Studied by 0 people
Looks like no one added any tags here yet for you.
Preservation requires ____ and ____
Hard parts
Rapid burial
What are the different types of preservation?
Petrified-Cavities or pores are filled with precipitated mineral matter
Mold-Shell or other structure is buried then dissolved by underground water
Cast-Hollow space of a mold is filled with mineral matter
Carbonization-Organic matter becomes a thin residue of carbon
Impression-Replica of the fossils surface preserved in fine grained sediment
Preserved in amber
True or False:
Fossils succeed one another in a definite and determineable order
True
Index fossils ____, ____, ____, and ____
Widespread geographically
Existed for a short ranged of geologic time
Function as point of time reference in strata assemblages
Help pinpoint the point in time a fossil was in a mineral
Match the following:
Eons ___ 100 millions
Eras ___ billions
Periods ___ 10 millions
Eons-Billions
Eras-100 millions
Periods-10 millions
Scientists accept that the earth is ____ years old
4.6 billion
