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Lecture_4

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  1. Formation of Magma and Igneous Rocks
  2. Formation of Magma and Igneous Rocks
  3. Formation of Magma and Igneous Rocks
  4. Formation of Magma and Igneous Rocks
  5. Formation of Magma and Igneous Rocks
  6. Formation of Magma and Igneous Rocks
  7. Formation of Magma and Igneous Rocks
  8. Formation of Magma and Igneous Rocks
  9. Formation of Magma and Igneous Rocks
  10. Formation of Magma and Igneous Rocks
  11. Formation of Magma and Igneous Rocks
  12. Why study igneous rocks?
  13. Why study igneous rocks?
  14. 4.1 What are igneous processes?
  15. 4.1 What are igneous processes?
  16. 4.1 What are igneous processes?
  17. 4.1 What are igneous processes?
  18. 4.1 What are igneous processes?
  19. 4.1 What are igneous processes?
  20. 4.2 How are igneous rocks classified?
  21. 4.2 How are igneous rocks classified?
  22. 4.2 How are igneous rocks classified?
  23. 4.2 How are igneous rocks classified?
  24. 4.2 How are igneous rocks classified?
  25. 4.2 How are igneous rocks classified?
  26. 4.2 How are igneous rocks classified?
  27. 4.2 How are igneous rocks classified?
  28. 4.2 How are igneous rocks classified?
  29. 4.2 How are igneous rocks classified?
  30. Granite
  31. 4.2 How are igneous rocks classified?
  32. Rhyolite
  33. 4.2 How are igneous rocks classified?
  34. Obsidian
  35. Pumice
  36. 4.2 How are igneous rocks classified?
  37. Andesite porphyry
  38. 4.2 How are igneous rocks classified?
  39. Diorite
  40. 4.2 How are igneous rocks classified?
  41. Basalt
  42. 4.2 How are igneous rocks classified?
  43. Gabbro
  44. 4.2 How are igneous rocks classified?
  45. 4.2 How are igneous rocks classified?
  46. 4.2 How are igneous rocks classified?
  47. 4.2 How are igneous rocks classified?
  48. 4.2 How are igneous rocks classified?
  49. 4.2 How are igneous rocks classified?
  50. 4.2 How are igneous rocks classified?
  51. 4.2 How are igneous rocks classified?
  52. Texture and composition
  53. 4.3 Where do igneous rocks appear in a landscape?
  54. Where they came from
  55. 4.3 Where do igneous rocks appear in a landscape?
  56. 4.3 Where do igneous rocks appear in a landscape?
  57. 4.3 Where do igneous rocks appear in a landscape?
  58. 4.3 Where do igneous rocks appear in a landscape?
  59. 4.3 Where do igneous rocks appear in a landscape?
  60. 4.3 Where do igneous rocks appear in a landscape?
  61. 4.3 Where do igneous rocks appear in a landscape?
  62. 4.3 Where do igneous rocks appear in a landscape?
  63. 4.3 Where do igneous rocks appear in a landscape?
  64. 4.3 Where do igneous rocks appear in a landscape?
  65. 4.3 Where do igneous rocks appear in a landscape?
  66. 4.3 Where do igneous rocks appear in a landscape?
  67. 4.3 Where do igneous rocks appear in a landscape?
  68. 4.3 Where do igneous rocks appear in a landscape?
  69. 4.3 Where do igneous rocks appear in a landscape?
  70. 4.3 Where do igneous rocks appear in a landscape?
  71. 4.3 Where do igneous rocks appear in a landscape?
  72. 4.3 Where do igneous rocks appear in a landscape?
  73. 4.3 Where do igneous rocks appear in a landscape?
  74. 4.3 Where do igneous rocks appear in a landscape?
  75. 4.3 Where do igneous rocks appear in a landscape?
  76. 4.3 Where do igneous rocks appear in a landscape?
  77. Volcano Cross-sections
  78. 4.3 Where do igneous rocks appear in a landscape?
  79. 4.4 How and why do rocks melt?
  80. 4.4 How and why do rocks melt?
  81. 4.4 How and why do rocks melt?
  82. 4.4 How and why do rocks melt?
  83. 4.4 How and why do rocks melt?
  84. 4.4 How and why do rocks melt?
  85. 4.4 How and why do rocks melt?
  86. 4.4 How and why do rocks melt?
  87. 4.5 How do we know how magma is made?
  88. 4.5 How do we know how magma is made?
  89. 4.6 How does magma generation connect to plate tectonics?
  90. 4.6 How does magma generation connect to plate tectonics?
  91. 4.7 What makes igneous rock compositions so diverse?
  92. 4.7 What makes igneous rock compositions so diverse?
  93. Bowen's Reaction Series
  94. 4.7 What makes igneous rock compositions so diverse?
  95. 4.7 What makes igneous rock compositions so diverse?
  96. 4.7 What makes igneous rock compositions so diverse?
  97. 4.7 What makes igneous rock compositions so diverse?
  98. 4.8 Why are there different types of volcanoes and volcanic eruptions?
  99. 4.8 Why are there different types of volcanoes and volcanic eruptions?
  100. 4.8 Why are there different types of volcanoes and volcanic eruptions?
  101. 4.8 Why are there different types of volcanoes and volcanic eruptions?
  102. 4.8 Why are there different types of volcanoes and volcanic eruptions?
  103. 4.9 How are volcanoes hazardous?
  104. 4.9 How are volcanoes hazardous?
  105. 4.9 How are volcanoes hazardous?
  106. 4.9 How are volcanoes hazardous?
  107. 4.9 How are volcanoes hazardous?
  108. 4.9 How are volcanoes hazardous?
  109. 4.10 Why don't all magmas erupt?
  110. 4.10 Why don't all magmas erupt?
  111. 4.10 Why don't all magmas erupt?
  112. 4.10 Why don't all magmas erupt?
  113. 4.10 Why don't all magmas erupt?
  114. 4.10 Why don't all magmas erupt?
  115. 4.10 Why don't all magmas erupt?
  116. 4.10 Why don't all magmas erupt?
  117. 4.10 Why don't all magmas erupt?
  118. 4.10 Why don't all magmas erupt?
  119. 4.10 Why don't all magmas erupt?
  120. 4.2 How are igneous rocks classified?
  121. Texture and composition

Text and Images from Slide

4.3 Where do igneous rocks appear in a landscape?

Cinder cone volcano

Shield volcano

Cinder cone: small, made mainly of pyroclastics. Eruptive phases 1 to 20 years.

Shield volcano: vary in size, made of thin flows of basaltic lava. Long-lived eruptions. Low profile.

Types of volcanoes

Fig 4.14 (top)

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