GCMD Chronostratigraphic Units Types Keywords

PROTEROZOIC

https://gcmd.earthdata.nasa.gov/kms/concept/4407ca3c-3dc0-402c-bfc3-4dabd23f283a

broader
https://gcmd.earthdata.nasa.gov/kms/concept/a9f88ca9-5d19-45fa-8fbb-3c6ff5f1f190 original
narrower
4407ca3c-3dc0-402c-bfc3-4dabd23f283a original
change note
2012-09-13 16:15:49.0 [saritz] Insert Concept
add narrower relation (PROTEROZOIC [4407ca3c-3dc0-402c-bfc3-4dabd23f283a,19817] - Test2323 [4d48e427-fb9d-4c7f-b6ee-0acb0e07a95c,40577]);
2012-10-12 16:14:17.0 [saritz] Remove Concepts
delete narrower relation (null);
2019-11-13 09:50:16.0 [tstevens] Remove Concepts
delete narrower relation (null);
2019-11-13 09:53:30.0 [tstevens] Insert Concept
add narrower relation (PROTEROZOIC [4407ca3c-3dc0-402c-bfc3-4dabd23f283a,396415] - MESOPROTEROZOIC [17813394-7d77-4d08-857a-d3b045d49600,423289]);
2019-11-13 09:54:25.0 [tstevens] Insert Concept
add narrower relation (PROTEROZOIC [4407ca3c-3dc0-402c-bfc3-4dabd23f283a,396415] - PALEOPROTEROZOIC [a4a66454-acdb-4493-b5db-765653e5b824,423293]);
2019-11-14 09:14:27.0 [tstevens]
insert Definition (id: null
text: The Proterozoic is a geological eon spanning the time from the appearance of oxygen in Earth's atmosphere to just before the proliferation of complex life (such as trilobites or corals) on the Earth. The Proterozoic is the longest eon of the Earth's geologic time scale and it is subdivided into three geologic eras (from oldest to youngest): the Paleoproterozoic, Mesoproterozoic, and Neoproterozoic.
language code: en);
2022-05-03 14:49:27.0 [tstevens]
update Definition (The Proterozoic is a geological eon spanning from 2,500 million years ago - 541 million years ago. During this time, there was the appearance of oxygen in Earth's atmosphere and the proliferation of complex life (such as trilobites or corals) on the Earth. The Proterozoic is the longest eon of the Earth's geologic time scale and it is subdivided into three geologic eras (from oldest to youngest): the Paleoproterozoic, Mesoproterozoic, and Neoproterozoic.);
2022-05-04 13:15:45.0 [tstevens]
update Definition (The Proterozoic is a geological eon spanning from 2,500 million years ago - 541 million years ago. During this time, there was the appearance of oxygen in Earth's atmosphere and the proliferation of complex life (such as trilobites and corals) on the Earth. The Proterozoic is the longest eon of the Earth's geologic time scale and it is subdivided into three geologic eras (from oldest to youngest): the Paleoproterozoic, Mesoproterozoic, and Neoproterozoic.);
definition The Proterozoic is a geological eon spanning from 2,500 million years ago - 541 million years ago. During this time, there was the appearance of oxygen in Earth's atmosphere and the proliferation of complex life (such as trilobites and corals) on the Earth. The Proterozoic is the longest eon of the Earth's geologic time scale and it is subdivided into three geologic eras (from oldest to youngest): the Paleoproterozoic, Mesoproterozoic, and Neoproterozoic.
narrower
https://gcmd.earthdata.nasa.gov/kms/concept/17813394-7d77-4d08-857a-d3b045d49600 original
broader
4407ca3c-3dc0-402c-bfc3-4dabd23f283a original
https://gcmd.earthdata.nasa.gov/kms/concept/a4a66454-acdb-4493-b5db-765653e5b824 original
broader
4407ca3c-3dc0-402c-bfc3-4dabd23f283a original
https://gcmd.earthdata.nasa.gov/kms/concept/d0ab2b43-d68f-4ab0-8e5a-fd55974c3f29 original
broader
4407ca3c-3dc0-402c-bfc3-4dabd23f283a original
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
type
Resource
type
Resource original
Concept original
in scheme chronounits original