Question 1
What is the major difference between a subduction zone and a collisional mountain chain?
◦ A subduction zone has active volcanism.
◦ A subduction zone is a more advanced stage.
◦ There are no mountains created in a subduction zone.
◦ There is an ocean basin still present in the case of a collisional mountain chain.
Question 2
Most geologists think the elevation of mountains above sea level is limited by earth's gravity because ________.
◦ thickening of the crust in mountain belts produces a weak deep crust the spreads by gravity collapse, limiting the elevation
◦ rock cliffs are subject to gravity failure and can only be about 1km high
◦ rocks can never reach escape velocity
◦ the earth's mantle is too weak to support the load of large mountains
Sea Level during the Last Glaciation
Changes in Earth’s Orbit
Jet streams and Earth’s heat budget
Impacts of rising sea level
Many U.S. regions under threat due to changes in sea level
Earth 65 Million Years Ago