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Rewriting The Geologic History Of Hadean Earth

Rewriting The Geologic History Of Hadean Earth

April Flowers for redOrbit.com - Your Universe Online The first 500 million years after the Earth formed is a period known as the Hadean. Until recently, it was believed that this time in Earth's history was hellacious, to put it mildly. A new...

Latest Geological history of Earth Stories

paleosol in boulders
2014-09-08 07:08:52

Thomas Deane, Trinity College Dublin Geologists from Trinity College Dublin have rewritten the evolutionary history books by finding that oxygen-producing life forms were present on Earth some 3 billion years ago – a full 60 million years earlier than previously thought. These life forms were responsible for adding oxygen (O2) to our atmosphere, which laid the foundations for more complex life to evolve and proliferate. Working with colleagues from the Presidency University in...

2014-09-04 23:09:31

Sharon Kleyne Hour Power of Water Host Notes Similarities between Drought and Human Dehydration, Believes Terminology Change would Help Generate a Quicker Solution. Grants Pass, OR (PRWEB) September 04, 2014 Because of the state’s worst-ever drought, a group called the California Water Foundation has proposed changing the picture on the California state flag from a bear standing on grass to a camel standing on sand (Mark Kota, “Drought is so bad, change California flag: group,”...

2014-08-27 12:24:29

DALLAS, Aug. 27, 2014 /PRNewswire/ -- RSP Permian, Inc. ("RSP" or the "Company") (NYSE: RSPP) today announced that Steven Gray, Chief Executive Officer, will present at the Barclays CEO Energy-Power Conference in New York, New York on Thursday, September 4, 2014. The company plans to release an updated investor presentation prior to the conference. The presentation will be available on RSP Permian's website at www.rsppermian.com in the Investor Relations - Investor Presentations...

changing rangelands
2014-08-21 03:15:30

Sandy Leander, ASU School of Life Sciences Half of the Earth’s land mass is made up of rangelands, which include grasslands and savannas, yet they are being transformed at an alarming rate. Woody plants, such as trees and shrubs, are moving in and taking over, leading to a loss of critical habitat and causing a drastic change in the ability of ecosystems to produce food – specifically meat. Researchers with Arizona State University’s School of Life Sciences led an investigation...

artistic conception of the early Earth
2014-08-01 04:33:08

redOrbit Staff & Wire Reports - Your Universe Online Over four billion years ago, giant asteroid impacts collided with the Earth’s surface and gave the planet a facelift of sorts – mixing, burying and melting the landscape, according to a new terrestrial bombardment model devised by an international team of researchers from various academic and government institutions. The new model was based on existing lunar and terrestrial data, and according to the authors of a new paper...

More People Means More Plant Growth
2014-07-02 03:36:12

Kathryn Hansen, NASA Ecologist Thomas Mueller uses satellite data to study how the patterns of plant growth relate to the movement of caribou and gazelle. The research sparked an idea: Would the footprint of human activity show up in the data? Mueller, of the University of Maryland in College Park (now at the Biodiversity and Climate Research Center in Frankfurt) teamed up with university and NASA colleagues to find out. Their new analysis shows that on a global scale, the presence of...

2014-06-16 23:00:32

An article featured in Rangelands discusses the practice of patch-burning and compares this technique to that of more traditional methods. However, after conducting a 3-year study, the authors concluded that there was no statistical difference in the cattles' body condition score (BCS) when measuring the patch-burning method against the traditional grazing methods. Lawrence, Kansas (PRWEB) June 16, 2014 To keep order on rangelands, range managers must carefully monitor the grazing...

2014-05-21 08:31:34

STEENBERGEN, The Netherlands, May 21, 2014 /PRNewswire/ -- A new Groasis invention, a biodegradable version of the proven successful Waterboxx, is the answer against desertification. The Groasis Greenboxx, made of recycled paper, is an environmentally friendly development of the Waterboxx. The Groasis Greenboxx can be used to plant one tree in a desert without using irrigation. It saves up to 97% of water while planting. After a year the Groasis Greenboxx degrades and...

2014-05-20 23:05:24

Allen Press, Inc. co-publishing client the Society for Range Management won the Gold EXCEL Award for a Journal Featured Article from Association Media & Publishing. The winning article, published in Rangelands, centers on initiatives and innovations driven by agro-pastoral women in Kenya being shared with and inspiring communities of women in Ethiopia. Lawrence, Kansas (PRWEB) May 20, 2014 Allen Press, Inc., is pleased to announce that co-publishing client the Society for Range...

2014-05-19 23:04:40

An editorial published in Rangeland Ecology & Management marks the journal's 10th year of publication. With an increased focus on complex topics such as climate change, natural resource policy and more, the journal has seen strong growth in Impact Factor, number of published articles, and online views and downloads. Lawrence, Kansas (PRWEB) May 19, 2014 Rangeland Ecology & Management– The Society for Range Management (SRM) celebrates 10 years of publication of the journal...


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
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'