(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 anthropogenic CO2 ...
The chemical secrets of a concrete Roman breakwater that has spent the last 2,000 years submerged in the Mediterranean Sea have been uncovered by an international team of researchers led by Paulo Monteiro of the U.S. Department ...
Materials Science
Jun 4, 2013
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An Indonesian cave painting that depicts a prehistoric hunting scene could be the world's oldest figurative artwork dating back nearly 44,000 years, a discovery that points to an advanced artistic culture, according to new ...
Archaeology
Dec 12, 2019
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A newly discovered trove of 16 engraved and otherwise modified limestone blocks, created 38,000 years ago, confirms the ancient origins of the pointillist techniques later adopted by 19th and 20th century artists such as ...
Archaeology
Feb 24, 2017
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A team of Egyptian and French archaeologists have found five heads of royal statues from the pharaonic era, officials from the antiquities ministry said on Saturday.
Archaeology
Nov 17, 2013
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Fauna & Flora International (FFI) has made a habit of bucking the trend by working to safeguard neglected landscapes that are not necessarily a priority for other conservation organizations. Arguably one of the least familiar ...
Plants & Animals
Jan 22, 2021
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364
Did an ancient island facilitate migration among the Ryukyu Islands? Compiling the latest geological and biological data, a research group from Tohoku University has provided compelling evidence that this was the case.
Earth Sciences
Jul 24, 2023
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New findings at Egypt's Khufu pyramid are raising hopes of unravelling the mysteries of one of the ancient world's most iconic monuments, including whether it may contain secret chambers.
Archaeology
Nov 10, 2015
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A perfectly preserved turtle fossil from Lower Bavaria yields important clues about both the species and the habitat that existed in southern Germany 150 million years ago. The fossil is the best-preserved specimen of Solnhofia ...
Paleontology & Fossils
Jul 26, 2023
0
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In a new study researchers from Sweden and Italy show what happens when magma meets limestone on its way up to the surface. Magma-limestone interaction might help explain why volcanoes like Vesuvius in Italy and Merapi in ...
Earth Sciences
Aug 8, 2016
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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.
This text uses material from Wikipedia, licensed under CC BY-SA
