Fossil Record Flashcards
uniformitarianism
the theory that changes in the earth’s crust during geological history have resulted from the action of continuous and uniform processes.
catastrophism
the theory that changes in the earth’s crust during geological history have resulted chiefly from sudden violent and unusual events.
paleontology
the branch of science concerned with fossil animals and plants.
relative dating
past events
absolute dating
determining age
superposition
linear systems
isotope
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
radioactive decay
spontanieous transformation
half-life
u live a half life
fossil
bones in layers of dirt
trace fossil
a small fossil
mold
a deadly fungi
cast
what you get on your hand when you break it
unconformity
a surface of contact between two groups of unconformable strata.
mass extinction
when a lot of things die at once
Jurassic period
56 million years ago
Cretaceous period
Image result for cretaceous period definitionwww.britannica.com
noting or pertaining to a period of the Mesozoic Era, from 140 million to 65 million years ago, characterized by the greatest development and subsequent extinction of dinosaurs
Devonian period
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The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years
Quaternary period
The Quaternary period is the name for the time in which we live.
Permian period
The Permian is a geologic period and system which spans 46.7 million years
