The base of the Norian stage is set at ~228 Ma on the new chronstratigraphy chart of the International Commission on Stratigraphy. Still needs further support and eventially a golden spike, but this is the first time the ICS has used the long Norian hypothesis on its published chart.
You can download the latest timescale from here:
http://www.stratigraphy.org/ics%20chart/ChronostratChart2012.pdf
Field of Science
-
-
TMI Friday: Batteries should NOT be included4 hours ago in Memoirs of a Defective Brain
-
-
-
1 comment:
Markup Key:
- <b>bold</b> = bold
- <i>italic</i> = italic
- <a href="http://www.fieldofscience.com/">FoS</a> = FoS
Subscribe to:
Post Comments (Atom)
Clicking on the above link, or first copying then pasting, brings a site in Japanese (?) which translated into English states that there is an error. Sincerely, Howard McPherson
ReplyDelete