News tagged with aragonite
How soft corals defy their environment
Many marine organisms, including corals, build skeletons from calcium carbonate -- in the form of calcite or aragonite. The current composition of seawater favors the formation of aragonite -- but soft corals have a specific ...
Aug 16, 2011 |
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Stalagmites in Northeast Brazilian Caves Confirm 9,000-Year Model of Diminishing Rainfall
(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, ...
Space & Earth / Earth Sciences
Feb 25, 2009 |
4.8 / 5 (4) |
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Search results for aragonite
Unprecedented, man-made trends in ocean's acidity
Recent carbon dioxide emissions have pushed the level of seawater acidity far above the range of the natural variability that existed for thousands of years, affecting the calcification rates of shell-forming ...
Jan 22, 2012 |
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'Nature's armor' could help engineers design stronger materials
(PhysOrg.com) -- In nature, the strength of mother-of-pearl is a key to survival for some shellfish. Now a team led by Xiaodong Li, an engineering professor at the University of South Carolina, has posited an explanation ...
Nanotechnology / Nanomaterials
Nov 14, 2011 |
4.8 / 5 (6) |
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Scientist creates new hypothesis on ocean acidification
A Researcher at the Hawai'i Institute of Marine Biology, an organized research unit in the University of Hawai'i at Manoa's School of Ocean and Earth Science and Technology has come up with a new explanation for the effects ...
Aug 30, 2011 |
3.5 / 5 (4) |
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Oyster shells are a scientific treasure trove
The breakdown of the seasonality pattern marked a period of dramatic climate change 16–12 million years ago. This is the finding of an analysis of fossil oyster shells from the area around Vienna. The ...
Other Sciences / Archaeology & Fossils
Apr 18, 2011 |
4.7 / 5 (3) |
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Eyes of rock let chitons see predators
Using eyes made of a calcium carbonate crystal, a simple mollusk may have evolved enough vision to spot potential predators, scientists say.
Apr 14, 2011 |
5 / 5 (2) |
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Skeletons in the pre-Cambrian closet
The Cambrian explosion marked a major blossoming in the tree of life around 540 million years ago. Nearly all of the major phyla in the animal kingdom appeared in a sudden burst of evolution. One of the drivers ...
Other Sciences / Archaeology & Fossils
Jan 07, 2011 |
4.9 / 5 (13) |
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Marine scientists unveil the mystery of life on undersea mountains
They challenge the mountain ranges of the Alps, the Andes and the Himalayas in size yet surprisingly little is known about seamounts, the vast mountains hidden under the world's oceans. Now in a special issue ...
Sep 20, 2010 |
4.8 / 5 (5) |
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Global warming slows coral growth in Red Sea
In a pioneering use of computed tomography (CT) scans, scientists at Woods Hole Oceanographic Institution (WHOI) have discovered that carbon dioxide (CO2)-induced global warming is in the process of killing ...
Jul 15, 2010 |
2.8 / 5 (9) |
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Oyster Shells Tell Story
(PhysOrg.com) -- Some oysters provide pearls but all oyster shells have a story to tell, if you know how to look for them. One compelling story about North America’s first successful English settlement has ...
Chemistry / Analytical Chemistry
Jun 04, 2010 |
4.8 / 5 (4) |
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Europe's scientists call for more effort in tackling rising ocean acidity
Ten years ago, ocean acidification was a phenomenon only known to small group of ocean scientists. It's now recognised as the hidden partner of climate change, prompting calls for an urgent, substantial reduction in carbon ...
May 19, 2010 |
5 / 5 (1) |
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List of search results for aragonite
