979), ...
Ultra Deep Survey for Irregular Satellites of Uranus
... rate, satellites would have trailed a distance comparable to the FWHM of the seeing during the 400 s exposures. The data were analyzed to find solar system bodies in two complementary ways. First, a computer algorithm was used to detect objects that appeared in all three images from one night and wh ...
... rate, satellites would have trailed a distance comparable to the FWHM of the seeing during the 400 s exposures. The data were analyzed to find solar system bodies in two complementary ways. First, a computer algorithm was used to detect objects that appeared in all three images from one night and wh ...
Late Heavy Bombardment
The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth. During this interval, a disproportionately large number of asteroids apparently collided with the early terrestrial planets in the inner Solar System, including Mercury, Venus, Earth, and Mars. The LHB happened after the Earth and other rocky planets had formed and accreted most of their mass, but still quite early in Earth's history.Evidence for the LHB derives from lunar samples brought back by the Apollo astronauts. Isotopic dating of Moon rocks implies that most impact melts occurred in a rather narrow interval of time. Several hypotheses are now offered to explain the apparent spike in the flux of impactors (i.e. asteroids and comets) in the inner Solar System, but no consensus yet exists. The Nice model is popular among planetary scientists; it postulates that the gas giant planets underwent orbital migration and scattered objects in the asteroid and/or Kuiper belts into eccentric orbits, and thereby into the path of the terrestrial planets. Other researchers argue that the lunar sample data do not require a cataclysmic cratering event near 3.9 Ga, and that the apparent clustering of impact melt ages near this time is an artifact of sampling materials retrieved from a single large impact basin. They also note that the rate of impact cratering could be significantly different between the outer and inner zones of the Solar System.