geology 2 Flashcards
what are the colors and what do they represent used on maps
brown-topography red-highways blue-water black-man made objects green-vegetation>3 feet white-no vegetation or vegetation<3 feet
what are the different types of maps
highway maps-show roads & political boundaries
topographic maps-shows elevation
geologic maps-shows rocks exposed at surface of earth
specialized maps
what are the types of projection
globe
mercator-polar regions extremely distorted
polyconic-useful for topo maps
characteristics of latitude lines
parallel to the equator
1 degree is 70 miles
characteristics of longitude lines
connect pole to pole
meridian
lines converge at poles
small scale maps vs large scale maps
small-shows lots of are at low detail
large- show a small area in lots of detail
3 of some of the early attempts at finding out how old the earth is
bishop ussher-based on biblical research
lord kelvin-data considered very accurate, thought it was about 100million years old
william “strata” smith-used rick layers
what is the pre-cambrien age
4.6 billion years to 600 million years
single cell organisms
first continents
what is the paleozoic
600 million to 250 million
age of invertebrates
life becomes more complex and evolves on land
mesozoic period
250 million to65 million years
age of reptiles
mammals evolve
mass extinction of dinosaurs
cenozoic period
what period were in
age of mammals
hominids evolve
