Thursday, December 1, 2011

South American Plate Boundary


Kelsey Hill, Lauren Ingham, Ally Hakeem, Katelin Mitchell


Type 1 is the purple line running down the middle of the oceanic plane. We discovered that this area has a higher elevation, making the earthquakes closer to the surface. The land here is younger and there aren't as many volcanoes.

Type 2 is the pink lines around the curve at the bottom and along the left side of the plate. In this area, the sea and land elevation is greatest. The earthquakes are very deep and there is a high concentration of volcanoes.

Type 3 is the yellow line along the bottom and top of the plate boundary. The earthquakes follow along this area, most of them being shallow. There was nothing significant about this area with any other map.


Transform and Divergent Boundary: Our Type 1 according to this map is both a Transform and Divergent plate boundary. This is the red and blue. This is where earthquakes and volcanoes were infrequent. The areas in which there is a Transform and Divergent plate boundary are the areas where there is new land forming and the elevation is the highest. Because of this, there are less volcanoes and the earthquakes follow along the boundary, but aren't as congested. Also these earthquakes are not as deep.


Here you can see that there is only one volcano exists in this whole area which agree with our type 1 observation that there are very few volcanoes.









This picture shows that there are earthquakes, but they are not nearly as frequent as they are in Convergent plate boundaries. The orange color of the earthquakes means that they are the most shallow in those areas. This agrees with our Type 1 observation that the earthquakes aren't as deep as they are in other areas.






Convergent Boundary: These next images show the Convergent boundaries in the South American plate. In Convergent boundaries, the two areas collide, so the land rises and the ocean becomes deeper. This proves why volcanoes are at their highest, the land is the oldest, and the ocean is deepest along these boundaries.

This picture shows the volcanoes along a Convergent boundary. This fits with our Type 2 because we observed that the volcanoes were more frequent along this line.
 We found this area interesting because this one curve showed to be a hot spot for volcanoes, which we later discovered to be a Convergent boundary, which means that there is more volcanic activity in this section. This also agrees with our Type 2 because we found the most activity in this region.
 This is another picture of the curve in our plate boundary, but this shows the earthquakes. It also goes with the definition of a Convergent boundary and our Type 2.
This is showing the several earthquakes of variant depths which is consistent with a Convergent boundary. This image is also consistent to our Type 2 definition.










Transform Boundary: This is in the areas where there is little activity because the plates are shifting close together. We have seen in some Transform boundaries that there is a lot of activity in both earthquakes and volcanoes, such as the San Andreas fault line. However, our Transform boundaries aren't as active so we do not have as many earthquakes and we have very little volcanoes.

This is looking at just the Transform boundary on the South American plate. This is the blue line on the map showing very little activity of volcanoes in this area. This agrees with our Type 3 that there is hardly anything happening in this region.







This picture is looking at the same Transform boundary, the blue line. We said in our Type 3 description that there were earthquakes along the boundary, but they weren't frequent, and this proves that observation.

1 comment: