Contemporaneous mobile- and stagnant-lid tectonics on the Hadean Earth - John W. Valley; Tyler B. Blum; Kouki Kitajima; Kei Shimizu; Michael J. Spicuzza; Joseph P. Gonzalez; Noriko T. Kita; Ann M. Bauer; Stephan V. Sobolev; Charitra Jain; Aaron J. Cavosie; Alexander V. Sobolev (Nature, 2026)