Divergent boundaries occur when tectonic plates move apart, leading to the formation of new crust. This example focuses on the Mid-Atlantic Ridge, where the Eurasian and North American plates are separating.
Distance from Ridge (km) | Depth (m) |
---|---|
0 | 2500 |
10 | 2600 |
20 | 2700 |
30 | 2800 |
40 | 2900 |
50 | 3000 |
60 | 3100 |
70 | 3200 |
80 | 3300 |
90 | 3400 |
100 | 3500 |
The collected data shows a consistent increase in depth as you move away from the ridge, indicating the formation of new oceanic crust at the divergent boundary. This supports the theory of seafloor spreading.
Convergent boundaries occur when tectonic plates collide, resulting in mountain formation or subduction. This example examines the collision between the Indian and Eurasian plates, which formed the Himalayas.
Elevation (m) | Rock Type | Estimated Age (Million Years) |
---|---|---|
8848 (Summit) | Metamorphic | 30 |
8000 | Sedimentary | 50 |
6000 | Igneous | 70 |
4000 | Sedimentary | 100 |
2000 | Metamorphic | 120 |
The data suggests that different rock types are present at varying elevations, indicating the complex geological processes involved in the convergence of the Indian and Eurasian plates. The age of the rocks increases with elevation, supporting the idea of tectonic uplift over millions of years.
These examples illustrate the different types of tectonic plate movements and their geological implications. By examining divergent and convergent boundaries, students can better understand the dynamic nature of Earth’s lithosphere. Utilize these templates as a guide for your own geology lab reports on tectonic activities.