FOOTNOTES
1For information about this report, contact Jon Matti (jmatti@strider.swfo.arizona.edu).
2standard—“n. 1. Something considered by an authority or by general consent as a basis
of comparison. 3. a rule or principle that is used as a basis for judgment:
they tried to establish standards for a new philosophical approach.
— adj. 23. serving as a basis of weight, measure, value, comparison, or judgment.
24. of recognized excellence or established authority. 25. usual, common, or
customary:...” (Webster’s Encyclopedic Unabridged Dictionary of the English
Language, 2001, p. 1857).
3This is similar to the DMDT definition of earth material: “the substance of the solid Earth (rocks, minerals, organic material, glass, void space), defined based on intrinsic properties independent of their disposition within the Earth” (North American Data Model Steering Committee, 2003).