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What is dolomite made out of?
Dolomite is a type of limestone containing magnesium carbonate as well as the calcium carbonate of ordinary limestone. As with ordinary limestone, dolomite is a deposit of microscopic skeletons of dead plankton. When the plankton die their skeletons settle to the bottom of the ocean, forming a ooze that eventually solidifies. When mountain building activities raise this on the land we get limestone or dolomite.
How did carbon in the atmosphere get into the shells of mussels?
Mussels absorb carbon into their shells from the ocean water. The carbon is in the form of calcium carbonate, which mussels extract from the water to build their shells. When carbon dioxide in the atmosphere dissolves in the ocean, it forms carbonic acid, which can break down to release carbonate ions that mussels use to create their shells.
How limestone can form when water evaporates and leaves behind the minerals that form it.limestone is a?
When water containing dissolved calcium carbonate evaporates, the minerals are left behind and accumulate over time. These minerals then crystallize and form limestone, which is a sedimentary rock composed primarily of calcium carbonate. This process typically occurs in areas where there is a high concentration of calcium carbonate in the water, such as ocean floors or shallow marine environments.
Why do polyps extract calcium from seawater?
Polyps extract calcium from seawater to build their calcium carbonate skeletons, which provide structural support and protection. This process is essential for the growth and maintenance of coral reefs, which are vital ecosystems in marine environments. The calcium carbonate structure also helps in the overall carbon cycling within the ocean. Additionally, extracting calcium contributes to the polyps' ability to thrive in various marine environments by enhancing their resilience against environmental changes.
Why does carbonic acid cause the pH of the ocean to decrease?
Carbonic acid forms when carbon dioxide dissolves in water. This acidification of the ocean decreases pH levels because carbonic acid releases hydrogen ions, increasing the acidity of the water. This can have negative impacts on marine life that rely on dissolved calcium carbonate to build their shells and skeletons.
The acidic ocean water wil erode the calcium carbonate shells true or false?
Yes, it is true that the acidic ocean water will erode the calcium carbonate shells.
What are most seashells made of?
Seashells are primarily made of calcium carbonate, a mineral compound that is formed by marine organisms from the ocean water. This compound forms the structural material of the shell, providing strength and protection to the creature inside.
Mollusks have a durable shell made of calcium carbonate and are found where?
The ocean
What is the carbonate compensation depth?
The carbonate compensation depth (CCD) is the depth in the ocean at which the rate of calcium carbonate production equals the rate of dissolution. Below this depth, calcium carbonate dissolves due to increased pressure and decreasing pH, preventing accumulation. The CCD varies with ocean chemistry, temperature, and biological activity.
Is chalk is composed of calcium carbonate?
Chalk is simply another form of Calcium Carbonate(CaCO3)
The calcium carbonate found in limestone was originally extracted from?
The calcium carbonate found in limestone was originally extracted from the shells and skeletons of marine organisms such as corals, mollusks, and foraminifera that accumulated on the ocean floor over millions of years. These organisms extract calcium and carbonate ions from surrounding water to build their calcium carbonate structures, which eventually become part of limestone deposits through geological processes.
What is the calcium carbonate cycle?
Plants and animals that secret lime (CaCO3) flourish in tropical seas. Shells Of CaCO3 in many pile up in shallow off shore waters where they cemented themselves into limestone. Slightly acid grown water is a solvent of limestone, and creates tunnels, caves, and even caverns along cracks or joints in the rock. Some of the dissolved calcium carbonate is redeposit in caves and caverns stalactites and stalagmites.
What is dolomite made out of?
Dolomite is a type of limestone containing magnesium carbonate as well as the calcium carbonate of ordinary limestone. As with ordinary limestone, dolomite is a deposit of microscopic skeletons of dead plankton. When the plankton die their skeletons settle to the bottom of the ocean, forming a ooze that eventually solidifies. When mountain building activities raise this on the land we get limestone or dolomite.
What does coral reefs absorb from the ocean to form their skeletons?
They absorb calcium ions and bicarbonate (hydrogen carbonate) ions.
How have foraminifera and radiolarions contributed to the formation of sedimentary layers on the ocean floor?
When they die they leave behind their calcium carbonate shell.
How did carbon in the atmosphere get into the shells of mussels?
Mussels absorb carbon into their shells from the ocean water. The carbon is in the form of calcium carbonate, which mussels extract from the water to build their shells. When carbon dioxide in the atmosphere dissolves in the ocean, it forms carbonic acid, which can break down to release carbonate ions that mussels use to create their shells.
What three steps are required for calcareous ooze to exist below the CCD?
Deposition: Calcareous organisms such as foraminifera and coccolithophores produce calcium carbonate shells that sink to the ocean floor when they die. Dissolution: Below the Calcite Compensation Depth (CCD), the pressure and acidity of the water increase, causing calcium carbonate to dissolve. Preservation: Calcareous ooze forms when the rate of deposition of calcium carbonate shells exceeds the rate of dissolution below the CCD, allowing the accumulation of sediment to form on the ocean floor.
