The climate was controlled by Milankovitch cycles 2.5 billion years ago

The climate of our planet is controlled by the orbital parameters of the solar system, leading to the Milankovitch cycles. Researchers from the universities of Utrecht and Geneva demonstrated that the layering in 2.5 billion years old “Banded Iron Formations” is due to oscillations of Earth’s orbit around the sun and determined the to be 1.4-1.6 million years’ long eccentricity cycles. Long-period, Milankovitch-forced climate cycles therefore exerted a primary control on large-scale compositional variations in Banded Iron Formations.

See article in Nature Geoscience

April 10, 2019