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1.7 ROCKS AND THEIR USES

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1.7 ROCKS AND THEIR USES

Completa el texto sobre los apuntes de la unidad 1.7. Cuándo termines un texto y le des a comprobar te pasará al siguiente texto.

Gonzalo Alonso Leiro
1

highest bottom crust the oceans minerals of made part mountains earth

Minerals and rocks form . The ground we walk on , the and the of the are all of .

2

that ordere occurs structures definite solid crystal mineral naturally aggregates composition

Rocks are . A mineral is a and has a , and that are well

3

rocks mineral aggregates example crystal monomineralic

Rocks formed by of just one are called . An is marble .

4

sandstones conglomerates other rocks

Rocks made of fragments of are known as and .

5

criteria few key eye naked

To identify rocks with the , we need a based on a of :

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stripes fragments homogeneous factor acid appear heterogeneous small sheets crystals physical CO2 certain acid heterogeneous factor react rocks microscope see structure features

1 . Does it to be or ?
Appearance is a , but it would look under a .

2 . Is it made of or , or are they too to ?

3 . How does its look ?
Does it have , or other ?

4 . Does it with ?
Only react with . The determining is .

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conditions melted magmatic rocks solidifies water rocks magma cementation interior high effect Volcanic from sedimentary cools pressure transformation originated sediments process to Plutonic subjected wind temperatures reaching melting other transformed compaction rocks going

Types of rocks :

1 . Igneous or : These are when ( rocks ) Earth ? s and .
a . ( intrusive ) rocks .
b . ( extrusive ) rocks .

2 . Sedimentary . Because of the or , break in that are to be after a of and in .

3 . Metamorphic . Formed by the of and / or , without a state .

8

type through processes transformed slowly goes transform millions years processes rock different rock rock type into series

The rock cycle

The rock cycle is a of that a to another of .
Any rock can be into of . These occur very , over of .

9

Weathering changes change in chemical surface sediments agents fragmentation or erosion air transport ice water formed rocks fragmentation rocks minerals

Rocks change very slowly

( wind and water / rain ) . Can cause in the that the can the ( ) weathered materials ( ) travel in , the or in . This causes ( + ) .

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