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Limestone is a sedimentary rock composed largely of the mineral calcite (calcium carbonate: CaCO3). The deposition of limestone strata is often a by-product and indicator of biological activity in the geologic record. Calcium (along with nitrogen, phosphorus, and potassium) is a key mineral to plant nutrition: soils overlying limestone bedrock tend to be pre-fertilized with calcium. Limestone is an important stone for masonry and architecture, vying with only granite and sandstone to be the most commonly used architectural stone. Limestone is a key ingredient of quicklime, mortar, cement, and concrete. The solubility of limestone in water and weak acid solutions leads to important phenomena. Regions overlying limestone bedrock tend to have fewer visible groundwater sources (ponds and streams), as surface water easily drains downward through cracks in the limestone. While draining, water slowly (over thousands or millions of years) enlarges these cracks; dissolving the calcium-carbonate and carrying it away in solution. Most well-known natural cave systems are through limestone bedrock. From Wikipedia under the
GNU Free Documentation License  strata.geol.sc.edu 600px x 800px | 275.10kB [source page] 186 Storm waves are interpreted to have eroded this shelf surface and caused the shallow water limestones of the Lower Mississippian Newman Limestone Formation to have their  paddleasia.com 529px x 800px | 147.00kB [source page] Wild scenery in Khao Sok National Park There are countless opportunities to paddle next to soaring limestone From Yahoo Image Search: "Limestone"  galesburg.com BEN DIGGLE Sat, 13 Jun 2009 04:24:00 GM The Register-Mail, your source for the latest breaking local news, sports, weather, business, jobs, real estate, shopping, health, travel, and entertainment in Galesburg, IL.  paloma81.blogspot.com Paloma {La Dolce Vita} ue, 16 Jun 2009 14:39:00 GM I have loved Adventures in Renovating a Brooklyn . Limestone. since I came across it for the first time. Not only is Stefanie, the blog's author completely engaging, but she has excellent photography skills and lives in a gorgeous ...  limestone.edu Josh Crotzer hu, 28 May 2009 17:45:17 GM WHAT: . Limestone. College Fine Arts Camp for 4th, 5th, and 6th Graders WHEN: June 15-19. WHERE: . Limestone. College COST: $125 per camper ($25 family discount) CONTACT: Evan Goetz - 864-641-5779 or limestone. .edu ... From Google Blog Search: "Limestone"  wkyt.com WYMT, KY City officials say it's time to make South Limestone a place where everyone can feel safe traveling using various modes of transportation. Currently the city has 10 different possible construction designs. Tuesday night members of the community were ...  enewscourier.com News Courier, AL An Ardmore schoolteacher first detected what she believed was abuse when the girl kept fidgeting in her seat at school and asked the girl if something was wrong, Limestone County Sheriff's Chief Investigator Stanley McNatt said after their initial ...  cullmantimes.com Cullman Times Online, AL His talents have earned him a place in the Limestone County Sports Hall of Fame with its 2009 class of inductees. Kelley started his athletic career at Athens High. He earned All-County and All-TVC (Tennessee Valley Conference) honors while playing for ... From Google News Search: "Limestone" What does the presence of limestone indicate about an area's ancient history? Q. What does the presence of limestone indicate about an area's ancient history? A. The land used to be an area of many volcanoes. B. Glaciers covered the land at one time. C. The land used to be much higher. D. Shallow seas once covered much of the land. Asked by dez - Wed Nov 12 09:21:15 2008 - - 3 Answers - 0 Comments A. Limestones indicate shallow warm seas at the time of deposition. Lime, CaCO3 is one of the odd substances that has its maximum solubility at low temperatures. As the water temperature goes up the solubility goes down and so the lime is precipitated- dropped out of solution. Shallow seas are more easily warmed by sun light and do not have much mixing from cold water at depth. (ANother note. Limestones also usually form a some distance from the coast. Near the coast the denser sediments drop out, the soluble lime is carried farther away from shore. This tends to show the original was shallow to a considerable distance from shore.) Answered by dougger - Wed Nov 12 09:34:39 2008 what is the best way to re-apply a limestone tile sealer? Q. A friend used some old sealer on my new floor and it was full of streaks and dirty marks, etc. Now I have used the product "STAR" an acid based product to remove the existing sealer...but it didn't completly come off...but pretty good. The tile is limestone and has a matte appearance. What product should I use and how do I apply it? Help! Asked by bassie - Sat Feb 2 11:39:28 2008 - - 1 Answers - 0 Comments A. pumpup sprayer Answered by campmano - Mon Feb 4 04:43:10 2008 Where can I find a quarry that sells black limestone?
Q. We are looking for 8'x4'x4' blocks of limestone, not the crushed kind. Asked by Erin B - Fri Jul 20 11:14:42 2007 - - 2 Answers - 0 Comments A. Most black limestone is quarried in India. Answered by rlbendele1 - Fri Jul 20 11:29:58 2007 From Yahoo Answer Search: "Limestone" |
