“…A most valuable discussion of the problems of nomenclature for banded ferruginous-cherty sedimentary rocks has been given by Brandt et al (1972), recommending the usage of the term "iron-formation" as a generic lithologic name, strictly on a parallel, for example, with "limestone". The words are in this case hyphenated but capitalized when using them in a stratigraphic sense as, for example, "Brockman Iron Formation" as suggested by Trendall and Blockley (1970).…”