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How many millions of years ago did life first appear? Type your answer...

How many millions of years ago did life first appear? Type your answer...

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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# GSA Geologic Time Scale v. 5.0 ## Overview The GSA Geologic Time Scale is a comprehensive chart that organizes the chronological divisions of Earth's history into eons, eras, periods, epochs, and ages. This particular version (5.0) spans from the Precambrian to the Cenozoic. --- ## Eons and Eras ### Precambrian - **Proterozoic** - Neoproterozoic: Ediacaran, Cryogenian, Tonian - Mesoproterozoic: Stenian, Ectasian, Calymmian - Paleoproterozoic: Statherian, Orosirian, Rhyacian, Siderian - **Archean** - Neoarchean, Mesoarchean, Paleoarchean, Eoarchean ### Paleozoic - **Permian** - Lopingian: Changhsingian, Wuchiapingian - Guadalupian: Capitanian, Wordian, Roadian - Cisuralian: Kungurian, Artinskian, Sakmarian, Asselian - **Carboniferous** - Pennsylvanian: Gzhelian, Kasimovian, Moscovian, Bashkirian - Mississippian: Serpukhovian, Visean, Tournaisian - **Devonian** - Late: Famennian, Frasnian - Middle: Givetian, Eifelian - Early: Emsian, Pragian, Lochkovian - **Silurian** - Pridoli, Ludlow (Ludfordian, Gorstian), Wenlock (Homerian, Sheinwoodian), Llandovery (Telychian, Aeronian, Rhuddanian) - **Ordovician** - Late: Hirnantian, Katian, Sandbian - Middle: Darriwilian, Dapingian - Early: Floian, Tremadocian - **Cambrian** - Furongian, Series 3, Series 2, Terreneuvian ### Mesozoic - **Cretaceous** - Late: Maastrichtian, Campanian, Santonian, Coniacian, Turonian, Cenoman
Transcribed Image Text:# GSA Geologic Time Scale v. 5.0 ## Overview The GSA Geologic Time Scale is a comprehensive chart that organizes the chronological divisions of Earth's history into eons, eras, periods, epochs, and ages. This particular version (5.0) spans from the Precambrian to the Cenozoic. --- ## Eons and Eras ### Precambrian - **Proterozoic** - Neoproterozoic: Ediacaran, Cryogenian, Tonian - Mesoproterozoic: Stenian, Ectasian, Calymmian - Paleoproterozoic: Statherian, Orosirian, Rhyacian, Siderian - **Archean** - Neoarchean, Mesoarchean, Paleoarchean, Eoarchean ### Paleozoic - **Permian** - Lopingian: Changhsingian, Wuchiapingian - Guadalupian: Capitanian, Wordian, Roadian - Cisuralian: Kungurian, Artinskian, Sakmarian, Asselian - **Carboniferous** - Pennsylvanian: Gzhelian, Kasimovian, Moscovian, Bashkirian - Mississippian: Serpukhovian, Visean, Tournaisian - **Devonian** - Late: Famennian, Frasnian - Middle: Givetian, Eifelian - Early: Emsian, Pragian, Lochkovian - **Silurian** - Pridoli, Ludlow (Ludfordian, Gorstian), Wenlock (Homerian, Sheinwoodian), Llandovery (Telychian, Aeronian, Rhuddanian) - **Ordovician** - Late: Hirnantian, Katian, Sandbian - Middle: Darriwilian, Dapingian - Early: Floian, Tremadocian - **Cambrian** - Furongian, Series 3, Series 2, Terreneuvian ### Mesozoic - **Cretaceous** - Late: Maastrichtian, Campanian, Santonian, Coniacian, Turonian, Cenoman
**Question:** How many millions of years ago did life first appear? **Input Field:** Type your answer... This text is a question prompt intended for learners to provide an answer regarding the timeline of the appearance of life on Earth. It is an interactive component typically used in educational platforms to engage users in critical thinking or knowledge recall exercises. There are no graphs or diagrams associated with this text.
Transcribed Image Text:**Question:** How many millions of years ago did life first appear? **Input Field:** Type your answer... This text is a question prompt intended for learners to provide an answer regarding the timeline of the appearance of life on Earth. It is an interactive component typically used in educational platforms to engage users in critical thinking or knowledge recall exercises. There are no graphs or diagrams associated with this text.
Expert Solution
Step 1: Introduction

,Geological time scale is a system which describes the history of the Earth and it's timing relationship. It covers vast expanses of time nearly 4.6 billion years. 

The time scale has been divided into several units they are Eon, Era, Period and Epoch. 


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