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What type of rock has light and dark layers - Answers

www.answers.com/Q/What_type_of_rock_has_light_and_dark_layers

A rock has alternating layers of dark and light colors the rock has visible quartz crystals and .... What rock has parallel bands of dark and light mineral grains?

Metamorphic Rock Classification - faculty at Chemeketa

faculty.chemeketa.edu/afrank1/rocks/metamorphic/metaclass.htm

Foliation refers to flat or wavy planar features (looking like layers) caused by the ... Foliation may also look like alternating bands of light and dark minerals. In contrast, a nonfoliated rock has interlocking grains with no specific pattern. Foliated ...

Rock Key

www.minsocam.org/msa/collectors_corner/id/rock_key.htm

If there are a lot of pebbles mixed with the sand, it is called gravel. .... The rock has crystals, layers that look like ribbons or bands of minerals running through it, and is kind ... Is the rock mostly light or medium gray, not very dark gray or black?

Chapter 4 Rocks and Minerals - Volcano World

volcano.oregonstate.edu/book/export/html/196

This layer of rock extends down to 40 miles from the surface of the earth. Rock Lesson - ... The lava has cooled and is now a volcanic rock called basalt. .... Biotite mica is dark green to black in color because it contains iron, magnesium. Mica is mined in ... Some minerals sparkle in the light while others are dull and boring!

Metamorphic Rocks

darkwing.uoregon.edu/~drt/Classes/201_99/Rice/Metamorphic.html

Metamorphic rocks are consequently rocks that have undergone a change or ... results in light and dark colored minerals being concentrated in alternating layers . ... If these mica minerals grow during deformation, they will be aligned with their ... Each of these minerals has the same chemical composition (Al2 SiO5 ), but ...

Rock Cycle & Rock Structure Lesson Plan - Half a Hundred Acre Wood

www.halfahundredacrewood.com/wp-content/uploads/2016/03/HHAW-Rock-Cycle-Structure-Lesson.pdf

INtrusive igneous rock which has visible crystals because it cooled over a long ... A rock may be sedimentary if small particles can be rubbed off as grains/ ... Layers? Foliated Metamorphic Rocks: Alternating bands of light and dark colored .

Metamorphic Rocks

www.appstate.edu/~marshallst/GLY1101/lectures/8-Metamorphic_Rocks.pdf

James Hutton, a Scottish doctor became fascinated by metamorphic rocks and published .... has properties of both a gas and a liquid. Supercritical ... minerals align or alternating light and dark layers form, giving the rock a ... Distinguished based on composition, but may be foliated if subjected to ... form compositional bands.

Metamorphic Rocks

www.saddleback.edu/faculty/jrepka/notes/GEOmetrocksLAB.pdf

Distinguish between foliated and non-foliated metamorphic rocks. • Distinguish between ... and the formation of bands or layers of like minerals. METAMORPHIC  ...

What Is This And Why All The Layers ? - Naked Science Forum

www.thenakedscientists.com/forum/index.php?topic=16827.0

The folding of the layers makes it obvious that the rock has been subjected to ... the minerals begin to segregate into bands of light and dark material. .... the box would not exist if it were sedimentary in origin or petrified wood.

Metamorphic Rocks

www.columbia.edu/~vjd1/meta_rx.htm

The light and dark bands (gneissic banding) are alternations of felsic vs. mafic layers. Slate is a product of low grade metamorphism (not terribly great burial ...

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if a rock has bands of light and dark layers it is? - OpenStudy

openstudy.com

Well, metamorphic rocks are rocks that have been pressed together over time underground. So, in that rock, you will see layers. I believe that the answer is ...

Foliated Metamorphic Rocks | Mineralogy4Kids

www.mineralogy4kids.org

Foliated metamorphic rocks are formed within the Earth's interior under extremely ... crystals are larger with the grains aligned in parallel to subparallel layers ... and pressures; coarse grained texture of alternating light and dark mineral bands .

Rock and Mineral identification flashcards | Quizlet

quizlet.com

You must say if you are a teacher. ... (dark rocks) Extrusive Igneous Rock Color: black or dark. Streak: Layers: ... Color: always going to be grey (light or dark) ... Other: sometimes has bands (stripes) of different colored minerals caused by the  ...