12 terms

CH 10:SEC 3 THE CHANGING CONTINENTS

STUDY
PLAY
RIFTING
the process by which earths crust breaks apart
CRATONS
ALL OF CONTINENTS THAT EXIST TODAY CONTAIN LARGE AREAS OF STABLE ROCK
SHIELDS
ROCKS WITHING THE CRATONS THAT HAVE BEEN EXPOSED AT EARTH'S SURFACE
TERRANE
A PIECE OF LITHOSPHERE THAT HAS A UNIQUE GEOLOGIC HISTORY THAT DIFFERS FROM THE HISTORIES OF SUROUNDING LITHOSPHERE
ACCRETION
THE PROCESS IN WHICH A TERRANE BECOMES PART OF A CONTINENT
SEAMOUNTS
UNDERWATER MOUNTAIN
ATOLLS
SMALL CORAL ISLANDS
SUPERCONTINENT CYCLE
THE PROCESS IN WHICH CONTINENTS FORM AND BREAK APART OVER TIME
PANGAEA
THE SUPERCONTINENT THAT FORMED 300 MILLION YEARS AGO
PANTHALASSA
the single large ocean that covered earth's surface during the time the supercontinent pangaea existed
LAURASIA
a hypothetical continent that (according to plate tectonic theory) broke up later into North America and Europe and Asia
GONDWANALAND
a hypothetical continent that (according to plate tectonic theory) broke up later into India and Australia and Africa and South America and Antarctica