Blog Profile / HeritageDaily: Geology

Filed Under:Academics / Geology
Posts on Regator:16
Posts / Week:0.3
Archived Since:September 5, 2016

Blog Post Archive

Dust deposits give new insights into the history of the Sahara

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.

Research opens fresh view on volcanic plumbing systems

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.

A map that fills a 500-million year gap in Earth’s history

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.

Volcanoes, referees for the life on Earth

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.

Sea level as a metronome of Earth’s history

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.

Older than the moon

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.

Santa Maria – the incredible rising island

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.

Greenland on thin ice?

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.

New study describes 200 million years of geological evolution

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.

Cyclic change within magma reservoirs significantly affects the explosivity of volcanic eruptions

A new study published in Geology uses pockets of melts trapped within crystals to understand the conditions occurring beneath volcanoes before explosive eruptions.

Oregon team says life in Earth’s soils may be older than believed

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.

Geologists discover how a tectonic plate sank

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.

Earthquake series cause uplift variations at continental margins

A new mechanism may explain how great earthquakes with magnitudes larger than M7 are linked to coastal uplift in many regions worldwide.

Case of the missing continental crust solved: It sank

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.

Magma build-up at Japanese volcano poses threat to ‘Naples of the Eastern World’

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.

Geological data provide support for legendary Chinese flood

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 […]

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