资讯

Devdiscourse4 天
Unearthing Earth's Origins: The Hadean Mystique in Québec's Ancient Rocks
The Hadean Eon, Earth's first geological period, remains shrouded in mystery due to scarce rock records. However, Québec's ...
Scientists unlock secrets of oldest rocks on Earth
Studies of these zircon minerals has given us clues about the Hadean environment, and the formation and evolution of Earth’s ...
Oldest Rock On Earth Confirmed To Be Over 4 Billion Years Old
Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the ...
Oldest rocks on Earth found in Canada, are more than four billion years old
We are part of a research team that has confirmed the oldest known rocks on Earth are located in northern Québec.__ ...
insider.si.edu4 天
Hadean Earth / T. Mark Harrison - Smithsonian Institution
These new observations challenge the longstanding Hadean paradigm - based on no observational evidence - of a desiccated, lifeless, continent-free wasteland in which surface petrogenesis was largely ...
The Conversation5 天
The oldest rocks on Earth are more than four billion years old
Rocks from the Hadean Eon, the first period in the geological timescale, have been dated in Québec. These are some of the oldest terrestrial materials dated by scientists.
New study confirms 4.16 billion-year-old rocks in Canada as Earth’s oldest
The ancient history of Earth has always been hard to read. Most of the planet’s earliest crust has been lost, buried, or ...
A Fragment of Earth’s Original Crust Still Exists—and It’s Buried in Canada
Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried. Except ...
Phys.org5 天
The oldest rocks on Earth are more than 4 billion years old
Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the Greek god of the underworld, reflecting the extreme heat that likely ...