
	Where results make sense

Topic: Planetary differentiation

Related Topics

Geothermal (geology)

KREEP

Gravitational binding energy

Earth

Luma key

Phosphorus

Disinvestment

Portuguese (Guyana)

Kelvin

Daniel Defoe

Robinson Crusoe

Artaxata

Snail

In the News (Sat 14 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Space Studies Board
		A principal objective in planetary exploration is the determination of the age, composition, and distribution of crustal materials, including volatiles.
		The lunar highlands appear to be the result of differentiation at 4.5 billion years and consist of minerals that floated in the melt.
		The heat source itself is of major interest; it is probably a combination of residual heat from planetary formation and gravitational energy from continued differentiation and rainout of heavier elements, such as helium, due to immiscibility with hydrogen.
	www7.nationalacademies.org /ssb/21plech3.html (13504 words)

	Research at Brown
		Formation and Evolution of Planetary Crusts and Interiors establishes a specific theme focusing on the starting materials and their evolution in response to different planetary processes and thermal evolution.
		The Planetary Geological Processes theme focuses on the mechanisms and effects of forces that shape planetary surfaces and their relation to the interior.
		Detailed information about planetary surfaces permits reassessment of the nature of planetary interiors, processes of planetary heat loss, patterns of convection and thermal evolution, early differentiation and crustal formation, and exchange processes with the atmosphere.
	www.planetary.brown.edu /html_pages/research.htm (2131 words)

	MrSci.com: All Science, All the Time
		Planetary science, also known as planetology or planetary astronomy, is the science of planets, or planetary systems, and the solar system.
		Planetary science studies objects ranging in size from micrometeoroids to gas giants, their composition, dynamics and history.
		Planetary science, also known as planetology or planetary astronomy, is the science of planets, or planetary systems...
	www.mrsci.com /applied/planetary.html (220 words)

	Planetary Differentiation
		In the outer solar system similar effects may take place but the materials may be hydrocarbons such as methane, water ice, or frozen carbon dioxide.
		Note that some materials may differentiate to regions due to their chemical affinities rather than their densities, "carried along" by other materials that they're associated with; the uranium in Earth's crust is an example.
		Differentiation on Earth had probably separated many lighter materials toward the surface, so the splash probably removed many light materials from the planet.
	www.seattleluxury.com /encyclopedia/entry/planetary_differentiation (658 words)

	Planetary differentiation : Information and resources about Planetary differentiation : School Work Guru
		In cosmogony, planetary differentiation is a process by which the denser portions of a molten planet will sink to the center; while less dense materials rise to the surface.
		Such a process tends to create a core, crust, and mantle.
		Note that some materials may differentiate to regions due to their chemical affinities rather than their densities, "carried along" by other materials that they're associated with; the uranium in Earth's crust is an example.
	www.schoolworkguru.org /encyclopedia/p/pl/planetary_differentiation.html (183 words)

	Differentiation
		Differentiation is a scientific term which really means "to separate".
		Ganymede/Callisto are examples of contiguous moons which did/did not differentiate early in their histories.
		The lack of differentiation may say something about how warm these planets were upon formation.
	www.windows.ucar.edu /tour/link=/glossary/differentiation.html&_ylu=X3oDMTBwdTQxbTI5BGNvbG8DZQRwb3MDOQRzZWMDc3IEdnRpZAM-/SIG=19kf31por/EXP=1152438246/**http:/216.109.125.130/search/cache (211 words)

	[No title]
		Differentiating between those volatile characteristics inherited by Mars and those generated over time is important to understand the origin and evolution of the atmosphere, interactions between the atmospheric and surface, and whether compounds necessary for life might have been present on early Mars.
		A record of this earliest phase of differentiation on both bodies is preserved in the structure and composition of their interiors and in the range of ancient rock types exposed on their surfaces.
		Measurements: Key to understanding planetary asymmetry is to characterize the internal structure, distribution of rock types and compositions, ages of different geologic terranes (broad regions that experienced a common geologic history), and heat flow from the interior.
	mepag.jpl.nasa.gov /reports/MMSSG_white_paper_10-25-04.doc (10143 words)

	ch4
		The physical and chemical processes operating on a given planetary surface can be understood and evaluated only if the composition, pressure, temperature, and dynamic processes of the atmosphere, as well as the composition of the surface materials and the crustal processes acting on these materials, are well determined.
		All planetary objects are continuously bombarded by electromagnetic radiation, solar wind electrons and ions, and highly energetic galactic cosmic rays.
		In a fundamental sense planetary geology relies on the progress of geochemical studies for the framework of its investigations.
	history.nasa.gov /SP-467/ch4.htm (5571 words)

