News tagged with aragonite
Stalagmites in Northeast Brazilian Caves Confirm 9,000-Year Model of Diminishing Rainfall
Space & Earth / Earth Sciences
Feb 25, 2009 |
4.8 / 5 (4) |
0
(PhysOrg.com) -- Until recently, researchers studying climate history in Brazil’s dry Nordeste region expected it to have wet and dry periods similar to the rest of South America. But over the past 9,000 years, ...
Search results for aragonite
Modest CO2 cutbacks may be too little, too late for coral reefs
Sep 22, 2008 |
2.7 / 5 (25) |
28
How much carbon dioxide is too much? According to United Nations Framework Convention on Climate Change (UNFCCC) greenhouse gases in the atmosphere need to be stabilized at levels low enough to "prevent dangerous anthropogenic ...
Mother of Pearl Secret Revealed
Nov 27, 2008 |
4.4 / 5 (28) |
0
(PhysOrg.com) -- In addition to its iridescent beauty, mother of pearl, or nacre, the inner lining of the shells of abalone, mussels and certain other mollusks, is also renowned for an amazing strength and ...
Ocean acidification threatens cold-water coral ecosystems
Apr 03, 2006 |
4.2 / 5 (13) |
0
Corals don't only occur in warm, sun-drenched, tropical seas; some species are found at depths of three miles or more in cold, dark waters throughout the world's oceans. Some cold-water coral reefs are home to more than 1,300 ...
Snail fossils suggest semiarid eastern Canary Islands were wetter 50,000 years ago
Space & Earth / Earth Sciences
Oct 27, 2009 |
2.5 / 5 (2) |
0
Fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands show that the Spanish archipelago off the northwest coast of Africa has become progressively drier over the past 50,000 years.
Coral Reefs Unlikely to Survive in Acid Oceans
Dec 13, 2007 |
3.2 / 5 (22) |
6
Carbon emissions from human activities are not just heating up the globe, they are changing the ocean’s chemistry. This could soon be fatal to coral reefs, which are havens for marine biodiversity and underpin ...
Crystal structure prediction made possible
Physics /
Dec 22, 2005 |
4.2 / 5 (10) |
1
In the past it has been impossible to predict crystal structures with reasonable computing efforts. Even for crystals with relatively few atoms per unit cell the number of possible structures is astronomically ...
Mother-of-Pearl in Highest Resolution
Physics /
Oct 05, 2005 |
3.6 / 5 (8) |
0
Mother-of-pearl, also known as nacre, is not just an iridescent substance whose optical characteristics impress the observer and which is often used for jewellery. It is also an excellent material for working ...
Study: Corals can switch skeletal material
Biology /
Jul 06, 2006 |
3.2 / 5 (5) |
0
U.S. marine geologists say they've determined corals can change their skeletons, using different minerals depending on the seawater's chemical composition.
Extinction by asteroid a rarity: 'Sick Earth' extinctions more likely
Space & Earth / Earth Sciences
Oct 07, 2008 |
3.7 / 5 (18) |
7
In geology as in cancer research, the silver bullet theory always gets the headlines and nearly always turns out to be wrong.
Mother-of-pearl -- Classic beauty and remarkable strength
Jul 02, 2007 |
4.7 / 5 (28) |
0
While the shiny material of pearls and abalone shells has long been prized for its iridescence and aesthetic value in jewelry and decorations, scientists admire mother-of-pearl for other physical properties ...
List of search results for aragonite
