|
In geology, a crust is the outermost solid shell of a rocky planet or moon, which is chemically distinct from the underlying mantle. The crusts of Earth, our Moon, Mercury, Venus, Mars, Io, and other planetary bodies have been generated largely by igneous processes, and these crusts are richer in incompatible elements than their respective mantles. From Wikipedia under the
GNU Free Documentation License  nps.gov 185px x 250px | 9.20kB [source page] ups that came from the tension fracture in the top of a pressure ridge Bottom squeeze up that looks like a candy kiss that oozed up through the a crack in the crust of a lava pond Figure 12 Pressure Plateau on south side of Broken Top lower right Also note slumping and open fissures on side of cone Most of the lava flows in the Monument are pahoehoe and were From Yahoo Image Search: "Crust (geology)"  bakercityherald.com unknown Fri, 22 Jan 2010 16:16:58 GM Fortunately for us, the quake-producing cracks in the Earth’s . crust. (. geologists. call them “faults”) that helped create our valley have been tranquil for a while. How long.  masonscience.wordpress.com Mr. Mason Fri, 05 Feb 2010 04:33:15 GM Cutting the earth we would see: 1) a very thin . crust. on the outside, 2) a core of significant size in the center, and 3) most of the mass of the Earth contained in the mantle. Earth's . Crust. : There are two different types of . crust. : thin ...  geologyofindia.blogspot.com subbu Sun, 27 Dec 2009 12:10:00 GM The continental . crust. is the layer of granitic, sedimentary and metamorphic rocks which form the continents and the areas of shallow seabed close to their shores, known as continental shelves. It is less dense than the material of the ... From Google Blog Search: "Crust (geology)"  dissidentvoice.org Sat, 19 Jun 2010 15:44:37 GMT+00:00 Dissident Voice One can easily imagine how the entire balance of the undersea ecosystem and sub-seafloor geology can be irrevocably affected by the relentless intrusions ...  independent.co.uk Fri, 18 Jun 2010 23:02:54 GMT+00:00 Independent ... eruption of gas-powered subterranean ooze, once again from a drilling operation that penetrated poorly known geology with inadequate safeguards. ...  beforeitsnews.com Sat, 05 Jun 2010 06:14:42 GMT+00:00 Before It's News The US government tested nuclear bombs there for four decades, and a crack in the Earth's crust known as the Gravity Fault connects its aquifer with Ash ... From Google News Search: "Crust (geology)" I need someone That is well educated in the field of Geology to answer this please? Q. what are the fundamental differences between continental crust and oceanic crust? Asked by Chad R - Sun Nov 9 22:00:59 2008 - - 3 Answers - 0 Comments A. Continental crust - SG 2.7 - 2.9 - 30-70 km thick - felsic to intermediate igneous rocks - enriched in lithophile elements oceanic crust - SG 2.8-3.1 - 10-40 km thick - mafic to ultramafic rocks (mostly basalt) - enriched in siderophile elements Correction to Stevie - There is no difference in age, although the very oldest rocks (>2 BY) are probably not technically continental crust. The oldest rocks in the world found to date are in Quebec, Canada, and have been dated at just over 4 BY. Answered by georock1959 - Sun Nov 9 23:15:24 2008 Can we really more than speculate on how the earths rocks were formed? Q. At a party I was talking to a geology Lecturer. He joked about the very idea of people in igneous geography having any firm or realistic idea about what happened thousands of years ago miles beneath the earth's crust.Do people like Ken Ham or Richard Dawkins lack an essential humility, and are their beliefs a little absurd?Is intelligent Design a more honest-humble concept??? Asked by jamesduck - Fri Sep 5 16:36:36 2008 - - 1 Answers - 0 Comments A. No, there beliefs are not absurd, and they are not being arrogant. They are simply stating what scientific instruments and observation are telling us. Some people just don't want to believe what science is presenting to us. The instruments used in measuring and the techniques used in interpreting the huge amount of evidence gathered over many years by unbiased scientists are proven beyond doubt. They use the same science that produces electricity, mobile phones, x-ray machines, cars, televisions, aeroplanes and so on . We do not know in detail what happened in the past , in history you never can, but we have a pretty good idea of the outline. Once intelligent design is introduced, you can forget science which requires facts and theories… [cont.] Answered by ANDREW A - Fri Sep 5 17:25:49 2008 geology question!?
Q. relate the composition of earth's crust to be locations of the ocean. Why the oceans where they are and why oceans eventually appear in rift zones? Asked by Tamana T - Wed May 7 16:38:10 2008 - - 1 Answers - 0 Comments A. I would like to suggest You should be able to find the answers there. You have asked about 2 chapters worth of question!! Answered by Rocknocker - Wed May 7 17:01:59 2008 From Yahoo Answer Search: "Crust (geology)" |
