Download Plate Boundary: Oceanic-Continental

Mollie McCann
NIAS REGION, INDONESIA
Magnitude: 5.3
Location: 0.864°N, 98.838°E
Date: Monday, February 7, 2011
Time: 03:07:38 PM at epicenter
Depth: 82.8 km (51.5 miles) set by location program
Type: Ocean-Continental because it sits on the edge of the land where it meets the water
Myanmar, Burma
Magnitude: 4.4
Location: 20.007°N, 95.316°E
Date: Monday, February 28, 2011
Time: 07:25:04 AM at epicenter
Depth: 112.3 km (69.8 miles)
Type: continental-continental because it is located in Asia where you can see the white line
indicating the continental convergence.
Off the coast of Oregon
Magnitude: 4.7
Location:
Date: Tuesday, February 8, 2011
Time: 10:44:36 PM at epicenter
Depth: 10.2 km (6.3 miles)
Type: Oceanic Transform because it sits on the fault and is a strike slip earthquake
ANDREANOF ISLANDS, ALEUTIAN IS., ALASKA
Magnitude: 4.0
Location: 50.163°N, 179.280°W
Date: Saturday, February 12, 2011
Time:04:08:09 PM at epicenter
Depth: 32.2 km (20.0 miles)
Type: Oceanic-Oceanic, it lies in the ocean
MARIANA ISLANDS REGION
Magnitude: 4.4
Date: Friday, February 11, 2011
Location: 21.572°N, 143.078°E
Time: 07:06:04 PM at epicenter
Depth: 295 km (183.3 miles)
Type: Divergent
Volcanoes
Name: Sanbe
Type: Caldera
Plate Boundary: Oceanic-Continental
Name: Marsabit
Type: Shield Volcano
Plate boundary: Oceanic-Continental
Name: Isla Tortuga
Type: Cinder Cone
Plate Boundary: Oceanic-Continental
Name: Tarso Voon
Type: Composite or Stratovolcano
Plate Boundary: Oceanic-Continental
Volcanoes and earthquakes are both directly connected to plate tectonics. Many earthquakes
and volcanoes are located on or near plate boundaries. To expand on, earthquakes can occur
on three different types: convergent, divergent, and transform plate boundaries. The earth’s
crust and even the inside of the earth are moving. This movement causes the plates to push
against each other or pull away which causes much pressure and results to the different types
of faults; or in the case of volcanoes, results in spreading or sinking. When the plates spread or
sink it causes melting, that creates molten rock. When this molten rock is beneath earth’s
surface it is called magma and it moves around while underneath the crust until eruption.
When two tectonic plates collide the denser plate submerges under the continental crust. This
causes the production of subduction zones where many of these natural disasters are found.
Earthquakes occur along faults, where the crust is weak and can’t withstand the pressure.
The spatial relationship between volcanoes and earthquakes is they occur really close to each
other. Most of them can be found along plate boundaries such as the Ring of Fire. When using
Google Maps you will see many of the dots right in a row of each other. Also, while using
Google maps, it has lines of different colors showing you what kind of boundary it lies on.
There was so much I have learned from studying earthquakes and volcanoes. One of the biggest
things I have learned was how often earthquakes happen and how many volcanoes there are. I
honestly had no idea until I used Google Maps and saw all of them. Many of the earthquakes
aren’t felt but there are still so many happening. I also was reminded of the different types of
faults there are. There is the strike-slip, reverse, and normal fault. I now know that the Wasatch
Front is a normal fault. I also learned about the different types of volcanoes and how they erupt
differently. This includes how powerful their explosions are which depends on the viscosity and
that there are two different types of lava: aa or pahoehoe. I have always considered volcanoes
were bad because of the injuries or deaths involved and the property that is destroyed.
However, I have learned there is a plus sign to having them because volcanoes are good for
agriculture, geothermal hotsprings, and geothermal power potential.