Presentation is loading. Please wait.

Presentation is loading. Please wait.

ROCKS Are classified according to the environment in which they _________ form.

Similar presentations


Presentation on theme: "ROCKS Are classified according to the environment in which they _________ form."— Presentation transcript:

1

2 ROCKS

3 Are classified according to the environment in which they _________ form

4 Types of Rocks: ________ ________ ________ sedimentary igneous metamorphic

5 IGNEOUS ROCKS

6 Where Does Igneous Rock Form?

7 I. FORMATION OF IGNEOUS ROCKS

8 A. Igneous rocks form directly from the _____________ and _____________ solidification crystallization

9 of _____molten rock to form _______ rock solid liquid

10 FOUNTAINING

11 FISSURE ERUPTION

12

13 LAVA FLOW

14

15 LAVA FLOW OVER A ROAD

16 LAVA FLOW THROUGH FORREST

17 Kilauea, HI 2003

18 Kilauea, HI, 2003

19

20 Mt. ST. Helens

21 Volcanic crater

22 crazy vulcanist

23 SKY LIGHT

24

25

26

27

28

29

30 B. _____________ is the process when a liquid rock cools, crystallization

31 changes and it changes to a solid made of ________ ___________ INTERGROWN CRYSTALS INTERGROWN CRYSTALS

32

33 GRANITE MICROSCOPIC VIEW

34 2. CLASSIFICATION OF IGNEOUS ROCKS:

35 A. 2 characteristics that are used to classify igneous rocks:

36 1. ______________ 2. ______________ 1. ______________ 2. ______________ texture mineral composition mineral composition

37

38 B. Texture of an igneous rock describes the

39 _________, __________ and ____________ of the mineral crystals it was made from. size shape arrangement

40 C. The ______ of the crystals depends on the _____________ __________ size Rate of cooling

41 Slow cooling = ____________ large crystals

42

43 MINERAL CRYSTALS

44 GABBRO

45 Fast cooling = ____________ fine crystals Or no crystals (glassy) Or no crystals (glassy)

46 GLASSY TEXTURE: OBSIDIAN

47 BASALT: FINE CRYSTALS

48 BASALT MICROSCOPIC VIEW

49 Granite: Coarse crystals Basalt: Fine crystals (Microscopic views)

50 FINE CRYSTAL: RYOLITE

51 3. EXTRUSIVE IGNEOUS ROCKS: A. _____________ occurs when molten (liquid) rock flows out of the earth as ________________ A. _____________ occurs when molten (liquid) rock flows out of the earth as ________________ Extrusions lava

52 magma

53 And cools __________ quickly

54 to form fine or no ____________ to form fine or no ____________ crystals

55 gas pockets Vesicular basalt

56 This rock if full of gas pockets frothy texture (vesicular)

57 B. To form magma, ____________ must be melted. B. To form magma, ____________ must be melted. minerals

58 C. Minerals melt at different ____________ and ___________ C. Minerals melt at different ____________ and ___________ temperatures pressures

59 D. Igneous rocks of different ____________ D. Igneous rocks of different ____________ composition

60 Can form from the same body of ____________ Can form from the same body of ____________ magma

61 4. INTRUSIVE IGNEOUS ROCKS: A. _____________ occurs when molten rock beneath the surface A. _____________ occurs when molten rock beneath the surface Intrusions (magma)

62 cools ____________ to form _____________ cools ____________ to form _____________ slowly coarse crystals

63 Granite: Coarse crystals Basalt: Fine crystals (Microscopic views)

64

65 5. FELSIC A. Igneous rocks of the continental crust are rich in _________ density _________ colored minerals A. Igneous rocks of the continental crust are rich in _________ density _________ colored minerals low light (granitic)

66 6. MAFIC A. Igneous rocks of the ocean floor are rich in _________ density _________ colored minerals A. Igneous rocks of the ocean floor are rich in _________ density _________ colored minerals high dark (basaltic)

67

68 Comparing Oceanic Crust To Continental Crust

69 Continental Crust: Continental Crust: low density light color felsic granitic thick

70 Oceanic Crust : Oceanic Crust : high density dark color mafic basaltic thin

71 Complete the Activity Use this diagram in your ESRT to answer the following: What is the temperature for the interface between the following… inner core and outer core? 6250° C Outer core and stiffer mantle? 5000° C Stiffer Mantle and athenosphere? 2600° C Asthenosphere and lithosphere? 750° C Use this diagram in your ESRT to answer the following: What is the temperature for the interface between the following… inner core and outer core? 6250° C Outer core and stiffer mantle? 5000° C Stiffer Mantle and athenosphere? 2600° C Asthenosphere and lithosphere? 750° C

72 What is the depth of the interface between the stiffer mantle and the outer core? 2900 KM State the relationship between depth and pressure :As depth increase pressure increases State the relationship between depth and temperature: As depth increases temperature increases What is the depth of the interface between the stiffer mantle and the outer core? 2900 KM State the relationship between depth and pressure :As depth increase pressure increases State the relationship between depth and temperature: As depth increases temperature increases

73

74 MELTING ROCKS AND CRYSTALLIZING MAGMA Rock magma magma rock When rocks melt, bonds broken. Crystalline solid no longer exists.

75 MELTING ROCKS AND CRYSTALLIZING MAGMA Rock magma magma rock Hot liquid contains still solid fragments Minerals melt at different temperatures Melting causes changes in magma composition

76 MELTING ROCKS AND CRYSTALLIZING MAGMA Rock magma magma rock Cooling of hot liquid allows crystallization of minerals Bonds are re-established Crystalline structure grows until edges touch adjacent crystals Minerals crystallize at different temperatures

77 OK……….. TAKE OUT YOUR REFERENCE TABLE

78


Download ppt "ROCKS Are classified according to the environment in which they _________ form."

Similar presentations


Ads by Google