Sentences with phrase «light calcium carbonate»
From there, they could calculate the share of heavy to light calcium carbonate molecules in each sample.
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David Hodell, Jason Curtis and Mark Brenner from the University of Florida obtained their evidence from the ratio of calcium carbonate to calcium sulphate in sediments from Lake Chichancanab, in Yucátan, Mexico, and from the proportion of heavy to light isotopes of oxygen in buried shells.
The ATM Cave is home to the famous «Crystal Maiden» the intact skeleton of a young female that, due to a covering of calcium carbonate, sparkles eerily in the lamp light.
The relative proportions of light (12C) and heavy (13C) stable isotopes of carbon (δ13C) in calcium carbonate - based shells can indicate carbon sources.
Coral reefs are threatened by rising water temperatures, ocean acidification, and sea - level rise.3, 5 Coral reefs typically live within a specific range of temperature, light, and concentration of carbonate in seawater.6 When increases in ocean temperature or ultraviolet light stress the corals, they lose their colorful algae, leaving only transparent coral tissue covering their white calcium - carbonate skeletons.6 This phenomenon is called coral bleaching.
The calcite in calcium carbonate allows coccoliths to scatter more light than they absorb.