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dc.contributor.author
Shields, Graham A.  
dc.contributor.author
Strachan, Robin A.  
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Porter, Susannah M.  
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Halverson, Galen P.  
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Macdonald, Francis A.  
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Plumb, Kenneth A.  
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de Alvarenga, Carlos J.  
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Banerjee, Dhiraj M.  
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Bekker, Andrey  
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Bleeker, Wouter  
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Brasier, Alexander  
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Chakraborty, Partha P.  
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Collins, Alan S.  
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Condie, Kent  
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Das, Kaushik  
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Evans, David A. D.  
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Ernst, Richard  
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Fallick, Anthony E.  
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Frimmel, Hartwig  
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Fuck, Reinhardt  
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Hoffman, Paul F.  
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Kamber, Balz S.  
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Kuznetsov, Anton B.  
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Mitchell, Ross N.  
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Poire, Daniel Gustavo  
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Poulton, Simon W.  
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Riding, Robert  
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Sharma, Mukund  
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Storey, Craig  
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Stueeken, Eva  
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Tostevin, Rosalie  
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Turner, Elizabeth  
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Xiao, Shuhai  
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Zhang, Shuanhong  
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Zhou, Ying  
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Zhu, Maoyan  
dc.date.available
2022-07-12T14:49:19Z  
dc.date.issued
2022-01  
dc.identifier.citation
Shields, Graham A.; Strachan, Robin A.; Porter, Susannah M.; Halverson, Galen P.; Macdonald, Francis A.; et al.; A template for an improved rock-based subdivision of the pre-Cryogenian timescale; Geological Society Publications House; Journal of the Geological Society; 179; 1; 1-2022; 1-22  
dc.identifier.issn
0016-7649  
dc.identifier.uri
http://hdl.handle.net/11336/161888  
dc.description.abstract
The geological timescale before 720 Ma uses rounded absolute ages rather than specific events recorded in rocks to subdivide time. This has led increasingly to mismatches between subdivisions and the features for which they were named. Here we review the formal processes that led to the current timescale, outline rock-based concepts that could be used to subdivide pre-Cryogenian time and propose revisions. An appraisal of the Precambrian rock record confirms that purely chronostratigraphic subdivision would require only modest deviation from current chronometric boundaries, removal of which could be expedited by establishing event-based concepts and provisional, approximate ages for eon-, era-and period-level subdivisions. Our review leads to the following conclusions: (1) the current informal four-fold Archean subdivision should be simplified to a tripartite scheme, pending more detailed analysis, and (2) an improved rock-based Proterozoic Eon might comprise a Paleoproterozoic Era with three periods (early Paleoproterozoic or Skourian, Rhyacian, Orosirian), Mesoproterozoic Era with four periods (Statherian, Calymmian, Ectasian, Stenian) and a Neoproterozoic Era with four periods ( pre-Tonian or Kleisian, Tonian, Cryogenian and Ediacaran). These proposals stem from a wide community and could be used to guide future development of the pre-Cryogenian timescale by international bodies.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Geological Society Publications House  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
PRECAMBRIAN  
dc.subject
PRE-CRYOGENIAN  
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TIMESCALE  
dc.subject
ISOTOPES  
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GEOBIOLOGY  
dc.subject.classification
Geociencias multidisciplinaria  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
A template for an improved rock-based subdivision of the pre-Cryogenian timescale  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-07-04T19:40:48Z  
dc.journal.volume
179  
dc.journal.number
1  
dc.journal.pagination
1-22  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Shields, Graham A.. Colegio Universitario de Londres; Reino Unido  
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Fil: Strachan, Robin A.. University of Portsmouth; Reino Unido  
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Fil: Porter, Susannah M.. University of California; Estados Unidos  
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Fil: Halverson, Galen P.. McGill University; Canadá  
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Fil: Macdonald, Francis A.. University of California; Estados Unidos  
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Fil: Plumb, Kenneth A.. Geoscience Australia; Australia  
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Fil: de Alvarenga, Carlos J.. Universidade do Brasília; Brasil  
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Fil: Banerjee, Dhiraj M.. University of Delhi; India  
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Fil: Bekker, Andrey. University of California; Estados Unidos  
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Fil: Bleeker, Wouter. Geological Survey of Canada; Canadá  
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Fil: Brasier, Alexander. University of Aberdeen; Reino Unido  
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Fil: Chakraborty, Partha P.. University of Delhi; India  
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Fil: Collins, Alan S.. University of Adelaide; Australia  
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Fil: Condie, Kent. New Mexico Institute of Mining and Technology; Estados Unidos  
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Fil: Das, Kaushik. Hiroshima University; Japón  
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Fil: Evans, David A. D.. University of Yale; Estados Unidos  
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Fil: Ernst, Richard. Carleton University; Canadá. Tomsk State University; Rusia  
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Fil: Fallick, Anthony E.. Scottish Universities Environmental Research Centre; Reino Unido  
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Fil: Frimmel, Hartwig. Universität Würzburg; Alemania  
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Fil: Fuck, Reinhardt. Universidade do Brasília; Brasil  
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Fil: Hoffman, Paul F.. University of Victoria; Canadá. Harvard University; Estados Unidos  
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Fil: Kamber, Balz S.. Queensland University of Technology; Australia  
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Fil: Kuznetsov, Anton B.. Institute of Precambrian Geology and Geochronology; Rusia  
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Fil: Mitchell, Ross N.. Chinese Academy of Sciences; República de China  
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Fil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina  
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Fil: Poulton, Simon W.. University of Leeds; Reino Unido  
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Fil: Riding, Robert. University of Tennessee; Estados Unidos  
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Fil: Sharma, Mukund. Birbal Sahni Institute of Palaeobotany; India  
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Fil: Storey, Craig. University of Portsmouth; Reino Unido  
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Fil: Stueeken, Eva. University of St. Andrews; Reino Unido  
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Fil: Tostevin, Rosalie. University of Cape Town; Sudáfrica  
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Fil: Turner, Elizabeth. Laurentian University; Canadá  
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Fil: Xiao, Shuhai. Virginia Tech University; Estados Unidos  
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Fil: Zhang, Shuanhong. Chinese Academy of Geological Sciences; China  
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Fil: Zhou, Ying. Colegio Universitario de Londres; Reino Unido  
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Fil: Zhu, Maoyan. Chinese Academy of Sciences. Nanjing Institute of Geology and Palaeontology; República de China  
dc.journal.title
Journal of the Geological Society  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://jgs.lyellcollection.org/lookup/doi/10.1144/jgs2020-222  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1144/jgs2020-222