GCMD Chronostratigraphic Units Types Keywords

PALEOARCHEAN

https://gcmd.earthdata.nasa.gov/kms/concept/2cd7912b-8cf2-41a1-99b9-8797dcd94fa7

broader
https://gcmd.earthdata.nasa.gov/kms/concept/7160e90a-d7c4-4817-9b1c-e82211688bdb original
narrower
2cd7912b-8cf2-41a1-99b9-8797dcd94fa7 original
change note
2019-11-13 10:06:42.0 [tstevens] Insert Concept
add broader relation (PALEOARCHEAN [2cd7912b-8cf2-41a1-99b9-8797dcd94fa7,423341] - ARCHAEAN [7160e90a-d7c4-4817-9b1c-e82211688bdb,396445]);
2019-11-15 09:46:08.0 [tstevens]
insert Definition (id: null
text: The Paleoarchean is a geologic era within the Archaean Eon. It spans the period of time 3,600 to 3,200 million years ago. The era is defined chronometrically and is not referenced to a specific level of a rock section on Earth. During this era, a large asteroid, about 37 to 58 kilometres (23–36 mi) wide, collided with the Earth in the area of South Africa about 3.26 billion years ago, creating the features known as the Barberton greenstone belt.
language code: en);
definition The Paleoarchean is a geologic era within the Archaean Eon. It spans the period of time 3,600 to 3,200 million years ago. The era is defined chronometrically and is not referenced to a specific level of a rock section on Earth. During this era, a large asteroid, about 37 to 58 kilometres (23–36 mi) wide, collided with the Earth in the area of South Africa about 3.26 billion years ago, creating the features known as the Barberton greenstone belt.
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
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in scheme chronounits original