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The Hadean is the oldest, it started at Earth's formation about 4.6 billion years ago (4,600 Ma), and ended roughly 3.8 billion years ago.

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Which is the oldest era christian orSaka or Hijri or Vikrami?

Which is the oldest era christian or Saka or Hijri or Vikrami?


The oldest era?

Its Archeozoic.


What is oldest period in the mesozoic era?

triassic


What is the oldest era geologically?

The oldest geological era is the Precambrian period. It is the period of Earth's formation, as well as the origin of the first single and multi-celled organisms.


Which is the oldest era saka era or vikrama era?

The Vikrama Era is the earlier/oldest of the two. The Vikrama Era began about 56 BC, whereas the Saka Era started about 78 AD, roughly 135 years after the Vikrama Era.Please see the related links below for more information.


What is the oldest era to the most recent?

The oldest named Era was the Eoarchean Era from 4 to 3.6 billion years ago. This was preceeded by the Hadean Eon (4,576.2 to 4,000 Ma) but this so far is not subdivided into eras.


What era are the oldest rocks found in California from?

ploterozoic,and paleozoic


What are the four geologic time scale eras from oldest to most recent?

The 4 eras are Cenozoic era, the mesozoic era, the paleozoic era, and the precambrian era.


Place the geologic eras into the proper sequence Number the oldest era 1 and the most recent era 4?

cenozoicmesozoicpaleozoicprecambrian


What age comes after the cretaceous period?

The Paleocene, which is the first (oldest) part of the Cenozoic Era, as the Cretaceous was the last of the Mesozoic Era.


What is the correct order from oldest to youngest era?

shang,qin,han, tang


What is the Archean?

The Archean era is the earliest Precambrian era, archean means "ancient" or "beginning". The Archean era starts with the oldest known rocks, about 4.6 billion years ago.