|Filed Under:||Academics / Geology|
|Posts on Regator:||17|
|Posts / Week:||0.3|
|Archived Since:||September 5, 2016|
Diamonds may be ‘forever’ but some may have formed more recently than geologists thought. A study of 26 diamonds, formed under extreme melting conditions in the Earth’s mantle, found two populations, one of which has geologically ‘young’ ages. The post Diamonds show Earth still capable of ‘superhot’ surprises appeared first on HeritageDaily - Heritage & Archaeology News.
The Sahara is the world's largest desert and dust source with significant impacts on trans-Atlantic terrestrial and large-scale marine ecosystems. The post Dust deposits give new insights into the history of the Sahara appeared first on HeritageDaily - Heritage & Archaeology News.
Volcanic eruptions such as Mount St. Helens' in 1980 show the explosiveness of magma moving through the Earth's crust. The post Research opens fresh view on volcanic plumbing systems appeared first on HeritageDaily - Heritage & Archaeology News.
Earth is estimated to be around 4.5 billion years old, with life first appearing around 3 billion years ago. The post A map that fills a 500-million year gap in Earth’s history appeared first on HeritageDaily - Heritage & Archaeology News.
At the Triassic-Jurassic boundary, 200 million years ago, some 60% of species living on Earth disappeared. Scientists suspected that magmatic activity and the release of CO2 were responsible for this environmental disaster.
Sedimentary layers record the history of the Earth. They contain stratigraphic cycles and patterns that precisely reveal the succession of climatic and tectonic conditions that have occurred over millennia, thereby enhancing our ability to understand and predict the evolution of our planet.
The Earth's mantle -- the layer between the crust and the outer core -- is home to a primordial soup even older than the moon. Among the main ingredients is helium-3 (He-3), a vestige of the Big Bang and nuclear fusion reactions in stars. And the mantle is its only terrestrial source.
We know that since Charles Darwin's time. Based on observations made during the Beagle's voyage, he correctly formulated that sinking islands start to be fringed by rings of coral reefs, leading to atoll formation.
The ice sheet covering Greenland is four times bigger than California -- and holds enough water to raise global sea-level more than twenty feet if most of it were to melt. Today, sea levels are rising and the melting of Greenland is a major contributor. Understanding how fast this melting might proceed is a pressing question for policymakers and coastal communities.
200 million years of geological evolution of a fault in the Earth’s crust has recently been dated. Published in Nature Communications, these new findings may be used to shed light on poorly understood pathways for methane release from the heart of our planet.
A new study published in Geology uses pockets of melts trapped within crystals to understand the conditions occurring beneath volcanoes before explosive eruptions.
Way before trees or lichens evolved, soils on Earth were alive, as revealed by a close examination of microfossils in the desert of northwestern Australia, reports a team of University of Oregon researchers.
In a paper published in Proceedings of the National Academy of Sciences (PNAS) Saint Louis University researchers report new information about conditions that can cause the earth's tectonic plates to sink into the earth.
A new mechanism may explain how great earthquakes with magnitudes larger than M7 are linked to coastal uplift in many regions worldwide.
How do you make half the mass of two continents disappear? To answer the question you first need to discover that it's missing. That's what a trio of University of Chicago geoscientists and their collaborators did.
One of Japan's most active volcanoes could be close to a major eruption, threatening the safety of hundreds and thousands of residents of a nearby city, a new study has shown.
Researchers have provided geological evidence for China’s “Great Flood,” a disastrous event on the Yellow River from which the Xia dynasty is thought to have been born. The flood occurred in roughly 1920 BC, they say, which is several centuries later than traditionally thought – meaning the Xia dynasty, and its renowned Emperor Yu, likely […]