prirodak - premenene horniny Flashcards

(18 cards)

1
Q

? premena

A

= metamorfoza –> soubor zmen, pri kterych vznikaji premenene horniny

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2
Q

co ovlivnuje premenu?

A

teplota (200 - 700C)
tlak
pritomnost roztoku
cas

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3
Q

druhy premen:

A

regionalni
kontaktni
sokove

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4
Q

? regionalni premena

A

vznika pri vrasneni
postihuje velke oblasti

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5
Q

? kontaktni premena

A

vznika ucinkem magmatu, ktere do nich pronika

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6
Q

? sokova premena

A

vznika pri dopadu meteoritu

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7
Q

druhy premenenych hornin:

A

fylit, svor, pararula, ortorula, mramor, migmatit

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8
Q

? fylit

A

vznika z jilovitych bridlic (t=200C)
slozeni: kremen, muskovit, zivec
svetle az tmavoseda az zelena barva

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9
Q

pouziti fylitu:

A

obklady, rekonstrukce strech

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10
Q

? svor

A

vznika z jilovitych bridlic za vyssi teploty a tlaku (400C)
slozeni: kremen, slida, popr. granat
svetla (svetle seda) velmi leskla hornina

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11
Q

pouziti svoru:

A

stavebnictvi

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12
Q

? pararula

A

vznika z jilovitych bridlic za vysoke teploty (600C) a tlaku
slozeni: kremen, zivec, slida, popr. granat
sedocerna

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13
Q

? ortorula

A

vznika z zuly (stavba vsesmerna –> rovnobezna)
slozeni: kremen, zivec, slida
svetle seda

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14
Q

pouziti ortoruly:

A

sterk, stavebni kamen

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15
Q

? mramor

A

krystalicky vapenec
vznika z vapence
slozeni: kalcit
bila, seda naruzovela hornina s tmavymi pruhy (uhli)

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16
Q

pouziti mramoru:

A

obklady, dekoracni kamen, vyroba vapna

17
Q

? migmatit

A

prechodna hornina mezi zulou a rulou
tvorena oddelenymi pasky tmavych a svetlych nerostu

18
Q

pouziti migmatitu:

A

sterk, dekoracni kamen