What was Pangaea? What were some of the early lines of evidence for continental

Question

What was Pangaea? What were some of the early lines of evidence for continental drift? What plate are we on now? What plate is Hawaii located on? What type of plate boundary is between Indo-Australia late and Antarctic plate? Inclination can give some idea of the latitude at which a rock formed. If the dip angle is very steep it indicates that the rock probably formed near the _____. Describe the basic concept of "sea floor spreading"? What was thought at least initially as its major driving force for seafloor spreading? How do mid-oceanic ridges and oceanic trenches fit into this concept (e.g. where does seafloor form and where is it destroyed)? What are the three main types of plate boundaries indicated by relative motion below: Marine magnetic anomalies are oriented (perpendicular? or parallel?) with respect to the rift valley? What is the cause of negative magnetic marine anomalies? Are these anomalies similar on both sides of the ridge crest? Note the figure below, how would the age of the rock change going from A to B? Note the figure to the right. If the distance from A to B is 400 km and a sample of oceanic crust at B is found to be 40 million years old, what is the seafloor spreading rate? 1. 2. What technology is being employed to measure rat directly in real time? Some recent rift valleys are found on the east side of what continent? A trench system, accretionary wedge, forarc basin and _____ are common features at ocean-ocean convergence zones. Mountain belts adjacent and parallel to the coast line of a continent are indicative of what type of boundary _____. What are some other forcing mechanisms that might be involved in plate motion besides convection? The Hawaii is thought to form a stationary _____. Which island is older Maui or Oahu? What do these islands indicate about the direction of late motion over the last 3.4 m.y?

Explanation / Answer

Answer:1

Pangea was the supercontinent around 150 million years ago.

Answer:2

Continental drift were proved by presence of flora and fauna, coastal boundaries shape and polar wander path.

Answer:3

According to your current location it will be decide either it is convergent, divergent or transform.

Answer:4

Hawaii located in the middle of northern pacific oceanic plate.

Answer:6

Sea floor spreading is the spreading of oceanic plate into opposite direction due to the movement of convention cells in mantle. It signifies mid oceanic ridges.

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