What did Edward Suess note about continents?
Noted similarities between late paleozoic plant fossils and different continents. Credited with the idea of the super continent of Gondwana and the Tethys ocean.
The Glossopteris Flora is found in what hemisphere?
Southern Hemisphere in the continent of Gondwana
The Continental Drift Hypothesis was created by?
2 opposite magnetic poles
A technique used to determine intensity and direction of the Earths past magnetic fields..
The temperature at which iron-bearing minerals in cooling magma/lave attain their magnetism..
Apparent pole movement plotted on a map...
The idea of Seafloor Spreading was announced by..
The 3 types of plate boundaries are..
Convergent, Divergent, and Transform
Oceanic- Oceanic, Oceanic - Continental, and Continental - Continental are types of what boundary?
Which plate is subjected to subduction?
What are plutons?
Large bodies of intrusive igneous rock
How can you recognize ancient convergent boundaries?
1. Igneous Rock
3. Zone of intensely deformed rocks
Fractures in the sea floor are..
An example of a "Hot Spot"
Hawaiian- Emperor Seamount chain
A mantle plume is located ...
Under a "Hot Spot" deep in the mantle of the Earth
Represents times of normal and reversed polarity at oceanic ridges (think dating technique)
What are plates?
Variable pieces of the lithosphere (oceanic parts and continental parts)
Indo-Australian, North American, Pacific, and Antartica are all ...
Major Plates, Pacific being the largest.
The mid atlantic ridge is an example of what plate boundary?
The San Andreas fault in California is an example of what plate boundary?
The Himalayas are an example of what plate boundary?
Convergent - Continental to Continental
The study of earthquakes by geologists
Energy radiating out from the point of release, moves out in all directions?
A 6.9 scaled earthquake in San Francisco. San Andreas fault slip.
The focus of the earthquake?
The center of the wave of the earthquake where energy is released and pushed in all directions
The part of the wave of the earthquake that is located right above the focus, most talked about in news because it is right above where the fault began to rupture.
90% of earthquakes have depths less than
Seismic Risk Maps indicate
Potential severity of an earthquake
The inner core of the Earth is..
Solid, and made up of mostly nickel
Bending waves based on travel direction?
P wave shadow zone is between
The crust/mantle boundary was discovered by
Crust, uppermost mantle
Below lithosphere, magma is generated here.