[Rockhounds] USA’s Oldest Rock? A Simple Question with a Complex Answer

[Paul]

Frost, C.D., Mueller, P.A., Bickford, M.E., and Stern R.J.,
2025, USA’s Oldest Rock? A Simple Question with a 
Complex Answer, GSA Toady, 35(3-4), pp. 4-10
https://www.geosociety.org/GSA/Publications/GSA_Today/GSA/GSAToday/science/G613A/article.aspx

GSA Today, March-April 2025, Full issue
https://rock.geosociety.org/net/gsatoday/archive/35/3/pdf/i1052-5173-35-3.pdf

Yours,

Ppaul H.