GCMD Chronostratigraphic Units Types Keywords

OROSIRIAN

https://gcmd.earthdata.nasa.gov/kms/concept/61627988-014a-4c16-a986-3d90009a4841

broader
https://gcmd.earthdata.nasa.gov/kms/concept/a4a66454-acdb-4493-b5db-765653e5b824 original
narrower
61627988-014a-4c16-a986-3d90009a4841 original
change note
2019-11-13 10:02:19.0 [tstevens] Insert Concept
add broader relation (OROSIRIAN [61627988-014a-4c16-a986-3d90009a4841,423321] - PALEOPROTEROZOIC [a4a66454-acdb-4493-b5db-765653e5b824,423293]);
2019-11-19 08:49:58.0 [tstevens]
insert Definition (id: null
text: The Orosirian Period is the third geologic period in the Paleoproterozoic Era and lasted from 2050 Mya to 1800 Mya (million years ago). The later half of the period was an episode of intensive orogeny on virtually all continents. Two of the largest known impact events on Earth occurred during the Orosirian. At the very beginning of the period, 2023 Mya, a large asteroid collision created the Vredefort impact structure. The event that created the Sudbury Basin structure occurred near the end of the period, 1850 Mya.
language code: en);
definition The Orosirian Period is the third geologic period in the Paleoproterozoic Era and lasted from 2050 Mya to 1800 Mya (million years ago). The later half of the period was an episode of intensive orogeny on virtually all continents. Two of the largest known impact events on Earth occurred during the Orosirian. At the very beginning of the period, 2023 Mya, a large asteroid collision created the Vredefort impact structure. The event that created the Sudbury Basin structure occurred near the end of the period, 1850 Mya.
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
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in scheme chronounits original