[DOC] [TLE] The Earth's Layers Lesson #1 [PAR] Because of this, the crust is made of the lightest materials (rock- basalts and ... 
The seven continents and ocean plates basically float across the mantle which is 
composed of much hotter ... The continental crust is composed mostly of granite. [DOC] [TLE] crust - National Geographic Society [PAR] May 29, 2015 ... Earth's crust is made of young oceanic material and older, thicker continental 
material. ... Beneath the crust is the mantle, which is also mostly solid rocks and 
minerals, but ... coal, Earth's crust is composed of igneous, metamorphic, and 
sedimentary rocks. .... thick layer of Earth that sits beneath continents. [DOC] [TLE] What type of rock makes up the continental crust? | Reference.com [PAR] What is the main type of rock in the oceanic crust? ... The continental crust floats 
above the Earth's mantle, as it is made up of a less dense material. The 
continental crust is also less dense than the oceanic crust, which is primarily 
made of basalt. ... Both the Oceanic and Continental Crusts Are Partially 
Composed of This... [DOC] [TLE] CHAPTER 10 - STUDY GUIDE - Physical Geography [PAR] Three main types of rocks can be identified on the Earth's surface: igneous, .... 
The outer most layer is called the crust and it sits on top of the mantle. ... One 
interesting property of the crust is that it has the ability to float up and down. ... On 
average of oceanic crust is 7 km thick and mainly composed of the igneous rock 
basalt. [DOC] [TLE] Continental Margin - The shape of the land, Forces and changes ... [PAR] Continental crust is composed mostly of granite, whereas oceanic crust is mostly 
basalt. (Although they differ in composition, both are types of igneous rock, which 
forms when ... Mantle: The thick, dense layer of rock that lies beneath Earth's 
crust. ... The geologic theory that Earth's crust is composed of rigid plates that "
float"... [DOC] [TLE] Earth's Internal Layers: Crust, Mantle & Core - Video & Lesson ... [PAR] Earth is made up of several different layers, each with unique properties. ... Like 
the core, the mantle contains mostly iron, but in the form of silicate rocks. ... not 
flow like the asthenosphere but instead floats on top of it like ice on a pond. ... but 
it's made up of rock that is less dense than the oceanic crust, so it sits on top of it,
... [DOC] [TLE] Balagtasan Essay Example | Topics, Sample Papers & Articles ... [PAR] The Dynamic Crust, Earthquakes and the Earth's Interior Why is the Earth's crust 
described as. ... Since the upper mantle acts like a very dense fluid, the crustal 
plates float on top of it. .... The oceanic crust is composed mainly of mafic igneous 
rock like basalt that is high in density. Interior Structure. Crust sits on top of mantle
. [DOC] [TLE] Rocks and Minerals Vocabulary.docx - Clarence Central School ... [PAR] Igneous rocks are formed from hot, melted rock either inside earth (magma) or ... 
Continental crust is an average of about 5-25 miles thick, while oceanic crust .... 
Surface and crust: The Earth's surface is composed mostly of water, basalt and 
granite. ... The lithosphere is defined as the crust and the upper mantle, a rigid 
layer... [DOC] [TLE] Earth's crust | geology | Britannica.com [PAR] Earth is composed of three layers: the crust, the mantle, and the core .... granitic 
rock, while composition of the oceanic crust corresponds mainly to that of basalt 
and gabbro. ... Igneous and metamorphic rocks constitute the bulk of the crust. .... 
and continentalwhich float on the surface of the Earth's mantle, diverging,... [DOC] [TLE] Igneous Rocks - Tulane University [PAR] Sep 3, 2015 ... Volcanic or extrusive igneous rocks form when the magma cools ... Gases - At 
depth in the Earth nearly all magmas contain gas. ... The outer core is mostly Iron, 
but magmas are silicate liquids. ... Upwelling mantle appears to occur beneath

Question: The ocean crust sits or floats on the Earth's mantle & is composed mainly of this igneous rock
Answer: basalt