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Latest Geological history of Earth Stories

Scientists Look At Supervolcano Life Cycle In Whole New Way
2013-10-11 14:49:13

Lee Rannals for redOrbit.com - Your Universe Online Scientists say they've discovered a new way to look at the life cycle of a supervolcano at a Yellowstone hotspot. University of Oregon researchers said that crystals of zircon from the Snake River Plain helped to solidify evidence of "recycled" super-volcanic magma chambers. This Yellowstone hotspot creates a conveyor belt style of volcanism because of the southwest migration of the North American plate at about 0.8 to 1.6 inches...

Young Sun Paradox Early Climate
2013-10-04 13:46:54

Brett Smith for redOrbit.com - Your Universe Online When life originated on Earth between 3.8 and 2.4 billion years ago during the Archean era, our sun was only functioning at about 75 percent of its current power. With this ‘low wattage’ sun, the Earth should have been covered in glaciers, yet scientists have found no evidence of this taking place. In a new study published recently by the journal Science, a team of international researchers’ analysis of rock samples dating back...

2013-09-26 23:24:46

The authors of two companion papers featured in Rangeland Ecology & Management assess three main components of climate change: rising concentrations of atmospheric carbon dioxide, atmospheric warming, and altered patterns of precipitation. Increasing awareness of and preparedness for climatic variability will promote both the supply of ecosystem services and the maintenance of human livelihoods well into the future. Lawrence, KS (PRWEB) September 26, 2013 Since beginning of...

Life-Bearing Oxygen Appeared On Earth Three Billion Years Ago
2013-09-26 07:19:54

April Flowers for redOrbit.com - Your Universe Online New research from the University of Copenhagen and University of British Columbia (UBC) has revealed that oxygen appeared 700 million years earlier than we previously thought. The findings, published in the journal Nature, raises new questions about the evolution of early life. The research team examined the chemical composition of three-billion-year-old soils from South Africa, which are the oldest soils on Earth. They found...

2013-09-04 08:03:26

Big global questions face us, among them: How will we feed a growing global population without ruining the soil and polluting freshwater?  Or meet our burgeoning energy demands while curbing the greenhouse gas emissions that fuel rising sea levels, flooding, drought, disease and wildfire? And what can we do to stem the extinction of thousands of other species that share the planet with us? These daunting “environmental” problems are not only in the domain of ecologists and...

Corn Syrup Model Predicts Yellowstone Geophysical Behavior
2013-07-15 11:07:37

Brett Smith for redOrbit.com - Your Universe Online In an experiment that could be described as a science fair exhibit on steroids, researchers from Australia and the United States have created a model explaining the geophysical processes occurring in the Pacific Northwest using corn syrup, fiberglass and a series of pistons. Before computer models were generated using state-of-the-art processing power, scientists relied on simple models made from everyday materials. According to the...

2013-06-28 23:17:49

An article in the June issue of the journal Rangelands details a conservation partnership across 11 western states that is bringing a more unified approach to reducing threats to the sagebrush ecosystem and the wildlife that inhabits it. It is a proactive tactic to reduce the fuel that can feed wildfires and also lay a course for recovery of desired plant and wildlife in the wake of a fire. Lawrence, KS (PRWEB) June 28, 2013 A conservation partnership across 11 western states is bringing...

Unique Dinosaur Roamed The Desert Of Supercontinent Pangea
2013-06-25 09:03:28

April Flowers for redOrbit.com - Your Universe Online Pangaea, a single supercontinent existing from 300-200 million years ago, dominated the Earth during the Permian era with animal and plant life dispersed broadly across the land. This disbursement is documented by identical fossil species found on multiple modern continents. A new study, from the Society of Vertebrate Paleontology, supports the idea that Pangaea had an isolated desert at the center of the supercontinent with unique...


Latest Geological history of Earth Reference Libraries

Rainforests
2013-04-19 19:33:20

Rainforests are forests that are characterized by high levels of rainfall, with definitions based on a minimum usual annual rainfall of about 68 to 78 inches. The monsoon trough, or otherwise known as the intertropical convergence zone, holds an important role in producing the climatic conditions that are essential for the Earth’s tropical rainforests. About 40 to 75 percent of all biotic species are native to the rainforests. It’s been estimated that there might be many millions of...

Desertification
2013-04-02 09:46:56

Desertification is a form of land degradation in which a comparatively dry land area becomes more and more arid, normally losing its bodies of water along with its wildlife and vegetation. This is a result of a variety of factors, such as climate change and human activities. Desertification is an important global, ecological, and environmental issue. There is substantial controversy over the proper definition of the term “desertification”. The most broadly accepted of these is that of...

Geologic Clock With Events And Periods
2012-11-18 19:08:04

The Paleoproterozoic is the first of three subdivisions of the Proterozoic Eon (occurring from 2.5 billion to 1.6 billion years ago (Ga). This period is marked by the first stabilization of the continents, and also when cyanobacteria--a type of bacteria that uses biochemical processes of photosynthesis to produce oxygen--evolved. Experts have found paleontological evidence that during at least part of the Paleoproterozoic era, about 1.8 Ga, the earth year was about 450 days long, with days...

Geologic Clock With Events And Periods
2012-10-22 14:17:38

The Archean (formerly Archaeozoic) is a geologic eon between the Hadean and Proterozoic eons. The Archean Eon begins at roughly 3.8 billion years ago (Ga) and ends at about 2.5 Ga. But unlike all other geological ages, which are based on stratigraphy, The Archean eon is defined chronometrically. The lower boundary of 3.8 Ga has also not been officially recognized by the International Commission on Stratigraphy. The name Archean is derived from the ancient Greek (Arkhe), meaning...

Volcano_q
2012-06-26 19:51:17

The Hadean is the unofficial geological period of time that lies just before the Archean time period. The Hadean began with the formation of the Earth roughly 4.5 billion years ago (Ga) and ended about 3.8 Ga; the latter date varies according to different sources. Hadean is derived from Hades, Greek for “underworld,” referring to the hellish conditions on the planet at the time. The term was coined in 1972 by geologist Preston Cloud. The period was later classified as the “Priscoan...

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Word of the Day
cruet
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.
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