Lecture 13
Table of Contents
- Tectonics and Surface Relief
- Why study surface relief?
- Why study surface relief?
- Why study surface relief?
- Why study surface relief?
- Why study surface relief?
- Why study surface relief?
- Why study surface relief?
- Why study surface relief?
- Above and Below sea level
- 13.1 Why are continents high and oceans low?
- 13.1 Why are continents high and oceans low?
- 13.1 Why are continents high and oceans low?
- 13.1 Why are continents high and oceans low?
- 13.1 Why are continents high and oceans low?
- 13.1 Why are continents high and oceans low?
- 13.1 Why are continents high and oceans low?
- 13.1 Why are continents high and oceans low?
- 13.2 How do we know ... that mountains have roots?
- 13.2 How do we know ... that mountains have roots?
- 13.2 How do we know ... that mountains have roots?
- 13.2 How do we know ... that mountains have roots?
- 13.3 How does isostasy relate to active geologic processes?
- 13.3 How does isostasy relate to active geologic processes?
- 13.3 How does isostasy relate to active geologic processes?
- 13.3 How does isostasy relate to active geologic processes?
- 13.3 How does isostasy relate to active geologic processes?
- Glacial Isostasy
- 13.3 How does isostasy relate to active geologic processes?
- 13.3 How does isostasy relate to active geologic processes?
- 13.3 How does isostasy relate to active geologic processes?
- 13.3 How does isostasy relate to active geologic processes?
- 13.4 Why does sea level change?
- 13.4 Why does sea level change?
- 13.4 Why does sea level change?
- 13.4 Why does sea level change?
- 13.4 Why does sea level change?
- 13.4 Why does sea level change?
- 13.5 How and where do mountains form?
- 13.5 How and where do mountains form?
- 13.5 How and where do mountains form?
- 13.5 How and where do mountains form?
- 13.5 How and where do mountains form?
- 13.5 How and where do mountains form?
- 13.5 How and where do mountains form?
- 13.6 How does mountain building relate to the growth of continents?
- 13.6 How does mountain building relate to the growth of continents?
- Non-Subductable Crust
- Non-Subductable Crust 2
- 13.6 How does mountain building relate to the growth of continents?
- 13.6 How does mountain building relate to the growth of continents?
- 13.6 How does mountain building relate to the growth of continents?
- Provinces of North America
- 13.6 How does mountain building relate to the growth of continents?
- 13.6 How does mountain building relate to the growth of continents?
- 13.6 How does mountain building relate to the growth of continents?
- Island Arcs
- 13.6 How does mountain building relate to the growth of continents?
Text and Images from Slide
- Isostasy explains why ocean depth correlates with seafloor age. The older the lithosphere, the greater its weight, and the lower its surface elevation.
- Sea-level changes are explained either by changing the volume of seawater or by changing the shape of the ocean basins.
- Plate tectonics affects global sea level through changes in lithosphere age. When the average age decreases, sea level increases, causing oceans to spill onto the continents.
13.4 Why does sea level change?