News tagged with limestone
Professor offers insight into Florida's recent sinkholes
A sinkhole, about 100-feet-wide and 50-feet-deep, opened up in the backyard of a home in a Windermere, Fla. May 3. Almost one week later, another sinkhole that was 80-feet-long and 40-feet-wide opened ...
Space & Earth / Earth Sciences
May 22, 2012 |
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37,000 years old: Earliest form of wall art discovered
Anthropologists working in southern France have determined that a 1.5 metric ton block of engraved limestone constitutes the earliest evidence of wall art. Their research, reported in the most recent edition of the Proceedings of ...
Other Sciences / Archaeology & Fossils
May 14, 2012 |
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Solar thermal process produces cement with no carbon dioxide emissions
(Phys.org) -- While the largest contributor to anthropogenic greenhouse gas emissions is the power industry, the second largest is the more often overlooked cement industry, which accounts for 5-6% of all ...
Apr 10, 2012 |
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Researcher finds key to ancient weather patterns in Florida's caves
(PhysOrg.com) -- Darrel Tremaine has been known to go to extremes for his research, such as crawling on his hands and knees through a dark, muddy limestone cave in Northwest Florida to learn more about the ...
Space & Earth / Earth Sciences
Dec 06, 2011 |
4 / 5 (2) |
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Findings show ancient birds died in flash flood
(PhysOrg.com) -- During a presentation at the Society of Vertebrate Paleontology's 71st annual Meeting in Las Vegas, researchers Gareth Dyke and Darren Naish from the University of Southampton presented their findings of ...
Other Sciences / Archaeology & Fossils
Nov 14, 2011 |
5 / 5 (3) |
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Discovering oil at micro level
(PhysOrg.com) -- Getting trapped oil out of porous layers of sandstone and limestone is a tricky and costly operation for energy exploration companies the world over. But now, University of Alberta researchers ...
Chemistry / Analytical Chemistry
Nov 03, 2011 |
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Sediba hominid skull hints at later brain evolution
An analysis of a skull from the most complete early hominid fossils ever found suggests that the large and complex human brain may have evolved more rapidly than previously realized, and at a later time than some other human ...
Other Sciences / Archaeology & Fossils
Sep 08, 2011 |
5 / 5 (4) |
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New technology gives on-site assessments in archaeology
The ability to tell the difference between crystals that formed naturally and those formed by human activity can be important to archaeologists in the field. This can be a crucial bit of information in determining ...
Nov 17, 2010 |
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Cave reveals Southwest's abrupt climate swings during Ice Age
Ice Age climate records from an Arizona stalagmite link the Southwest's winter precipitation to temperatures in the North Atlantic, according to new research.
Space & Earth / Earth Sciences
Jan 20, 2010 |
4.7 / 5 (14) |
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Limestone leaf warbler: New bird species discovered
(PhysOrg.com) -- A diminutive, colorful bird living in the rocky forests of Laos and Vietnam has been discovered by a team of scientists from the Wildlife Conservation Society, Lao PDR Department of Forestry, Swedish University ...
Dec 21, 2009 |
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Bedrock of a holy city: the historical importance of Jerusalem's geology
Jerusalem's geology has been crucial in molding it into one of the most religiously important cities on the planet, according to a new study.
Space & Earth / Earth Sciences
Oct 19, 2009 |
4 / 5 (5) |
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Lebanon cave takes on Amazon for spot in new seven wonders
Lebanon's Jeita Grotto on Tuesday was selected as one of 28 finalists for the seven natural wonders of the world, facing the Amazon, Mount Vesuvius and others for a spot on the prestigious list.
Jul 21, 2009 |
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'The world's oldest manufactured beads' are older than previously thought
(PhysOrg.com) -- A team of archaeologists has uncovered some of the world’s earliest shell ornaments in a limestone cave in Eastern Morocco. The researchers have found 47 examples of Nassarius marine shells, ...
Other Sciences / Archaeology & Fossils
May 05, 2009 |
4.7 / 5 (11) |
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Sea Urchins' Digging Teeth are Designed to Stay Sharp
(PhysOrg.com) -- Sea urchins dig themselves hiding holes in the limestone of the ocean floor using teeth that don’t go blunt. Weizmann Institute scientists have now revealed their secrets, which might give engineers insights ...
May 04, 2009 |
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Limestone
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera.
Limestone makes up about 10% of the total volume of all sedimentary rocks. The solubility of limestone in water and weak acid solutions leads to karst landscapes, in which water erodes the limestone over thousands to millions of years. Most cave systems are through limestone bedrock.
Limestone has numerous uses, including as a building material, as aggregate to form the base of roads, as white pigment or filler in products such as toothpaste or paints, and as a chemical feedstock.
For more information about Limestone, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
