Type:

Other

Description:

Offered by the United States Geological Survey (USGS) as a general interest publication, this site is an online edition of a text by the same name, offering a concise overview of the concepts associated with the age of the Earth. The online edition was revised in October of 1997 to reflect current thinking on this topic. Section headers are Geologic Time, Relative Time Scale, Major Divisions of Geologic Time, Index Fossils, Radiometric Time Scale, and Age of the Earth.

Subjects:

  • Education > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12

Keywords:

Teacher content knowledge,NSDL,Grade 5,Grade 8,Grade 9,Space Science,Grade 6,Grade 7,Upper Elementary,NSDL_SetSpec_1007936,Grade 10,Grade 11,Grade 12,Life Science,Geologic time,Informal Education,Evolution,Middle School,Instructional materials,Earth and space science,Elementary School,oai:nsdl.org:2200/20120114184332556T,General Public,High School,Education,Geoscience

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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