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Chalk formed from sediments made of skeletions of microscopic living things in the ocean must be a(n) organic rock.

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14y ago

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What is a type of sedimentary rock formed from skeletons of microscopic living things once in the ocean?

Organic Sedimentary rock would probably be the best answer!


When sediments of living things are pressed together you are left with what?

When sediments of living things are pressed together, they can form fossils. Over time, the pressure and minerals in the sediments can turn the organic material into rock, preserving the remains of the living organisms as fossils.


What is limestone and chert?

Limestone is a boigenic rock. It is formed as a byproduct of living things, frequently it is made from the calcareous skeletons of living creatures. If we take the Chalk as a limestone, this was made in a warm shallow sea from the shells of microscopic plankton as they died and sank to the sea floor. However along with the calcareous shells, there were also shells of diatomic plankton which are made out of silicon dioxide (quartz). After deposition as the chalk was compacted by the overlying sediments that were laid down on top of it and it became buried, the water it contained became heated and the skeletons of the silicious diatoms dissolved in the water and then were redeposited as layers of "Chert" or "Flint" in the Chalk.


What is formed from coral shells and skeletons piled up on the ocean floor?

Yes, coral reefs are made of the limestone skeletons of deceased corals - the living corals are on the surface of the reef.


Are there any skeletons on the moon?

No, there are no skeletons on the moon. The moon is a lifeless environment, so there are no living creatures (or skeletons) on its surface.


How is petroleum formed?

scientists think that petroleum formed from the remains of plankton and other microscopic protists, plants, and animals living in shallow seas millions of years ago. The remains of these organisms settled on the ocean floor and were covered by sediments. Over millions of years, the pressure and heat produced by the sediments coverted the remains of these organisms into a syrupy liquid.


What is limestone's past?

It was the skeletons/shells of living animals and plants.


Which type of material does biogenous sediment form?

Two types of biogenous sediments are calcareous ooze and siliceous ooze.


What are the two kingdoms of microscopic living things?

The two kingdoms of microscopic living things are Bacteria and Archaea. These organisms are single-celled and lack a distinct nucleus.


How do chemical rocks form?

The key is the sediments. ... Biochemical sedimentary rocks are formed from organic processes that involve living organisms producing the sediments. These living organisms can be snails and clams whose discarded calcium carbonate shells can form limestone.


What is a good sentence for microscopic?

We used a microscope to study microscopic pond life.


What element is stored in the shells and skeletons of living organisms?

Calcium are the main composite of shells and bones.