Precambrian Eon

A Short History of the World – from varying sources
4,567,170,000 B.C. – 2,350,000,000 B.C.

Updated when new information available. Current update: 09/26/2009.

Legend Color Guide
Geological Time In Descending Order:
 Eons = Cyan | Eras = Dark Green | Periods = Magenta | Epochs = Blue | Stages = Orange | Major Geological Events = Heavy Black Underlined | Cataclysmic Events = Bold Red Underlined |
Note: Some very early ages overlap or have conflicting dates, because different authorities have placed them or named them differently at different times.
Volcanic Explosivity Index (VEI)
Orders of Magnitude. Multiplier = 10: (VEI 6) = (10 X VEI 5):
 Large (Mt. St. Helens) = 5 | Terrific = 6 | Colossal = 7 | Gigantic = 8 | Cataclysmic (Super Volcano) 9 and above |
Culture Time
 Culture Periods = Brown | Not Generally Recognized Events and History = Magenta | Anomalies = Dark Green | Recognized Events and History = Plain Black |

Major Events

Precambrian Eon, aka Cryptozoic (Age of Hidden Life)
• 4,567,170,000 B.C. – • 542,000,000 B.C.

Priscoan Eon – recent promotion from Era
• 4,560,000,000 B.C. – • 3,900,000,000 B.C.

Hadean Eon
• 4,560,000,000 B.C. – • 760,000,000 B.C.
Commonly believed to be time of hellish conditions with large meteor impacts and high volcanism world-wide. This opinion may be contradicted by new evidence. See below.

• 4,567,170,000 B.C. – Cryptic Epoch (Hidden)

• 4,567,170,000 B.C. – • 4,150,000,000 B.C. – Cryptic Stage (General)

• 4,400,000,000 B.C. – Zircon crystal formation analysis indicates that the early Earth had cooled to about 100-degrees Centigrade, enough to have oceans and continents – key conditions for life.

The zircon crystals contained high levels of a particular isotope of oxygen that could only have come from clay. Since clay can only form in water at the Earth’s surface, they concluded that oceans were around at the time.

If you were to have come by in a flying saucer 4.4 billion years ago and look down on a good day there would have been about as much continent as there is now. There would have been about as much water, it would have been blue, there would have been lots of volcanoes but it would have looked like the planet that we know and love… Life could have begun virtually on day one. There was no turbulent adolescence." – Mark Harrison, Australian National University. 06/16/2005

• 4,150,000,000 B.C. – Basin Groups Epoch
• 4,150,000,000 B.C. – • 3,975,000,000 B.C. – Basin Groups Stage (General)
• 4,000,000,000 B.C. – • 3,000,000,000 B.C. – Swazian Stage (South African)

• 3,975,000,000 B.C. – Nectarian Epoch
• 3,975,000,000 B.C. – • 3,900,000,000 B.C.- Nectarian Stage (General)

• 3,900,000,000 B.C. – Early Imbrian Epoch
• 3,900,000,000 B.C. – • 3,800,000,000 B.C. – Early Imbrian Stage (General)

The Archean Eon – recent promotion from Era
• 3,875,000,000 B.C. – • 2,825,000,000 B.C.

• 3,800,000,000 B.C.. – • 3,600,000,000 B.C. – Eoarchean EA Era

• 3,800,000,000 B.C. – Izuan Era

• 3,800,000,000 B.C. – Isuan Sub-Era
• 3,800,000,000 B.C. – • 3,400,000,000 B.C. – Qianxin Stage (Chinese)
• 3,800,000,000 B.C. – • 3,500,000,000 B.C. – Isuan Stage (European)

• 3,600,000,000 B.C. – • 3,200,000,000 B.C. – Paleoarchean PA Era

• 3,525,000,000 B.C. – Swazian Sub-Era
• 3,430,000,000 B.C. – Stromatolites in the Pilbara region of Marble Bar, Western Australia built by microbes. Ref: Ancient rocks ‘built by microbes’ 06/08/2006

• 3,200,000,000 B.C. – • 2,800,000,000 B.C. – Mesoarchean MA Era

• 3,200,000,000 B.C. – • 2,630,000,000 B.C. – Droplets of bitumen were found in 3.2 billion to 2.63 billion year old shales in the Pilbara region, Western Australia. This discovery is evidence that petroleum was being produced and implies that the Earth’s oceans were teeming with organisms. 06/16/2005

• 3,100,000,000 B.C. – • 2,600,000,000 B.C. – Fupingan Stage (Chinese)
• 3,000,000,000 B.C. – • 2,500,000,000 B.C. – Randian Stage (South African)

• 2,825,000,000 B.C. – Randian Sub-Era

• 2,800,000,000 B.C. – • 2,500,000,000 B.C. – Neoarchean NA Era

• 2,800,000,000 B.C. – Randian Era

ANOMALY: Spherical Objects found in Africa.

south_african_sphere

south_african_sphere_closeup

   Some of the objects have a set of three parallel grooves around their equators, and some are reported to be metallic. Found in pyrophyllite in Western Transvaal, Africa. Pyrophyllite is a quite soft secondary mineral formed by sedimentation. The highly specific dating of the pyrophyllite rock layers in which these spheres are found gives an age of 2.8 billion years. The globes are claimed to have a fibrous structure on the inside with a shell around it.

   These objects were found many decades ago (prior to 1980), but only recently have been reexamined. Not all are round, and none of the metallic ones have been examined. Some claim they are far younger than the surrounding material. Some testing has claimed that their balance exceeded the limit of the measuring technology – balanced to within 1/100,000ths of an inch from absolute perfection, and the only way that either nature or human technology could create them would be in zero gravity.

   It should be noted that the external appearance of some spheres closely resembles images returned by the Cassini-Huygens Mission of Saturn’s moon Iapetus.

   It is also postulated that these could be some form of life seed. See Crick/Orgel 1973 Icarus paper (the panspermia hypothesis) and Crick, Francis, Life Itself, 1981. These objects are dated to just before the first known appearance of life in the immediately following Proterozoic Eon.
See: A balanced and concentric ringed mystery spheroid and;
See: The Phanerozoic Eon – Historical Present: 2004 A.D. 09/26/2009

• 2,600,000,000 B.C. – • 2,350,000,000 B.C. – Wutaian Stage (Chinese)

Compiled by PIF

  1. The Precambrian Eon: 4,567,170,000 B.C. – 2,350,000,000 B.C.
  2. The Proterozoic Eon: 2,500,000,000 B.C. – 542,000,000 B.C.
  3. The Phanerozoic Eon – Palaeozoic Era: 542,000,000 B.C. – 142,000,000 B.C.
  4. The Phanerozoic Eon – Cretaceous Era: 142,000,000 B.C. – 71,300,000 B.C.
  5. The Phanerozoic Eon – Cenozoic Era: 66,000,000 B.C. – 2,000,000 B.C.
  6. The Phanerozoic Eon – Quaternary Period: 1,806,000 B.C. – 12,000 B.C.
  7. The Phanerozoic Eon – Holocene Epoch: 11,430 B.C. – 4128 B.C.
  8. The Phanerozoic Eon – Historical Present: 4000 B.C. – 2009 A.D.
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