Peridotite, which is composed almost entirely of dark silicate minerals and is believed to make up much of Earth’s upper mantle, has a comp?
Peridotite is ultramafic in composition and is dominated by the mineral olivine.
Rocks containing many dark silicate minerals and plagioclase feldspar have a _____ composition.?
c
Peridotite is composed almost entirely of dark silicate minerals. Its chemical composition is referred to as ______?
Ultramafic
Can someone tell me information about the earth?
Its the thrid planet from the star in our solar system. Its the only planet known to actively support life. Its mostly covered in water. Its has distinct land masses on its surface that are constantly moving around, under, and over eachother. It has one moon that is always showing only one side to it. You live on it!
What characteristic do many igneous rocks have?
1. Formed by the cooling and solidification of lava.2. Hard in nature3. Consists of crystals,hence, also called as crystalline rock4. Examples are Granite and Basalt. These rocks are formed inside as well as on the earth.5. Fossils are not present in this rock.6. Igneous rocks are of two types : a. Extrusive rocks b. Intrusive rocks - i Plutonic rocks ii Hypabyssal rock7. It is non porous rock
What is the difference between oceanic and continental crust?
Meet basalt:Image SourceBasalt is a dark dense rock that makes up the oceanic crust. It is composed of silicon, oxygen and magnesium. At 3 grams per cubic centimeter, basalt is not much more dense than the mantle of which it floats, and therefore is relatively thin at 5 to 10 km (3–6 miles) deep. Any thicker and it would tend to settle deeper into the mantle and the bottom melts.Meet granite:Image SourceMost of the continental shelf is made of granite, a light coloured stone comprised mainly of silicon, aluminum, and oxygen. At 2.6 grams per cubic centimeter, it is less dense than basalt, and therefore floats higher on the mantle. It ranges in thickness from 35 km to as much as 70 km (20–40 miles) in some of its mountainous areas.Image SourceBecause of their relative densities, the oceanic crusts tend to be the plates that are subducted (sinking) where plates meet. This results in much younger oceanic crusts, as they tend to get recycled, while the continental crusts remain buoyant. The continental crusts are much older than the oceanic crusts.Difference Between Oceanic and Continental Crust
Gemstones: What is the difference between a Topaz and Citrine? Is Topaz more valuable?
Derived from French word Citrine meaning yellow, Citrine is the only member of quartz family which is bestowed with extreme clarity. All gemstone lovers probably know a lot about gemstone beads but you will not know much about the citrine gemstone beads. Citrine is a joyful stone with bright energy which lights up many aspects of lives of those who work with it. It has energies of good fortune and good luck, though these may appear in unexpected ways. The hardness of stone measures 7.5 on Mohs scale which makes its scratch resistant. In earlier days it was regarded as stone protecting the user from the impact of plague, skin diseases and worst effects of evil spirits.Topaz is a fairly common and inexpensive gemstone.The deep golden yellow (Imperial Topaz) does not only have the beauty that is needed to make gorgeous jewelry but it also has some healing and metaphysical properties associated with it. Imperial Topaz is the gemstone that encourages self-realization, confidence, imparts strength to quiet emotions, bestows charisma on the wearer and protects against envy, disease, negative magic and sudden or untimely death.
For Earth Science (9th grade), I need to know everything about the Black Canyon of Gunnison.?
If your teacher (maybe) and librarian don't like wikipoedia but you can't find any other good sites for the info, you haven't looked very hard. There is a box on this page entitled 'search the web'. All you have to do is type Black Canyon of Gunnison into that slot, hit the 'enter' button and you'll be knee deep in information. The reason your teacher (maybe) and librarian don't like wikipedia is because it is an unreliable source of information. It is made up of 'facts' that people put on the internet, which may or may not be genuine.
How can we combat climate change?
The first and foremost step is to make people aware of their responsibilities towards environment.Climate change is basically due to people's misconception and less Awareness towards the environment. Because the world has already number of problems, no doubt climate change is its self major problem. But it's effect has not been that dominant to our daily life style. We can easily avail to our basic needs and energy source.When climate change will begin to affect our daily life (though many parts around the world has started to experience) then the people automatically become aware of it. But it would be too late then. It might be so dangerous.As the famous saying prevention is better than cure. we should start from right now and this point of time to preserve our energy sources. Remember climate change is most urgent issue that threats from all the human beings to entire species. Each and every one must understand this and make their own life problem and they should worry about future generations, for their energy sources.Remember this solution I suggested is beginning (first step) not end.Hope it helps!