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Latest Geological history of Earth Stories

2014-10-22 23:04:40

A special issue of Rangelands explores California's diverse plant and wildlife species. Meanwhile these articles address changes in agricultural production, land usage, and shifts by people from urban to rural areas all in an attempt to answer the question: "What does this mean for range management?" (PRWEB) October 22, 2014 Rangelands—California’s rangelands feature an enormous diversity of plant and wildlife species. Identifying this diversity and how it influences the...

2014-10-17 23:03:18

Search Enables Scientific Best Practices to be More Easily Shared Frankfurt am Main (PRWEB) October 17, 2014 Search Technologies, the leading IT services firm specializing in the design and implementation of enterprise search and search-enabled big data applications, announced today that it has been working with the Bonn-based United Nations Convention to Combat Desertification since January 2014, to build a new public portal. There are many sustainable land management practices...

2014-10-09 23:04:46

The authors of an article featured in Rangeland Ecology and Management discuss the long-term effects of prescribed burns, mowing, and herbicides on the environment within the mountain regions of the western United States. While these are important tools for managing healthy rangelands, they may be impeding the ecosystem's ability to recover from environmental stresses. Lawrence, KS (PRWEB) October 09, 2014 Rangeland Ecology & Management – The best intentions may not always be...

hadean earth
2014-09-16 06:31:23

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 study, published in Earth and Planetary Science Letters, reveals that this assumption may be false and that the early Earth may have been surprisingly similar to present day. This new view of the planet's first geologic eon is gaining substantial...

volcano mantle plume theory wrong
2014-09-10 11:26:57

Marcus Woo, California Institute of Technology In the typical textbook picture, volcanoes, such as those that are forming the Hawaiian islands, erupt when magma gushes out as narrow jets from deep inside Earth. But that picture is wrong, according to a new study from researchers at Caltech and the University of Miami in Florida. New seismology data are now confirming that such narrow jets don't actually exist, says Don Anderson, the Eleanor and John R. McMillian Professor of Geophysics,...

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...


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
conjunto
  • A style of popular dance music originating along the border between Texas and Mexico, characterized by the use of accordion, drums, and 12-string bass guitar and traditionally based on polka, waltz, and bolero rhythms.
The word 'conjunto' comes through Spanish, from Latin coniūnctus, past participle of coniungere, to join together; see conjoin