Lecture_4
Table of Contents
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Formation of Magma and Igneous Rocks
- Why study igneous rocks?
- Why study igneous rocks?
- 4.1 What are igneous processes?
- 4.1 What are igneous processes?
- 4.1 What are igneous processes?
- 4.1 What are igneous processes?
- 4.1 What are igneous processes?
- 4.1 What are igneous processes?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- Granite
- 4.2 How are igneous rocks classified?
- Rhyolite
- 4.2 How are igneous rocks classified?
- Obsidian
- Pumice
- 4.2 How are igneous rocks classified?
- Andesite porphyry
- 4.2 How are igneous rocks classified?
- Diorite
- 4.2 How are igneous rocks classified?
- Basalt
- 4.2 How are igneous rocks classified?
- Gabbro
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- 4.2 How are igneous rocks classified?
- Texture and composition
- 4.3 Where do igneous rocks appear in a landscape?
- Where they came from
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- 4.3 Where do igneous rocks appear in a landscape?
- Volcano Cross-sections
- 4.3 Where do igneous rocks appear in a landscape?
- 4.4 How and why do rocks melt?
- 4.4 How and why do rocks melt?
- 4.4 How and why do rocks melt?
- 4.4 How and why do rocks melt?
- 4.4 How and why do rocks melt?
- 4.4 How and why do rocks melt?
- 4.4 How and why do rocks melt?
- 4.4 How and why do rocks melt?
- 4.5 How do we know how magma is made?
- 4.5 How do we know how magma is made?
- 4.6 How does magma generation connect to plate tectonics?
- 4.6 How does magma generation connect to plate tectonics?
- 4.7 What makes igneous rock compositions so diverse?
- 4.7 What makes igneous rock compositions so diverse?
- Bowen's Reaction Series
- 4.7 What makes igneous rock compositions so diverse?
- 4.7 What makes igneous rock compositions so diverse?
- 4.7 What makes igneous rock compositions so diverse?
- 4.7 What makes igneous rock compositions so diverse?
- 4.8 Why are there different types of volcanoes and volcanic eruptions?
- 4.8 Why are there different types of volcanoes and volcanic eruptions?
- 4.8 Why are there different types of volcanoes and volcanic eruptions?
- 4.8 Why are there different types of volcanoes and volcanic eruptions?
- 4.8 Why are there different types of volcanoes and volcanic eruptions?
- 4.9 How are volcanoes hazardous?
- 4.9 How are volcanoes hazardous?
- 4.9 How are volcanoes hazardous?
- 4.9 How are volcanoes hazardous?
- 4.9 How are volcanoes hazardous?
- 4.9 How are volcanoes hazardous?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.10 Why don't all magmas erupt?
- 4.2 How are igneous rocks classified?
- Texture and composition
Text and Images from Slide
4.2 How are igneous rocks classified?
- Composition and texture are used to classify and name igneous rocks.
- Pyroclastic deposits are formed by volcanic explosion and are classified by fragment size and degree of consolidation.
- Ultramafic, mafic, intermediate, and felsic are compositional categories of magma/rocks.
- Rapid cooling leads to aphanitic rocks and slow cooling gives coarser, phaneritic rock. Porphyritic texture contains both.