How old are Earth’s oldest rocks?

The Allende Meteorite tells us that the Earth is about 4.567 billion years old, but the oldest rocks at the surface of the Earth are a bit younger than that. Now a team has found rocks at the surface which as 4.28 billion years old:

Is life even older than we thought?

The palaeontology of the earliest signs of life is a blend of chemistry and mineralogy. Uncertainty is part of life for people dealing with the most ancient evidence. Geologists are communally convinced that they have solid signs of life which are ~4.2 billion years old, but some samples seem to suggest an even earlier date.

Is the Burgess Shale the most important fossil locality in the world?

The Burgess Shale, in British Columbia, Canada, is famous for its preservation of soft bodied fossils from the Cambrian Period, when multicellular life was relatively new. It preserves an number of creatures which can be recognised as ancestors of our current biota as well as many other forms which were not successful in evolutionary terms.

You can find out much more about at this link, which contains a variety of links to more detailed pages:

Have Geologists found Britain’s biggest impact event?

Geologists think they have discovered the biggest impact event, recorded in rocks ~1.2billion years old in the Northwest Highlands of Scotland near Ullapool:

Does Greenland hold the key to explaining the origin of oceans?

Some of the world’s oldest rocks are found on Greenland and geologists have spent decades unraavelling their story to try and discover more about our early planet:

Welcome to the Anthropocene?

Geologists have been pondering the question of whether the current period of Earth history, dominated by the signature of human impacts, warrants it’s own stratigraphic division and have been discussing what it should be called: