What happens in a Divergent Plate Boundary?
Plates move away from each other due to the rising convection currents and lateral magma flow. The magma fills in the gap, cools down and creates new crust
A type of stress that occurs in a convergent plate boundary
Compressive Stress
What type of plate convergence is associated with this geological feature?
Oceanic-Oceanic Convergence
What type of boundary is involved in the Philippine Archipelago and how does it affect the country?
Convergent Plate Boundary - active fault zones and volcanism
What geologic feature is associated with a Transform Plate Boundary?
Fracture Zones
A type of boundary that results to the upwelling of hot material that further turns into a new seafloor
Divergent Plate Boundary
What is this geologic feature and what plate boundary is involved?
Mid-ocean Ridge - Divergent Plate Boundary (Oceanic-Oceanic)
A type of boundary that can result to the oceanic lithosphere descending beneath an overriding plate and eventually to be reabsorbed into the mantle
Convergent Plate Boundary
A boundary between two continental blocks that create a mountain belt
Convergent Plate Boundary
Give at least 2 geologic features associated with Convergent Plate Boundaries
(1) Deep-Ocean Trenches (2) Mountain Ranges (3) Volcanic Arcs and (4) Volcanic Island Arcs
What type of plate boundary cannot produce or destroy the lithosphere?
Transform Plate Boundary
What are the three variations of convergent zones based on the type of crustal material involved and tectonic setting?
(1) Oceanic-Continental, (2) Oceanic-Oceanic and (3) Continental-Continental
What happens in Oceanic-Oceanic Convergence?
The old oceanic plate subducts under the young oceanic plate. magma is formed and begins to rise to the surface as it sinks.
A type of stress that occurs in a Transform Plate Boundary
Shear Stress
Give ONE real life example of a Geological Feature that resulted from two continental plates moving away from one another
(1) African Rift Valley, (2) Baikal Rift Valley in Russia, (3) Rhine Rift Valley in Germany, (4) Great Rift Valley System
What is Seafloor Spreading?
Occurs when two oceanic plates move away from one another creating new oceanic crust.
Give 2 geologic features that is associated with Divergent Plate Boundaries
(1) Oceanic Ridges and (2) Rift Valleys
What is the other term that refers to a Transform Plate Boundary
Transform Fault or Conservative Margin
What is the other term that refers to a Convergent Plate Boundary?
Subduction Zone or Destructive Margin
What is the other term that refers to a Divergent Plate Boundary
Spreading Center or Constructive Margin
What happens in a Transform Plate Boundary?
Plates slide horizontally past each other and neither produce nor destroy lithosphere. It causes ground movement and produces fault/fracture zones.
A type of stress that occurs in a divergent plate boundary
Tensional Stress