Posts treating: "Earth"
Thursday, 24 July 2014
Calderas are some of the most spectacular features on Earth. They are large volcanic craters that form by two different methods: 1) an explosive volcanic eruption; or, 2) collapse of surface rock into an empty magma
smithsonianmag.com Most of the world’s volcanoes are located deep beneath the sea surface along the mid-ocean ridges where the Earth’s crust spread and creates new ocean floor. Volcanoes on land often occur in subduction zones, where one tectonic plate is diving beneath another, or hotspots created by mantle plumes deep within the planet. READ
...the earth is flat. [sorry, just watched the evening news, couldn't help
This year’s Earth Science Week will be held from October 12-18 and will celebrate the theme “Earth’s Connected Systems.” Included in the June, 2014 Earth Science Week Newsletter are…. * Earth Science Week 2014 Toolkit: Pre-Order Today! * Earth Science Week Contests Detailed in New Webcast * AIPG Aims to Educate Next-Generation Geologists * Online
The 184 diamonds in the Seahawks Super Bowl Championship rings can tell us a thing or three about Earth’s inner self. We’re still interrogating those valuable, shiny rocks (which...
-- Read more on ScientificAmerican.com
In November 2013, a full moon and high tides led to flooding in parts of the city, including here at Alton Road and 10th Street. Photograph: CorbisFor those of us in the earth sciences it is kind of mind-boggling to believe that some people still think that climate change is a hoax foisted on us only by liberals or communists. There is a billion-year record of climate change that exists in the rock record and it clearly shows that Earth's climate is subject to change. And there is a [...]
Earth’s Changing Magnetism European Space Agency Oil Imports at 45-Year Low The Globe and Mail Dry Ice Gullies on Mars NASA Test Drilling North Carolina’s Davie Shale ? Winston-Salem Journal Historic Arizona Mine Data Online for Free Viewing Arizona Geological Survey Should Oil and Gas be Regulated from the Ballot Box ? ? The Hill
The Moon has an elliptical orbit, which means that it is sometimes closer and sometimes farther away from the earth. Today the moon is full and making one of its closer approaches (perigee Moon), at 222,611 miles. At other times it can be as far away as 250,000 miles (an apogee moon), which makes for a difference of about 14% in its apparent size as seen from Earth. It's also about
The most important lessons drawn from geology are that the earth’s climate can change radically and that the pace of change can be rapid. The precision of measurement is currently too poor to give an exact answer to a critical question, At what carbon dioxide level are we in danger of melting Antarctica? However, while crude, these estimates suggest that this threshold will be reached in 150-300 years, if carbon dioxide levels continue to rise at the current
Previously I had posted on "What is the most common mineral on Earth?", well some recent discoveries have come to light that have made me go back to that original post and update it. When I had originally published the post I had stated that:"Looking at the bulk composition of the Earth the most common mineral is generally regarded as olivine since the mantle makes up the bulk of the Earth and olivine makes up the bulk of the mantle." That statement had produced a couple of comments (not [...]
The new ELI today is 'Fieldwork: Applying 'the present is the key to the past'.
This five-phase outdoor activity is used to explain how Earth scientists use the Principle of Uniformitarianism, often simply stated as ‘the present is the key to the past’, by considering the present environment and thinking how it might be preserved geologically.
It is one of many outdoor ELIs - all listed on
Surrounded by thousands of square miles of ubiquitous desert, the “Eye of the Sahara” peers out from the Earth’s surface and at nearly 50 km wide, its easily visible from space too. The “Eye of the Sahara” is known as a Richat Structure, a geological feature consisting of a series of alternating circular layers of
GeoLog-The official blog of the European Geosciences Union [2014-07-03 13:00:56]
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The last two weeks have been action-packed, with ten schools from seven countries heading online to ask five fabulous geoscientists questions about anything from how the Earth works to what it’s like to be a scientist in the first ever I’m a Geoscientist, Get me out of here! competition. The aim of this thrilling fortnight
“Hence the saying: If you know the enemy and know yourself, your victory will not stand in doubt; if you know Heaven and know Earth, you may make your victory complete.” The Art of War, by Sun Tzù In 1863, after more than two years of Civil War, the Confederate Army of Northern Virginia launches
Geology in the West Country [2014-06-29 15:41:00]
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(19 visits) Jurassic; GB,US
Thursday July 3rdJurassic mud volcanoes and methaneDr. Gregory D. Price, School of Geography, Earth and Environmental Sciences, Plymouth UniversityBRLSI, 16 Queen Square, 7.30 p.m.Everyone welcome - visitors £4 - free refreshments Further details on website of Bath Geological
NASA’s Mars Curiosity Rover completed its first Martian Year (687 Earth days) on June 24. An article on NASA.gov lists some of the rover’s first year
If you think the answer is “quartz” or another that you identified in Physical Geology class you are wrong. It’s Bridgmanite, a mineral that makes up much of the lower
Joints occur pretty much everywhere in rocks exposed at the surface of the Earth. And they can be pretty important, both during construction activities, intrusion of magma and flow of fluids (groundwater, hydrocarbons, CO2, magma). Joints represent conduits of fluids, … Continue reading
A tornado is a violently rotating column of air that is in contact with both the surface of the Earth and a large rain cloud. Most tornadoes have wind speeds less than 110 miles per hour, are about 76 m across, … Continue reading
In 1993, oceanographer William Sager began studying the massive underwater mountain mass about 1,000 miles off the coast of Japan in a mountain range known as the Shatsky Rise. At that time, Sager was with the Texas A&M College of Geosciences. He … Continue reading