	Planetary differentiation - Wikipedia, the free encyclopedia
		In planetary science, planetary differentiation is a process by which the denser portions of a planet will sink to the center; while less dense materials rise to the surface.
		In melted zones their heavier elements sank to the center; while lighter elements rose to the surface.
		Composition of some meteorites show that differentiation took place in some asteroids.
	en.wikipedia.org /wiki/Planetary_differentiation (646 words)

	planetary differentiation (Site not responding. Last check: 2007-10-20)
		planetary differentiation is one of the topics in focus at Global Oneness.
		In astrophysics and geology, a planetary core is the composite material at the centre of...
		Differentiation can mean the following: In biology: cellular differentiation; evolutionary differentiation; In mathematics: see: derivative In cosmogony: planetary differentiation Differentiation (geology); Differentiation (logic); Differentiation (psychotherapy); Differentiation (marketing).
	www.experiencefestival.com /planetary_differentiation (955 words)

	Planetary Processes Module 3 Part 1 Planetary Geology
		Planetary differentiation, therefore, refers to the processes that cause an essentially homogeneous accreted body that is made up of primordial solar material to become separated into layers having different chemical and/or physical properties.
		This is not considered a significant factor in bringing a planetary interior close to melting because the material involved would have to become partially melted for segregation to occur in the first place.
		When a magma is formed and injected into other regions of the planetary body (usually upward into overlying layers) heat is transferred by convection due to the mobility of the molten material.
	wapi.isu.edu /Geo_Pgt/Mod03_PlanetaryEvo/mod3_pt1.htm (2082 words)

	ch4
		Planetary atmospheres are mixtures of gases and aerosols retained by the planet's gravitational field.
		Planetary escape is a complex process (e.g., Hunten, 1973; Pollack and Yung, 1980) and may involve other mechanisms than blow-off or simple deans escape.
		From the point of view of planetary geology, one of the essential geochemical tasks is to test the extent to which current models of the formation and evolution of the solar system and of particular planets are supported by actual observations.
	www.hq.nasa.gov /pao/History/SP-467/ch4.htm (5571 words)

	Omnipelagos.com ~ article "Planetary differentiation" (Site not responding. Last check: 2007-10-20)
		In melted zones their heavier elementss sank to the center; while lighter elements rose to the surface.
		Composition of some meteorites show that differentiation took place in some asteroids.
		The Earth's Moon seems to have been formed out of material splashed into orbit by the impact of a large body into the early Earth.
	www.omnipelagos.com /entry?n=planetary_differentiation (631 words)

	Effects of melt density on magma mixing in calc-alkaline series lavas
		During differentiation of a basaltic parent there is an overall decrease in the density of derivative calc-alkaline liquids
		We emphasize that our mechanism may be limited to aphyric calc-alkaline suites similar to those found at Medicine Lake volcano, and we do not propose magma mixing as a general model for the origin of all andesites.
		Densities of residual liquids produced by differentiation of primary basaltic magmas at elevated pressures pass through a minimum, and many of the basalts and basaltic andesites in island arcs have compositions that coincide with this minimum.
	www.nature.com /nature/journal/v305/n5933/abs/305416a0.html (280 words)

	Our Solar System
		The Solar System is the end result of gravitational collapse (condensation of the molecular cloud), accretion (dust and molecules sticking together in a rotating cloud of material that is hotter in the center, cooler on the edges), and, for larger bodies, differentiation into layers of distinct composition.
		Rocks on planets and some moons were melted at least once as a result of planetary differnetiation and/or moon formation.
		Planetary rocks thus record Solar System events from the last phases of accretion to the present day.
	www.pitt.edu /~cejones/GeoImages/0PlanetaryFormation/SolarSystem/0SolarSystem.html (242 words)

	More on Planetary Science
		Here is free textual content related to Planetary Science to utilize on your web site in accordance wi th the GNU license.
		Planetary science, also known as planetology or planetary astronomy, is the science of planets and the solar system, and incorporates an interdisciplinary approach drawing from diverse sciences.
		Planetary science may be considered a part of the Earth sciences, or more logically, as its parent field.
	www.artilifes.com /planetary-science.htm (322 words)

	Urantia Book Paper 49 The Inhabited Worlds
		Regardless of personal or physical planetary differences, the mental life of all these various orders of mortals is very similar, and their immediate careers after death are very much alike.
		In the majority of cases planetary conditions had very little to do with the decisions of the Life Carriers to project these varied orders of mortals on the different worlds; it is a prerogative of the Life Carriers thus to plan and execute.
		The chief mission of a bestowal Son is to establish the planetary status, release the Spirit of Truth for planetary function, and thus effect the universal coming of the Thought Adjusters.
	oregonstate.edu /instruction/ims101/p49.html (5694 words)

	Planetary differentiation: Definition and Links by Encyclopedian.com
		Oak trees do not have acorns until they are fifty years old or older.
		Using Pb isotopic data determined on CAIs an age of 4567.2±0.6...Accretion and Differentiation 687-695, in Asterois III, Bottke W.F., Cellino A., Paolicchi...
		Due to planetary differentiation, such layers tend to be more dense than outer...
	www.encyclopedian.com /pl/Planetary-differentiation.html (171 words)

