Geo Terms

solid rock beneath the soil

large area of precambrian rock that forms the core of a continent

scientist who studeis earthquakes or similar disturbances, and the efect they produce on the earth's crust

circular motion in a gas or liquid created by uneven heating

eroded material that is deposited by water, wind, or glacial ice

wearing awat of the earth's surface followed by the movement to other locations of materials that have worn away

history of the earth from its formation to the present. the eath's history may be divided into several major time periods

areas of low elevation containing plains and hills

period of geologic time from the beginning of the earth to 570 million years ago

bending of rock layers

theory by German scientist alfred wegener stating that 300 million years ago all of the earth's land masses collided to form one supercontinent called pangaea

movement along a crack or cracks in the earth's crust

magma that has forced its way into cracks in the earth's crust

period of geologic time from 570 million to 245 million years ago

process whereby water is removed from an area by flowing our of depressions in the land such as lakes and ricers

imprints in rocks of the remains of a plant or animal that lived millions of years ago

rock formed from cooling molten rock

a mineral that yields non-metals when processed

most recent era of geological time which began 66 million years ago

theory that states that the earth's outer shell consists of plates that move causing earthquakes, volcanoes, mountains, and the formation of new crust

quality of a substance that does not allw water to pass through it

a type of rock formed when sedimentary and igneous rocks are subejected to great heat and pressure

natural and human features of the landscape

rock usually formed by laters from the compression of sediments over millions of years

large area of precambrian rock that forms the core of canada

period of geologic time from 245 million to 66 million years ago

process whereby softer sedimentary rocks erode more quickly than harder rock shaping the surface of the landscape

period of time when freezing temperatures created ice sheets across continents

slow movng mass of ice

valley that is created when the portion of land between two faults drops down

warm blooded vertebrate animals suck as humans and whales

super continent that included al of the earth's land masses. it existed from about 300 million to 245 million years ago

areas of high elevation containing mountains and plateaus

mineral that yields a metal when processed

water resulting from the melting of glacier ice and/or snow

soft, low value coal sometimes used in thermal electric plants

elevated flat areas

the sutdy of the history, composition, and structure of the earth's crust

steep cliff formed by erosion or faulting

long, narrow inlet of the sea with steep sides

what is the order of the eras from the oldest to recent