Permian
Pangea
True or false: did the first dinosaurs appear during the Triassic?
True
Law of Inclusions
Any rock found within another rock must be older than the host rock itself
When did Pangea begin to split?
What Era did was the Permian apart of?
It was the last period of the Paleozoic Era
Where was Pangea located during the Triassic? (North, South, East, West/what area of the Earth did it cover)
It stretched from the North to South poles, completely covering the north, and not quite reaching the south.
What is the difference between erosion and weathering?
Weathering is the breakdown of rocks into smaller pieces, while erosion is the transportation of those broken pieces by agents like wind, water, or gravity
During which period did more geological activity happen in Boulder that we know of?
The Permian
Name 2 rock formations created during this time
Lyons and Lynkins
What changed the time period from the Permian to the Triassic?
Explain how the Lynkins and Lyons were formed
Wind blown sand dunes
What events ended both the Permian and Triassic?
Mass extinctions
Why may there have not been signs of life in Boulder during the Triassic? (just try your best)
explanation
Cross bedding
Cross-bedding is a sedimentary structure formed when flowing water or wind deposits sediment onto the steep, downcurrent side of a bedform like a ripple or dune, creating inclined layers
Where was Colorado located during this time? (2 parts)
In the middle of Pangea and near the equator
Name 3 elements that made the mass extinction during this time period by far the worst we know of
Gigantic volcanoes, damage to the ozone layer, deep water deprived of oxygen
Name 2 geological events that happened during this time period and list a piece of evidence we have to prove each
Shallow sea invasions: limestone
Wind blown dunes: Upper Lynkins
Name 3 characteristics/differences of each the Lynkins and Lyons formation.
A for effort
Why was global climate warming during these time periods?
high levels of carbon dioxide and methane in the atmosphere due to lots of volcanic activity and ice melting