0
What else can I help you with?
Why does volcanic rock not contain many fossils?
There is nothing living in/on molten lava. You can find fossils in volcanic tuff, but that is volcanic ash that falls on things then fuses into a solid but soft and lightweight rock.
How can the age of a rock be related to fossils?
If a lava flow or bed of volcanic ash was dated using isotopic dating methods and fossils were found in a sedimentary rock beneath the volcanic rock, it can be surmised that the fossils were older than the lava or ash. If the same species of fossils were found in another part of the world it would make sense that the rocks there were the same age as previous fossils. By cross checking with many other areas with other volcanic rocks, it can be found that all the rocks around the world containing those fossils were of a similar age.
Would you find a fossil in a pumice rock?
No, fossils are typically found in sedimentary rocks, not in pumice rocks. Pumice is an igneous rock that forms from volcanic activity and is too porous and even too young to preserve fossils.
Fossils that appear all over the world in certain rock layers are what?
Fossils that appear all over the world in particular rock layers are called index fossils. These fossils are used by scientists to correlate and date rock layers in different locations, providing insights into the Earth's geological history and past environments.
Would it be likely to find fossils of the older reptile species in rock layers younger than the volcanic ash?
not really, i don't think so.
Why do rock fossils form in sedimentary rock and not in igneous rock-?
Fossils are formed in sedimentary rock because the rock is formed at temperatures that do not destroy the fossils like the igneous rocks would.
Why would you find a volcanic rock on a volcanic island?
Volcanic islands are formed by volcanoes and are therefore composed of volcanic rock.
What rock group would a volcanic rock be associated with?
Volcanic rocks are considered igneous.
A limestone that contains fossils would be classified as what type of sedimentary rock?
A limestone that contains fossils would be classified as an organic sedimentary rock because the fossils are of biological origin.
Why do rock fossils form in sedimantry rock and not in igneous rock?
Fossils usually form when the remains of an organism are buried gently under sediments which later turn into stone. Intrusive igneous rocks form at depths within Earth where no life is found. Extrusive igneous (volcanic) rocks are so hot when they are deposited that any remains of organisms are usually incinerated. Fossils do occur in volcanic rocks, but very rarely.
Can scoria hold fossils?
Schists are formed when a sedimentary rock is deformed by great heat and pressure, deep within the Earth's crust. This deformation means that fossils do not survive in schists. Only less deformed rocks, such as slate and shale, can hold fossils.
Would You find fossils in quartz?
Quartz is a mineral not a rock. Fossils can be found associated with quartz in sedimentary rock not inside the quartz.
