I mentioned thus before that Greenland was a lot warmer two million years ago.
In 1993, drillers at the summit completed the Greenland Ice Sheet Project 2 ice core, or GISP2, nicknamed the two-mile time machine. The seeds, twigs and spores we found came from a few inches of soil at the bottom of that core—soil that had been tucked away dry, untouched for three decades in a windowless Colorado storage facility.
Our new analysis builds on the work of others who, over the past decade, have chipped away at the belief that Greenland’s ice sheet was present continuously since at least 2.6 million years ago when the Pleistocene ice ages began. In 2016, scientists measuring rare isotopes in rock from above and below the GISP2 soil sample used models to suggest that the ice had vanished at least once within the past 1.1 million years.
“We now have direct evidence that not only was the ice gone, but that plants and insects were living there,”
Greenland fossil discovery stuns scientists and confirms that center of ice sheet melted in recent past
Ancient poppy seeds and willow wood offer clues to the Greenland ice sheet’s last meltdown
Now this where the ice was gone a lot more recently under an unclear scenario.