Glaciation
Milankovitch cycle
tectonic plates
Factors
100
glaciers can only be formed on...
land?
100
what is pleistoscene
the geological period of time lasting from c. 2.58 million to 11,700 years ago
100
why does it take a long time
tectonic plates move slowly
100
the three factors
eccentricity,obliquity,precession
200
indicates early glaciation
what is tillite
200
using factors he what?
calculated changes in solar energy and the earth's surface temperature
200
suggested when ice ages happen
what is when continents drift from the equator
200
Variations in Shape of the Earth's orbit around the Sun
what is eccentricity?
300
Forms continental ice sheets
what is Average temp. must be lowered for a while geological time wise
300
who is milutin milankovitch
serbian astrophysicist
300
what does ocean circulation do
transports heat and moisture making the climate change
300
wobbling of earths axis
what is precession
400
date of the two identified glacial episodes
precambian era, 2 billion years ago and 600 million years ago.
400
what was this in attempts to do?
in attempts to correlate those changes with climate fluctuations of the Pleistocene
400
what continents had ice ages and when
250 million years ago, Africa, Australia. South America and India,during the paleozoic era.
400
which is changes in the angle that the axis makes with the plane of Earth's Orbit
what is obliquity
500
tillite
what is sedimentary or layered rock composed of rock fragments and sandstone that gets turned to stone
500
what is the key factor
the premise that variations in solar radiation are a key factor
500
how was it possible that four countrys had ice ages?
This was possible because they were all together as a supercontinent very far south of where they are now.
500
draw a diagram of all three factors
