623:
976:
71:
667:, was suggested in the geological timescale review 2012 edited by Gradstein et al., but as of February 2022, this has not yet been officially adopted by the
1017:
851:
455:
817:
792:
1046:
1010:
844:
663:
For the time period from about 2060 to 1780 Mya, an alternative period based on stratigraphy rather than chronometry, named the
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319:
1030:
983:
715:
James G. Ogg (2004). "Status on
Divisions of the International Geologic Time Scale".
657:
604:
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70:
860:
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on Earth occurred during the
Orosirian. Early in the period, 2023 Mya, a large
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A map of Earth as it appeared during the early
Orosirian, c. 2 Ga
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to 1800 Mya (million years ago). Instead of being based on
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structure occurred near the end of the period, 1850 Mya.
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The later half of the period was an episode of intensive
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784:Earth Environments: Past, Present and Future
812:. Vol. 1. Elsevier. pp. 361–365.
808:Gradstein, F.M.; et al., eds. (2012).
743:
741:
1018:
1004:
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852:
838:
830:
781:David Huddart; Tim Stott (16 April 2013).
787:. John Wiley & Sons. pp. 1599–.
765:
629:is believed to have formed in this period
596:, meaning "mountain range") is the third
16:Third period of the Paleoproterozoic Era
737:
18:
340:structure created by asteroid impact?
7:
972:
970:
385:
365:
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308:
990:. You can help Knowledge (XXG) by
686:formed at the end of this period.
411:Axis scale: millions of years ago.
14:
974:
543:
409:Events of the Orosirian Period.
69:
767:10.18814/epiiugs/1991/v14i2/005
1:
748:Plumb, K. A. (June 1, 1991).
656:. The event that created the
810:The Geologic Time Scale 2012
750:"New Precambrian time scale"
592:
1068:
969:
654:Vredefort impact structure
627:Vredefort impact structure
615:, these dates are defined
581:
359:created by asteroid impact
357:Vredefort impact structure
1047:Proterozoic geochronology
867:
729:10.1080/00241160410006492
644:Two of the largest known
520:Upper boundary definition
504:Lower boundary definition
407:
85:
68:
26:
523:Defined chronometrically
507:Defined chronometrically
223:−1800 —
213:−1820 —
203:−1840 —
193:−1860 —
183:−1880 —
173:−1900 —
163:−1920 —
153:−1940 —
143:−1960 —
133:−1980 —
123:−2000 —
113:−2020 —
103:−2040 —
93:−2060 —
652:collision created the
630:
625:
607:and lasted from 2050
397:Great Oxidation Event
874:Paleoproterozoic Era
1052:Geochronology stubs
879:Mesoproterozoic Era
528:Upper GSSA ratified
512:Lower GSSA ratified
496:Time span formality
1042:Geological periods
884:Neoproterozoic Era
697:"Orosirian Period"
631:
486:Stratigraphic unit
476:Chronological unit
463:Time scale(s) used
999:
998:
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819:978-0-44-459390-0
794:978-1-118-68812-0
637:on virtually all
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436:Usage information
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318:Beginning of the
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1037:Paleoproterozoic
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701:GeoWhen Database
617:chronometrically
602:Paleoproterozoic
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539:Orosirian Period
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861:Proterozoic Eon
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598:geologic period
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760:(2): 139–140.
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723:(2): 183–199.
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681:supercontinent
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675:Paleogeography
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466:ICS Time Scale
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451:Regional usage
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441:Celestial body
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29:2050 – 1800
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986:article is a
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984:geochronology
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658:Sudbury Basin
655:
651:
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646:impact events
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578:Ancient Greek
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992:expanding it
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704:. Retrieved
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678:
664:
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613:stratigraphy
538:
536:
294:
286:
285:
276:
236:
45:Proterozoic
1031:Categories
946:Cryogenian
909:Statherian
690:References
639:continents
471:Definition
296:Statherian
81:Chronology
951:Ediacaran
920:Calymmian
904:Orosirian
665:Columbian
587:romanized
423:Etymology
287:Orosirian
22:Orosirian
925:Ectasian
899:Rhyacian
894:Siderian
754:Episodes
684:Columbia
650:asteroid
593:oroseirá
582:ὀροσειρά
454:Global (
377:Columbia
278:Rhyacian
930:Stenian
717:Lethaia
706:July 8,
635:orogeny
600:in the
589::
395:End of
390:←
370:←
351:←
332:←
313:←
228:–
218:–
208:–
198:–
188:–
178:–
168:–
158:–
148:–
138:–
128:–
118:–
108:–
98:–
52:Archean
941:Tonian
816:
791:
499:Formal
490:System
480:Period
431:Formal
379:formed
303:
982:This
445:Earth
988:stub
814:ISBN
789:ISBN
708:2011
679:The
669:IUGS
537:The
531:1991
515:1991
59:Had.
38:Pha.
762:doi
725:doi
609:Mya
605:Era
563:ɪər
456:ICS
1033::
758:14
756:.
752:.
740:^
721:37
719:.
699:.
671:.
641:.
619:.
584:,
580::
576:;
569:ən
554:oʊ
551:ɒr
266:i
264:o
262:z
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256:e
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248:p
246:o
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242:l
240:a
238:P
31:Ma
1019:e
1012:t
1005:v
994:.
853:e
846:t
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797:.
770:.
764::
731:.
727::
710:.
572:/
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560:s
557:ˈ
548:ˌ
545:/
541:(
458:)
268:c
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