Era Críptica (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Era Críptica" in Spanish language version.

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1sciencemag.org

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doi.org

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Amelin, Yuri; Krot, Hutcheon, and Ulyanov (septiembre de 2002 6). «Lead Isotopic Ages of Chondrules and Calcium-Aluminum-Rich Inclusions». Science 297 (5587): 1678-1683. PMID 12215641. doi:10.1126/science.1073950.

nih.gov

ncbi.nlm.nih.gov

Amelin, Yuri; Krot, Hutcheon, and Ulyanov (septiembre de 2002 6). «Lead Isotopic Ages of Chondrules and Calcium-Aluminum-Rich Inclusions». Science 297 (5587): 1678-1683. PMID 12215641. doi:10.1126/science.1073950.

purdue.edu

stratigraphy.science.purdue.edu

Global Boundary Stratotype Section and Point (GSSP) of the International Commission of Stratigraphy, Status on 2009.

sciencemag.org

Amelin, Yuri; Krot, Hutcheon, and Ulyanov (septiembre de 2002 6). «Lead Isotopic Ages of Chondrules and Calcium-Aluminum-Rich Inclusions». Science 297 (5587): 1678-1683. PMID 12215641. doi:10.1126/science.1073950.

stratigraphy.org

Cohen, K. M., Finney, S. C., Gibbard, P. L. & Fan, J.-X. (2013; actualizado 2022). «The ICS International Chronostratigraphic Chart». Episodes 36. pp. 199-204. Consultado el 30 de diciembre de 2022.

web.archive.org

International Stratigraphic Chart, 2008
Wilde, S. A.; Valley, J.W.; Peck, W.H. and Graham, C.M. (2001) "Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago" Nature 409: pp. 175-178.