Geological Time Scale

Learn about Earth’s history through the geological time scale.

Sample Cards

Geological Time Scale

The timeline that organizes Earth's history into eons, eras, periods, and epochs

Eon

The largest division of time on the geological time scale

Mesozoic Era

The era known as the "Age of Dinosaurs"

Quaternary Period

The period in which modern humans first appeared

Precambrian

The eon that represents the time before the appearance of complex life

Hadean

Eon that represents the time when the Earth was forming and molten

Archean

Eon when the Earth cooled enough for continents and the earliest life forms to appear

Proterozoic

Eon when the first complex life forms appeared

Geological Time Scale Flashcards

Looking to expand your skills in Geology? Look no further! These flashcards are designed to help you learn and retain information in a fun and engaging way.

Study With Rememble

Study With Rememble

Rememble is a free flashcard app that helps you learn and retain information in a fun and engaging way. With Rememble, you can create your own flashcards or choose from thousands of pre-made decks in a variety of subjects.

Whether you're studying for a test, learning a new language, or just want to expand your knowledge, Rememble has you covered. Sign up today and start learning!

What's in this deck?

Geological Time Scale

The timeline that organizes Earth's history into eons, eras, periods, and epochs

The timeline that organizes Earth's history into eons, eras, periods, and epochs

Geological Time Scale

Eon

The largest division of time on the geological time scale

The largest division of time on the geological time scale

Eon

Mesozoic Era

The era known as the "Age of Dinosaurs"

The era known as the "Age of Dinosaurs"

Mesozoic Era

Quaternary Period

The period in which modern humans first appeared

The period in which modern humans first appeared

Quaternary Period

Precambrian

The eon that represents the time before the appearance of complex life

The eon that represents the time before the appearance of complex life

Precambrian

Hadean

Eon that represents the time when the Earth was forming and molten

Eon that represents the time when the Earth was forming and molten

Hadean

Archean

Eon when the Earth cooled enough for continents and the earliest life forms to appear

Eon when the Earth cooled enough for continents and the earliest life forms to appear

Archean

Proterozoic

Eon when the first complex life forms appeared

Eon when the first complex life forms appeared

Proterozoic

Phanerozoic

Eon of visible life, includes the Paleozoic, Mesozoic, and Cenozoic eras

Eon of visible life, includes the Paleozoic, Mesozoic, and Cenozoic eras

Phanerozoic

Paleozoic Era

Era within the Phanerozoic Eon known for the explosion of life

Era within the Phanerozoic Eon known for the explosion of life

Paleozoic Era

Cenozoic Era

Era within the Phanerozoic Eon known for the rise of mammals

Era within the Phanerozoic Eon known for the rise of mammals

Cenozoic Era

Fossils

Their role in defining geological periods

Their role in defining geological periods

Fossils

Jurassic period

A period within the Mesozoic Era when dinosaurs dominated the land

A period within the Mesozoic Era when dinosaurs dominated the land

Jurassic period

Cambrian Period

The period within the Paleozoic Era when most of the major groups of animals first appear in the fossil record

The period within the Paleozoic Era when most of the major groups of animals first appear in the fossil record

Cambrian Period

Quaternary Period

Period known for its two major ice ages

Period known for its two major ice ages

Quaternary Period

Cambrian Explosion

Event that saw the rapid appearance of most major animal phyla

Event that saw the rapid appearance of most major animal phyla

Cambrian Explosion

Extinction Events

Events that define geological boundaries, like the extinction of the dinosaurs at the boundary between the Cretaceous Period and the Tertiary Period

Events that define geological boundaries, like the extinction of the dinosaurs at the boundary between the Cretaceous Period and the Tertiary Period

Extinction Events

Holocene epoch

Current epoch within the Quaternary Period, began about 12,000 years ago

Current epoch within the Quaternary Period, began about 12,000 years ago

Holocene epoch

Pleistocene epoch

Epoch within the Quaternary Period known for its Ice Ages

Epoch within the Quaternary Period known for its Ice Ages

Pleistocene epoch

Hadean Eon

The time when the Earth was forming and was largely molten

The time when the Earth was forming and was largely molten

Hadean Eon

Plate Tectonics

Their role in shaping Earth's history, continents, and oceans

Their role in shaping Earth's history, continents, and oceans

Plate Tectonics

Radiometric Dating

Technique used to date materials such as rocks, based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products

Technique used to date materials such as rocks, based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products

Radiometric Dating

Climate Change

Its role in causing mass extinction events and shaping geological time

Its role in causing mass extinction events and shaping geological time

Climate Change

Mass Extinctions

Their role in changing the course of life on Earth

Their role in changing the course of life on Earth

Mass Extinctions

Deep Time

The concept of geologic time that encompasses Earth's entire history

The concept of geologic time that encompasses Earth's entire history

Deep Time

Related Flashcards

Continue your spaced-repetition or comprehensible input learning with these other flashcard decks related to Geology.

Minerals and Rocks

Learn about different types of minerals and rocks.

Plate Tectonics

Understand the movement of the Earth’s tectonic plates.

Volcanoes

Study volcanic activity and types of volcanoes.