Editing Ediacaran (section)

==Absolute dating==
The [[Absolute dating|dating]] of the rock type section of the Ediacaran Period in South Australia has proven uncertain due to lack of overlying igneous material. Therefore, the age range of 635 to 538.8 million years is based on [[Stratigraphy|correlations]] to other countries where dating has been possible. The base age of approximately 635 million years is based on [[Uranium–lead dating|U–Pb]] ([[uranium]]–[[lead]]) and [[Rhenium–osmium dating|Re–Os]] ([[rhenium]]–[[osmium]]) dating from Africa, China, North America, and Tasmania.<ref>{{Cite journal |last1=Rooney |first1=Alan D. |last2=Strauss |first2=Justin V. |last3=Brandon |first3=Alan D. |last4=Macdonald |first4=Francis A. |date=2015 |title=A Cryogenian chronology: Two long-lasting synchronous Neoproterozoic glaciations |url=http://pubs.geoscienceworld.org/geology/article/43/5/459/131888/A-Cryogenian-chronology-Two-longlasting |journal=Geology |language=en |volume=43 |issue=5 |pages=459–462 |doi=10.1130/G36511.1 |bibcode=2015Geo....43..459R |issn=1943-2682}}</ref><ref>{{Cite journal |last1=Rooney |first1=Alan D. |last2=Yang |first2=Chuan |last3=Condon |first3=Daniel J. |last4=Zhu |first4=Maoyan |last5=Macdonald |first5=Francis A. |date=2020-06-01 |title=U-Pb and Re-Os geochronology tracks stratigraphic condensation in the Sturtian snowball Earth aftermath |url=https://pubs.geoscienceworld.org/gsa/geology/article/48/6/625/583510/UPb-and-ReOs-geochronology-tracks-stratigraphic |journal=Geology |language=en |volume=48 |issue=6 |pages=625–629 |doi=10.1130/G47246.1 |bibcode=2020Geo....48..625R |s2cid=218815302 |issn=0091-7613}}</ref><ref>{{Cite journal |last1=Zhang |first1=Shihong |last2=Jiang |first2=Ganqing |last3=Zhang |first3=Junming |last4=Song |first4=Biao |last5=Kennedy |first5=Martin J. |last6=Christie-Blick |first6=Nicholas |date=2005 |title=U-Pb sensitive high-resolution ion microprobe ages from the Doushantuo Formation in south China: Constraints on late Neoproterozoic glaciations |url=https://pubs.geoscienceworld.org/geology/article/33/6/473-476/103786 |journal=Geology |language=en |volume=33 |issue=6 |pages=473 |doi=10.1130/G21418.1 |bibcode=2005Geo....33..473Z |issn=0091-7613}}</ref><ref>{{Citation |last=Schmitz |first=M.D. |title=Radiometric ages used in GTS2012 |date=2012 |url=https://linkinghub.elsevier.com/retrieve/pii/B9780444594259150024 |work=The Geologic Time Scale |pages=1045–1082 |publisher=Elsevier |language=en |doi=10.1016/b978-0-444-59425-9.15002-4 |isbn=978-0-444-59425-9 |access-date=2022-04-02}}</ref><ref>{{Cite journal |last1=Calver |first1=C.R. |last2=Crowley |first2=J.L. |last3=Wingate |first3=M.T.D. |last4=Evans |first4=D.A.D. |last5=Raub |first5=T.D. |last6=Schmitz |first6=M.D. |date=2013 |title=Globally synchronous Marinoan deglaciation indicated by U-Pb geochronology of the Cottons Breccia, Tasmania, Australia |url=http://pubs.geoscienceworld.org/geology/article/41/10/1127/131079/Globally-synchronous-Marinoan-deglaciation |journal=Geology |language=en |volume=41 |issue=10 |pages=1127–1130 |doi=10.1130/G34568.1 |bibcode=2013Geo....41.1127C |issn=1943-2682}}</ref>