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Does a sedimentary rock contains shells and skeletons of marine animals such as coral?
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Biogenous sediments are shells and skeletons of marine animals and algae what are two examples of this?
radiolaria; foraminifera radiolaria(single-celled animals) forminifera(marine plankton species)
What are shells of marine organisms composed of?
The bulk of marine skeletal remains are composed of the mineral calcite. Some marine organisms also have shells of aragonite or silica.
What is lithified of tiny marine organisms with skeletons composed of silica?
Chalk
What is chert chemically primarily composed of?
Chert is a sedimentary rock composed of pure silica, occurring either in interlayered beds with other sedimentary rocks or as odd-shaped or rounded lumps called nodules found in other sedimentary rocks. The bedded form is often composed of the skeletal remains of tiny marine organisms, and these skeletons can be seen with the aid of a microscope. The nodular chert is formed from the precipitation of quartz from silica-rich ground water, and appears with frequency in limestone.
Is limestone made from clastic organis or chemical?
A purely chemical sedimentary limestone would contain no fossil remnants, organic limestone would.
Do skeletons exist on the ocean floor?
The ocean floor sediment contains unfathomable numbers of marine organism skeletons.
Which type of material does biogenous sediment form?
Two types of biogenous sediments are calcareous ooze and siliceous ooze.
What are the two sources of calcium carbonate found in limestone?
Precipitation from solution, and skeletons of marine animals.
Biogenous sediments are shells and skeletons of marine animals and algae what are two examples of this?
radiolaria; foraminifera radiolaria(single-celled animals) forminifera(marine plankton species)
What 3 kinds of sedimentary rocks make up coquina?
Coquina is a sedimentary rock made up of shells, shell fragments, and skeletons of small marine creatures.
What are shells of marine organisms composed of?
The bulk of marine skeletal remains are composed of the mineral calcite. Some marine organisms also have shells of aragonite or silica.
In what type of rock would geologist most likely find evidence of past life forms?
Sedimentary rock and limestone in particular, because it is normally formed from the skeletons of mostly minute dead marine organisms.
In what type of rocks would geologist most likely find evidence of past life forms?
Sedimentary rock and limestone in particular, because it is normally formed from the skeletons of mostly minute dead marine organisms.
Compare and contrast the lifestyles of lampreys and sharks?
Lampreys are jawless fishes with cartilaginous skeletons. Most lampreys are parasites on other fishes and are marine animals. A few lamprey species live in freshwater. All sharks live in the sea and have cartilaginous skeletons. Most sharks are predators, but a few are filter feeders on marine plankton.
Do all rocks form fossils?
No, fossils are actually very difficult to find. The majority of fossils found are marine invertebrates. They are usually found in sedimentary rock. However, there is plenty of sedimentary rock that contains no fossils at all.
What type of rock are marine fossils found in?
sedimentary
What is lithified of tiny marine organisms with skeletons composed of silica?
Chalk
