Geochemical evidence for high volatile fluxes from the mantle at the end of the Archaean

Gas and volatiles (water, carbon dioxide, halogens, nitrogen, noble gases etc.) locked away deep within the Earth are released to the atmosphere during volcanic eruptions. The build up of these gases over geological timescales has been crucial in forming and maintaining the Earth’s atmosphere and oceans, both of which have been crucial for the development … Read more Geochemical evidence for high volatile fluxes from the mantle at the end of the Archaean

Fossils reveal swimming patterns of long extinct cephalopod

Computational fluid dynamics can be used to study how extinct animals used to swim. Scientists studied 65 million-year-old cephalopod fossils to gain deeper understanding of modern-day cephalopod ecosystems. Three scientists affiliated with the University of Utah’s department of geology and geophysics will present research on the width, coil diameter and the overall structure of the prehistoric cephalopods … Read more Fossils reveal swimming patterns of long extinct cephalopod

Scientists find eternal Nile to be more ancient than previously thought

Ancient Egyptians considered the Nile river to be the source of all life. The steady northward path of the river has nourished the fertile valleys of northeast Africa for millions of years and in doing so, shaped the course of human civilization. The Nile’s unchanging path, however, has been a geologic mystery because long-lived rivers … Read more Scientists find eternal Nile to be more ancient than previously thought

The world is getting wetter, yet water may become less available for North America and Eurasia

With climate change, plants of the future will consume more water than in the present day, leading to less water available for people living in North America and Eurasia, according to a Dartmouth-led study in Nature Geoscience. The research suggests a drier future despite anticipated precipitation increases for places like the United States and Europe, populous … Read more The world is getting wetter, yet water may become less available for North America and Eurasia

New way to date rocks

A new way to date a common mineral could help pinpoint ore deposits and improve mineral exploration globally, according to University of Queensland scientists. The researchers have identified a new reference material and used a state-of-the-art instrument to better date rock formations in central Asia. UQ’s Professor Jian-xin Zhao said the team started by analysing … Read more New way to date rocks

Unearthing History: Boston College researchers and colleagues pinpoint the source of unique chemical composition of volcanic rocks

A new analysis has revealed the source of oxidation found in rock samples from the coast of Greece, where geological activity spawned explosive arc volcanoes about 45 million years ago, a team of researchers reports in the journal Nature Geoscience. Arc volcanic rocks are highly oxidized, which has led scientists to speculate that the fluids … Read more Unearthing History: Boston College researchers and colleagues pinpoint the source of unique chemical composition of volcanic rocks

Imperfect diamonds paved road to historic Deep Earth discoveries

Deep Carbon Observatory highlights 10 top discoveries to celebrate a 10-year global investigation of Earth’s largest, least-known ecosystem; 1,200 scientists from 55 nations, 1,400 peer-reviewed papers. Thousands of diamonds, formed hundreds of kilometers deep inside the planet, paved the road to some of the 10-year Deep Carbon Observatory program’s most historic accomplishments and discoveries, being … Read more Imperfect diamonds paved road to historic Deep Earth discoveries

It really was the asteroid

Fossil remains of tiny calcareous algae not only provide information about the end of the dinosaurs, but also show how the oceans recovered after the fatal asteroid impact. Experts agree that a collision with an asteroid caused a mass extinction on our planet, but there were hypotheses that ecosystems were already under pressure from increasing … Read more It really was the asteroid

Deep-sea sediments reveal solar system chaos: An advance in dating geologic archives

A day is the time for Earth to make one complete rotation on its axis, a year is the time for Earth to make one revolution around the Sun – reminders that basic units of time and periods on Earth are intimately linked to our planet’s motion in space relative to the Sun. In fact, … Read more Deep-sea sediments reveal solar system chaos: An advance in dating geologic archives

High-pressure experiments complete picture of the Earth’s mantle

For around 30 years scientists have known of continent sized regions in the Earth’s interior nearly 3000 km below the surface. These regions have been the subject of extensive research and many ideas have been put forward to explain what they are, with some people even thinking that they may have existed the Earth formed … Read more High-pressure experiments complete picture of the Earth’s mantle