Science Vocab Crossword

A supereon preceding the Phanerozoic eon
Tearing away due to long exposure to air
A time when a lot of species suddenly disappear
The age of a object relative to the objects around it
The act of depositing something such as rock
The second shortest measure on the geological scale; Jurassic, Triassic
A result of sea floor spreading resulting in release of magma underwater
A fossil used for dating the strata around it
A mountain with magma sitting inside of it
The first geological period of the Paleozoic era
The second longest measure of time on a geological scale; Mesozoic,
Determining an age on a specified time scale in geology
A technique used to find things like igneous or gas, and their impurities during formation using a radioactive isotope
A rock formed through extreme heat and pressure
A section of earth that contains the crust and upper mantle
The chart showing ways that rocks form and change over time
The longest measure on the geological time scale; Phanerozoic
The breaking down and relocation of sediment
A sample of a glacier taken to see the age of it
A point where two tectonic plates meet; San Andreas _____
The outermost layer of earth containing the tectonic plates
The form of magma when released from the volcano
Tectonic _____
When the sea floor opens up to form more sea floor
The shortest measure of time on a geological scale
A plate floating on the earth's mantle
Small pieces of rock broken down by erosion and weathering
An specimen of a life form that lived long ago and was preserved in the ground; dinosaur bones