Improve documentation for Geological Context generally

[dennereed]

This is probably one of the most important Darwin Core categories for paleobiology. The documentation should clarify the distinction between time units and sedimentological unites (i.e. between eons and eonothems etc.). Also what are possible vocabularies for geological time periods, stratigraphic intervals etc.

[dennereed]

Consider http://perio.do as a backbone/source for named time period URIs.

[hollyel]

See discussion from DwC-QA input form (tdwg/dwc-qa#130). Question was:

Are people reporting earliest and latest chronostratigraphy? If they are, when the earliest and latest are the same do they just report the same information twice? Are people following the GSA or International Chrono charts ( i.e. Early, Middle, Late as opposed to Lower, Middle, Upper)? Also, how are people dealing with informal things like middle Pliocene?

[tucotuco]

People here may be interested in the discussion here.