At the time of writing, the Clover Creek Greenstone was in the process of being elevated to group rank and subdivided into two new formations, the Harsin Ranch and the Tucker Creek Formations of Permian and late Triassic ages respectively. Names and classification credited to Koch and Bowen (1962, written commun.).
In the Sparta quadrangle, Clover Creek Greenstone rocks are believed to be Triassic age, based on Triassic fossils collected from limestone lenses in the greenstone at both the eastern and western borders of the quadrangle; they would be equivalent to the Tucker Creek Formation and may be referred to by that name.
Type locality and derivation of name not stated.
[As of 2006, these revisions have not been published. And, no references in GNC index card files to indicate usage since 1962. Tucker Creek Formation therefore considered invalid and obsolete.]

Source: Publication; US geologic names lexicon (USGS Bull. 1350, p. 777).