Cade Thueson
GOEG 1000-026
Instructor: Lauren Parker
10/28/2012
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Magnitude: 5.3
Location: Central California at 36.310°N, 120.856°W
Date/Time: Sunday, October 21, 2012 at 06:55:09 UTC
Depth/Focus: 9.2 km (5.7 miles)
Plate Boundary Type: Transform Fault
With this type of fault plates slipping past each other in opposite directions
laterally causing great friction and stress build up resulting in a earthquake
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Magnitude: 4.6
Location: 2.150°N, 92.447°E, off the west coast of N. Sumatra
Date/Time: Tuesday, October 23, 2012 19:11:52 UTC
Depth/Focus: 29.00 km (18.02 mi)
Plate Boundary: Oceanic-Oceanic Convergent
When two converging plates come together one sliding under the other
(subduction) causing a trench and earthquake.
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Magnitude: 6.5
Location: 10.121°N, 85.314°W, Costa Rica
Date/Time: Wednesday, October 24, 2012 00:45:34 UTC
Depth/Focus: 20.10 km (12.49mi)
Plate Boundary: Continental-Continental Convergence
When two continental plates converge together, causing great stress and
because the continental crust is to buoyant to subduct this type of
earthquake often forms large mountain ranges.
Magnitude: 5.2
Location: 8.169°S, 123.431°E, Flores region, Indonesia
Date/Time: Monday, October 29, 2012 06:28:33 UTC
Depth/Focus: 9.70 km (6.03 mi)
Plate Boundary: Oceanic-Continental Convergence
On this boundary the oceanic lithosphere subducts under the continental
lithosphere when they converge together causing the earthquake.
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Magnitude: 4.8
Location: 50.133°S, 113.885°E Southeast Indian Ridge
Date/Time: Thuesday, October 25, 2012 22:33:49 UTC
Focus/Depth: 9.10 km (5.65 mi)
Plate Boundary: Divergent
In this situation we are looking at mid-ocean ridge divergent boundary. What
happened here was a shallow focus earthquake. In the asthenosphere we
have upwelling of molten material along the mid-ocean ridge as it breaks
through the lithosphere it causes separation and the earthquake. Also
forming addition to the crust.