You mean it's been known for 2-3 billion years that this plate near Portugal has been peeling apart?
Says "2019" here...
Geophysical Research Abstracts
Vol. 21, EGU2019-6001, 2019
EGU General Assembly 2019
Delamination of oceanic lithosphere in SW Iberia: a key for subduction initiation?
Joao Duarte (1,2,3), Nicolas Riel (4), Chiara Civiero (5), Filipe Rosas (1,2), Wouter Schellart (6), Jaime Almeida(1,2), Sonia Silva (1), Pedro Terrinha (7,1)(1) Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal, (2) Departamentode Geologia, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal, (3) School of Earth, Atmosphereand Environment, Monash University, Melbourne, VIC 3800, Australia, (4) Institute for Geosciences, JohannesGutenberg-Universität Mainz, Mainz, Germany, (5) Dublin Institute for Advanced Studies, Dublin, Ireland, (6) Department ofEarth Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands, (7) Instituto Português do Mar e da Atmosfera, RuaC do Aeroporto, 1749-077 Lisboa, Portugal
http://meetingorganizer.copernicus.org/EGU2019/EGU2019-6001.pdf
...of course, the supposed "peeling" would likely have been going on for millions of years. But the discovery of this particular piece of evidence for is recent. ie, news.