Unit 6 Historical and Virginia Geology Review

when interpreting a geologic column, if one event cuts through or affects another, it must be younger than the one it cut through 

• Law of Superposition

• Law of cross-cutting relationships

• Law of included fragments

• Law of orignial horizontality

in a series of undisturbed strata, the oldest layer is on the bottom and the youngest layer in on the top

• Law of Superposition

• Law of cross-cutting relationships

• Law of included fragments

• Law of orignial horizontality

Tags

NGSS.MS-ESS1-4

a timeline of Earth's 4.6-billion-year history divided into sections of time by major events or changes on Earth 

• Geologic Time Scale

• Geologic Period

• Half-life

• Radioactive decay

Tags

NGSS.MS-ESS1-4

the time it takes for one half of radioactive material to decay

• Geologic Time Scale

• Geologic Period

• Half-life

• Radioactive decay

a unit of geologic time; a division of an era

• Geologic Time Scale

• Geologic Period

• Half-life

• Radioactive decay

Tags

NGSS.MS-ESS1-4

the release of subatomic particles from the nuclei of radioactive elements until a stable nonradioactive element is produced 

 

• Geologic Time Scale

• Geologic Period

• Half-life

• Radioactive decay

Tags

NGSS.HS-PS1-8

calculating age in years

• Absolute Dating

• Trilobite

• Uniformitarianism

• Index fossil

Tags

NGSS.MS-ESS1-4

a marine organism in abundance during the Paleozoic Era

• Absolute Dating

• Trilobite

• Uniformitarianism

• Index fossil

Tags

NGSS.MS-LS4-1

theory that states that natural processes that occurred in geologic past are not different from those processes observed now

• Absolute Dating

• Trilobite

• Uniformitarianism

• Index fossil

a fossil used to determine the age of other fossils or rocks

• Absolute Dating

• Trilobite

• Uniformitarianism

• Index fossil