Geological timescale

 
    Science
    Theosophy
       Began (years BP)
     Began (years BP)
Phanerozoic eon    
  Cenozoic era    
  Quaternary period:    
    Holocene epoch
11,700
 
    Pleistocene
2,588,000
1,090,000
  Tertiary period:    
    Pliocene
5,333,000
1,870,000
    Miocene
23,030,000
3,670,000
    Oligocene
33,900,000
5,280,000
    Eocene
56,000,000
7,130,000
    Palaeocene
66,000,000
7,870,000
 
  Mesozoic era    
  Cretaceous
145,000,000
16,000,000
  Jurassic
201,300,000
28,000,000
  Triassic
252,170,000
44,000,000
 
  Palaeozoic era    
  Permian
298,900,000
74,000,000
  Carboniferous
358,900,000
110,000,000
  Devonian
419,200,000
148,000,000
  Silurian
443,400,000
179,000,000
  Ordovician
485,400,000
214,000,000
  Cambrian
541,000,000
250,000,000
 
Proterozoic eon
2,500,000,000
1,120,000,000
 
Archean eon
4,000,000,000
1,890,000,000
 
Hadean eon
4,600,000,000
2,170,000,000


According to theosophy, the fourth round of the earth’s evolution began about 320 million years ago, at the end of the Proterozoic. The corresponding scientific date is about 640 million years ago.

Sources:
2013 International Stratigraphic Chart, http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf
H.P. Blavatsky, The Secret Doctrine, TUP, 1977 (1888), 2:68-70, 709-15
Frederick J. Dick and William Scott, ‘The age of the earth’, The Theosophical Path, April 1919, pp. 369-79
David Pratt, Geochronology: theosophy and science and Secret cycles, www.davidpratt.info

Problems with radiometric dating:
G. de Purucker, The Esoteric Tradition, 2nd ed., TUP, 1940, pp. 324-7, 453-4, 760
David Pratt, The age of earth, www.davidpratt.info



Last revised: March 2013.


Root-race chronology

Rounds and manvantaras: an outline

Evolution in the fourth round

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