GCMD Chronostratigraphic Units Types Keywords

ARCHAEAN

https://gcmd.earthdata.nasa.gov/kms/concept/7160e90a-d7c4-4817-9b1c-e82211688bdb

broader
https://gcmd.earthdata.nasa.gov/kms/concept/a9f88ca9-5d19-45fa-8fbb-3c6ff5f1f190 original
narrower
7160e90a-d7c4-4817-9b1c-e82211688bdb original
change note
2019-11-13 10:05:55.0 [tstevens] Insert Concept
add narrower relation (ARCHAEAN [7160e90a-d7c4-4817-9b1c-e82211688bdb,396445] - NEOARCHEAN [d2d0ac71-d27d-46cb-b95b-39a6f796c501,423333]);
2019-11-13 10:06:19.0 [tstevens] Insert Concept
add narrower relation (ARCHAEAN [7160e90a-d7c4-4817-9b1c-e82211688bdb,396445] - MESOARCHEAN [27660bb3-982e-414c-991a-707abd861f46,423337]);
2019-11-13 10:06:42.0 [tstevens] Insert Concept
add narrower relation (ARCHAEAN [7160e90a-d7c4-4817-9b1c-e82211688bdb,396445] - PALEOARCHEAN [2cd7912b-8cf2-41a1-99b9-8797dcd94fa7,423341]);
2019-11-13 10:08:16.0 [tstevens] Insert Concept
add narrower relation (ARCHAEAN [7160e90a-d7c4-4817-9b1c-e82211688bdb,396445] - EOARCHEAN [8dff752e-939d-4b16-a735-bb4af8dbd785,423345]);
2019-11-14 09:04:35.0 [tstevens]
insert Definition (id: null
text: The Archean Eon is one of the four geologic eons of Earth history, occurring 4,000 to 2,500 million years ago (4 to 2.5 billion years ago). During the Archean, the Earth's crust had cooled enough to allow the formation of continents and life started to form.
language code: en);
definition The Archean Eon is one of the four geologic eons of Earth history, occurring 4,000 to 2,500 million years ago (4 to 2.5 billion years ago). During the Archean, the Earth's crust had cooled enough to allow the formation of continents and life started to form.
narrower
https://gcmd.earthdata.nasa.gov/kms/concept/27660bb3-982e-414c-991a-707abd861f46 original
broader
7160e90a-d7c4-4817-9b1c-e82211688bdb original
https://gcmd.earthdata.nasa.gov/kms/concept/2cd7912b-8cf2-41a1-99b9-8797dcd94fa7 original
broader
7160e90a-d7c4-4817-9b1c-e82211688bdb original
https://gcmd.earthdata.nasa.gov/kms/concept/8dff752e-939d-4b16-a735-bb4af8dbd785 original
broader
7160e90a-d7c4-4817-9b1c-e82211688bdb original
https://gcmd.earthdata.nasa.gov/kms/concept/d2d0ac71-d27d-46cb-b95b-39a6f796c501 original
broader
7160e90a-d7c4-4817-9b1c-e82211688bdb original
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
type
Resource
type
Resource original
Concept original
in scheme chronounits original