Metamorphic rocks - chemistry GCSE

Metamorphic rocks.

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  • Created by: Ringo
  • Created on: 30-10-09 08:50
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Metamorphic Rocks
Table of Contents
1. Keywords and Definitions
2. Names
3. Processes
4. Features
5. Other
6. Uses
Keywords and Definitions
The following are common words that have to do with metamorphic rocks.
The action of weather on rocks causing them to break up.
The wearing away and smoothing of rocks as they are transported.
Matter that settles at the bottom of liquids.
The dropping of earth material being carried by water to form sediments.
Movement of material from one place to another.
Rock formed from deposition, burial, and cementation of sediments.
The ancient remains of a living thing that have left an impression in a rock.
A visual representation of the passage of time as a line.
The set of layers visible in many metamorphic rocks as a result of the flattening and
stretching of mineral grains during metamorphism.

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· Gneiss contains large mineral grains that are ordered into wide bands
It has thin layering in it made up of minerals
Marble contains coarse interlocking grains made of calcite. It isnt foliated, or split into
separate sheets. As it is found in medium/small grains, it was not formed
under very extreme conditions, unlike other types of metamorphic rock. It is
calcium carbonate.…read more

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· Slate is fine-grained, flat rock
Slate is a type of metamorphic rock that is foliated, and found in sheets. It derived
from a sedimentary rock that changed to slate through low grade metamorphism. It
is grey in color.
Contains tight, interlocking medium grains composed of quartz
There are various grades of metamorphisms to change sedimentary rocks to metamorphic.
How it is formed...
Diagenesis: Lower than 200 degrees.
Low grade metamorphism: 200-320 degrees.
Medium grade: 320-450.
High: 450-1000.…read more

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Metamorphic rocks are sometimes valued for the minerals found inside. The minerals
found in the metamorphic rock depends on its parent rock, but sometimes new minerals
may form in the metamorphic rock as ins move around.
Marble is used to make floor tiles, counter tops, and is carved into statues. It was
used extensively in the Ancient World to build great buildings like the Colosseum. It
is found in small or medium grains. Used primarily for architectural and monumental
purposes.…read more

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Processes…read more

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Metamorphic rocks
Question:- Describe how fossils are formed. State where in HK these rocks can
be found.
There are a lot of methods of how fossils are formed, the most common one is
once a animal or plant dies it falls to the ground, then it is covered by sediment.
This is often sediments brought from water. Fossils are formed from the remains
of plants or animals which have died and become buried in sediments before
they could decay.…read more

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lisa linsdell

Nice notes on the structure and uses of Metamorphic rocks. Includes a good question on the formation of fossils.  Have a go at answering it before scrolling up to see answer given.

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