Revisiting The Eoarchean Akilia Quartz-pyroxene Rock With Potassium Isotopes: Implications For Early-ocean Sedimentation
The Eoarchean quartz-pyroxene rock from Akilia Island in Greenland has been proposed as one of Earth’s oldest banded iron formations (BIF) and a potential host for the earliest biosignatures. However, the origin of its protolith, whether it metamorphosed from an igneous or sedimentary precursor, remains debated. Here, we revisit this longstanding Akilia controversy using potassium [...]The post Revisiting The Eoarchean Akilia Quartz-pyroxene Rock With Potassium Isotopes: Implications For Early-ocean Sedimentation appeared first on Astrobiology.