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Yes. Because sedimentary rocks are often found on the surface of the earth, they are easily exposed to weathering. The longer a rock is out in the open, the softer it will become due to weathering, until it turns into sand. (This process takes millions of years depending on the size of the rock, however.)
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What factors affect the rate at which rocks abrade in running water?
Answer: Age of the rock, and speed of the water moving, hardness of rock, how much rock there is
What two things do sedimentary rocks record?
Sedimentary rocks record; 1. Time (Age) of formation. 2. Environment of formation.
In a plutonic dome the age of the rocks in the exposed core of the dome are compared to the sedimentary rocks around the core?
young
Which is older igneous or sedimentary?
Neither. You can get sedimentary rocks that are older than igneous rocks, or igneous that are older the sedimentary rocks. However, igneous rocks are formed from magma within the earth's crust, or as it extrudes onto the surface, while sedimentary rocks are formed from the erosion and redeposition of existing rocks, so generally in the life cycle of a rock the igneous form would come first.
Which dating method enables scientists to measure or estimate the absolute age of sedimentary rock?
Radiometric dating of igneous rocks that relate to the sedimentary rock
How do you see a sedimentary rocks age by looking at the fossils?
Find out what era the Fossil was from and then you can put a relative date on the sedimentary rock, assuming that the fossil was preserved in the sedimentary rock when it had died. It would not be the actual age because you need to date the radioactive isotopes for that.
Are only sedimentary rocks used for relative age determination?
No, igneous rocks can be used in this way based on the fact that an igneous intrusion will be younger than the material through which it passes. This is part of the principle of cross cutting relationships.
Is it true to say that radioactive istopes in clastic sedimentary rocks always predict an age that is younger than the sedimentary rock?
That would not be true due to the fact that sedimentary clastic rock is composed of particles of pre-existing rock.
Why is it difficult to determine the absolute age of a rock?
It is difficult to determine the absolute age of a sedimentary rock because sedimentary rocks are made up of diverse particles that are all different ages. As a result radioactive dating can only determine the age of the particles, not the whole rock.
Can geologists use radioactivity to find the absolute ages of sedimentary layers?
No, if you use radiometric dating techniques on sedimentary rocks you will find the age of formation of the constituent grains which will originally have been weathered and eroded from a source or parent rock and as such the age of the grains is potentially much larger than the age of the sedimentary rock that they have since been deposited to form.
What does relative dating mean?
Relative dating is a method used in geology to determine the age of rock layers or fossils in relation to each other. It does not provide specific numerical ages, but instead establishes a sequence of events based on the principles of superposition, original horizontality, and cross-cutting relationships. This method helps scientists understand the relative timing of geologic events.
How does aging affect rocks?
The rocks hit your face, and then there are going to be dents in it. Rocks turn rusty and grow mold as they age, and they get smoother and duller in colour
