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When a river flows into a lake or ocean, the sediments that the river carries settle to the bottom. Layers of sediment may covor the dead organism.
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Which forms first a fossil mold or a fossil cast?
First, a thin layer of sediment hardens and forms a mold. Then, what is known as a cast is when a new layer of sediment fills in the mold breaking down the creature/ animal/fossil.
What is a mold and cast fossil?
A mold and cast fossil is and exact stone replica of an organism but it is formed like this. The first layer of sediment hardens and forms a mold. then a new layer of sediment fills in the mold and hardens. That is the cast.
Which type of fossil forms when an organisms hard parts dissolve and leave a cavity that laters fills with sediment?
Cast
Which type of fossil forms when an organisms hard parts dissolve and leave a cavity that later fills with sedim?
A mold fossil forms when an organism's hard parts dissolve and leave a cavity that later fills with sediment, creating a replica of the organism's shape.
What types of evidence of ancient life can preserved as fossils?
Fossils can be made of any material that deteriorates slower than the sediment that forms the fossil hardens
What kind of fossil is a leaf inprint?
It is formed slat rock and covered up with layers and layers of rock and sediment.
What can a fossil be preserved in?
Sediment and tree sap
One kind of fossil forms from the body parts of organisms. What is another kind of fossil?
Another kind of fossil is a mold or cast fossil, which forms when an organism's remains decay and leave an impression in the surrounding sediment that is later filled with minerals. Another type is a trace fossil, which is evidence of an organism's activity, like footprints or burrows, preserved in rock.
What makes a fossil form?
It gets buried in sediment
Hollow area in sediment in the shape of an organism?
Fossil
Hollow areas in the sediment in the shape of an organism?
Fossil
Is a fossil formed when an organism buried in sediment dissolves called?
No, a fossil formed when an organism buried in sediment dissolves is called a mold fossil. It is created when the organic material of the organism dissolves, leaving behind an impression or cavity in the sediment that hardens into rock.
