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
4.3 Where do igneous rocks appear in a landscape?
- General Features
- Opening at the summit of a volcano
- Crater - steep-walled depression at the summit, generally less than 1 km in diameter
- Caldera - a summit depression typically greater than 1 km in diameter, produced by collapse following a massive eruption. Caused by withdrawal of magma from the chamber underneath. When this happens, the weight of the volcano above the empty chamber causes collapse.
- Vent - opening connected to the magma chamber via a pipe