Geology

Earth’s Inner Core is 1-1.5 Billion Years Old, say Researchers

Earth’s Inner Core is 1-1.5 Billion Years Old, say Researchers

A team of researchers found that the inner core of the earth was formed about 1-1.5 billion years ago. The inner core is the earth's deepest layer and a relatively recent addition to our planet, said researchers.

Scientists from the University Of Liverpool, UK, along with colleagues analyzed magnetic records from ancient igneous rocks. They found that there was a sharp increase in the strength of the earth’s magnetic field between 1 and 1.5 billion years ago.

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Study shows 3.2 billion-year-old Iron-bearing rocks carry unmistakable evidence of oxygen

Study shows 3.2 billion-year-old Iron-bearing rocks carry unmistakable evidence of oxygen

According to a new study, iron-bearing rocks that formed at the ocean floor 3.2 billion years ago carry unmistakable evidence of oxygen. University of Wisconsin-Madison geoscientists said that the only logical source for that oxygen is the earliest known example of photosynthesis by living organisms.

Clark Johnson, a professor of geoscience at UW-Madison and a member of the NASA Astrobiology Institute, said that the rocks from 3.4 billion years ago have shown that the ocean contained basically no free oxygen.

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Rise in global sea levels faster than Expected

Rise in global sea levels faster than Expected

According to researchers, rise in global sea levels is faster than previously thought. It is on account of increasing temperatures as a result of burning fossil fuels. The researchers also said that a rise of at least 3-feet is probably 'unavoidable'.

According to National Aeronautics and Space Administration (NASA) scientists, since 1992, global sea levels have risen nearly 3 inches on average. Some areas have even seen an increase of up to 9 inches. The oceans are expanding due to heat and melting ice.

People still trying to reset a frontier in Mississippi

People still trying to reset a frontier in Mississippi

Almost a decade has been passed to the incident when the destructive hurricane Katrina devastated the coastal areas of Mississippi. Today, communities in the area have more people than they had before the storm, but the areas closest to the waters are still struggling to recover.

The place which was once filled with houses and a small condominium complex, South Seashore Avenue in Long Beach, was destroyed by wind and waves in 2005. From beach highway to railroad track, everything was paralleling the shorelines.

Scientists discover ancient underwater volcanoes

Scientists discover ancient underwater volcanoes

According to reports, researchers have found a cluster of submerged volcanoes that are expected to be nearly 50 million years old. The volcanoes have been discovered about 250 kilometres off the coast of Sydney.

The discovery was made unexpectedly when Australian researchers were searching for lobster larvae. As per reports, the four enormous underwater volcanoes were found with the help of sonar mapping of the sea floor.

Mount Everest’s Glacial Landscape may be entirely different by Century-end

Mount Everest’s Glacial Landscape may be entirely different by Century-end

Researchers from the European Geosciences Union raised series concerns by unveiling that the Mount Everest's glaciers will melt significantly due to climate change by the century's end.

As per the researchers, between 70 and 99% of the glaciers around Mount Everest could melt by 2100. Joseph Shea from the International Center for Integrated Mountain Development affirmed that glaciers in the region are quite sensitive with regard to any changes in temperature.

Offshore Faults Need More Study, Suggest Earthquake Experts

Offshore Faults Need More Study, Suggest Earthquake Experts

A recent study clarifies the doubts about the tsunami hazard posed by a less-understood jumble of seafloor faults off the coast of Southern California and due to hype created by the big-budget disaster movie 'San Andreas'.

Lead author of the study geologist Mark Legg said that a real-life offshore earthquake and tsunami would not be same as depicted in the Hollywood's script for a washout of Los Angeles or San Diego. Whereas, he said the hazard needs to be given far more attention than it has so far received.

Antarctica’s ‘Stable Region’ Under Threat of Ice Loss

The dangers of global warming yet again manifest themselves as NASA announces that one of the Antarctica’s largest floating ice shelves will disintegrate completely by the end of the decade.

A team of British scientists from the University of Bristol, UK have observed a sudden increase of ice loss in a previously stable region of Antarctica. They have discovered that this 67,000-square mile section of the Antarctica Peninsula which researchers had previously thought was stable is in fact disappearing rapidly into the ocean since 2009.

Larsen C Ice Shelf could Break Up within a Century

Larsen C Ice Shelf could Break Up within a Century

On Wednesday, scientists warned that the largest ice shelf in the Antarctic peninsula, Larsen C, could be lost within a century. The Cryosphere-published study was based on the data from satellite measurements and eight radar surveys taken over 15 years, from 1998 to 2012.

Due to warmer seas and air, the Larsen C ice shelf is melting and within a century it could break up. After going through the data, the researchers came to know the Larsen C has lost on an average of four metres of ice.

Microbes discovered in deep Atlantic Ocean could reveal more about evolution of Complex Life Forms

Microbes discovered in deep Atlantic Ocean could reveal more about evolution of Complex Life Forms

A group of biologists conducted a research project in the deep regions of the Atlantic Ocean and found a group of microbes with very basic life forms. The research team believes that their discovery could provide new clues to how life transformed from simple to complex.

Thijs Ettema, a biologist at Uppsala University in Sweden, was of the view that there is evidence that life soon appeared after earth formed, around 4.5 billion years ago, but at that time the planet was not very hospitable.

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