	Urantia Book, Paper 49: Section 2 -- Planetary Physical Types
		The physical differences of the worlds of mortal habitation are chiefly determined by the nature of the atmosphere; other influences which contribute to the planetary differentiation of life are relatively minor.
		These differentiations have to do with the relation of mortals to water, air, and land, and there are four distinct species of intelligent life as they are related to these habitats.
		The various planetary types of mortals vary in height, the average in Nebadon being a trifle under seven feet.
	www.theoquest.com /ubcenter/ubook/49-2.cfm (1059 words)

	SparkNotes: Jupiter: Jupiter's Interior
		Helium atoms are slowly finding their way down through Jupiter's interior, leaving the outer regions of the planet with a slightly higher ratio of hydrogen to helium abundance.
		The differentiation is also a source of heat, gravitational in nature.
		Electric currents on a planetary scale run through it, creating the strong magnetic field that we measure from Jupiter's orbit.
	www.sparknotes.com /astronomy/jupiter/section4.rhtml (618 words)

	Space Sciences
		By experimentally replicating the mineral assemblages and textures of natural materials in synthetic equivalents and by determining the stability of minerals, it is possible to formulate the sets of conditions appropriate for the origin and evolution of planetary crustal and meteoritic materials.
		We pursue hypervelocity meteorite impact as a geological process to learn about the accretion, differentiation, and the evolution of current, heavily cratered surfaces of planets and their moons, including the collisional evolution of small solar system objects.
		Experiments delineating the geochemical behaviors of chemical elements during planetary processes are important for understanding the elemental abundance patterns that are observed in planetary materials.
	www.isso.uh.edu /rfp_sg/ss.htm (3884 words)

	Jupiter's Moon Callisto - Explore the Cosmos \| The Planetary Society
		Callisto is believed to have a very primitive interior, in which its component ice and rock are mostly jumbled together, rather than being separated into layers as they are in nearly every other large body in the solar system.
		Callisto likely never got warm enough for the contrast in density between ice and rock to drive the differentiation of its interior.
		The dark dust would be relatively warmer than the bright icy peaks; sublimation near dust deposits would be enhanced, accelerating the process of peak erosion.
	www.planetary.org /explore/topics/Jupiter/callisto.html (293 words)

	Institute of Meteoritics Research Projects (Site not responding. Last check: 2007-10-20)
		The goal of our experiments is to mimic the conditions inside planetary bodies (mainly Earth, the Moon, and Mars) where processes took place that gave rise to igneous rocks.
		Work in the High Pressure Laboratory currently focuses on the differentiation of the martian mantle, deep-seated magmatism on the Moon, and the systematics of crystal-chemical controls on garnet-melt trace element partitioning in any terrestrial interior.
		Our lunar work largely involves phase-equilibrium and element-partitioning studies of lunar picritic glasses to determine whether garnet was present in their source regions, which would constrain the composition and physical state of the deep lunar interior.
	epswww.unm.edu /iom/Research_Activities.htm (1165 words)

	PSRD: Portales Valley meteorite
		A recent study of Portales Valley by Ruzicka and colleagues suggests that the textures, mineralogy, and chemistry of the meteorite are best explained as the first good example of a metallic melt breccia.
		This meteorite represents a transitional stage between chondrites and various classes of differentiated meteorites, and offers clues as to how differentiation occurred in early-formed planetary bodies.
		A detailed study of the Portales Valley meteorite suggests that differentiation of small planetary bodies involved a combination of an internal heat source and shock.
	www.psrd.hawaii.edu /Sept05/PortalesValley.html (3228 words)

	EPD2006 Second Announcement (Site not responding. Last check: 2007-10-20)
		The Workshop on Early Planetary Differentiation: A Multi-Planetary and Multi-Disciplinary Perspective will be held December 8–10, 2006, at the Doubletree Hotel Sonoma in Rohnert Park, California.
		Planetary differentiation is a fundamental early solar system process that in part dictates the evolutionary pathway followed by a planet.
		The last 15 years have seen a dramatic refinement of timescales over which differentiation occurred and an increase in the sophistication of our understanding of orbital dynamics, accretion, and mechanisms of the differentiation process.
	www.lpi.usra.edu /meetings/epd2006/epd2006.2nd.shtml (787 words)

	u43b in fm04
		However, differentiation processes allow materials to migrate and to become segregated, with direct consequences for the development of disequilibrium states.
		As an example, recently-formed melt in the upper mantle is far closer to equilibrium with its surroundings than is the resulting solidified basaltic lava at the surface.
		It follows that life continues the release of energy begun by planetary differentiation but stalled by sluggish oxidation/reduction reactions.
	www.agu.org /cgi-bin/SFgate/SFgate?&listenv=table&multiple=1&range=1&directget=1&application=fm04&database=/data/epubs/wais/indexes/fm04/fm04&maxhits=200&="U43B" (948 words)

Try your search on: Qwika (all wikis)