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The age of disturbed rocks may have to be determined by?
The age of disturbed rocks can be determined by methods such as radiometric dating, which measures the decay of radioactive isotopes in the rocks, or by studying the index fossils found within the rocks to determine their relative age compared to other layers. Stratigraphic principles can also help in determining the sequence of rock layers and their ages.
The age of the earth's crust can best be determined from the studies of?
The age of the Earth's crust can be best determined using radiometric dating techniques on rock samples collected from the crust. By measuring the decay of radioactive isotopes in these rocks, scientists can calculate the age of the crust. Additionally, studying the magnetic properties of the rocks can provide further insights into the age of the Earth's crust.
Rocks in ocean crust are as old as years?
Rocks in ocean crust range in age from very young (less than a million years old) at the mid-ocean ridges to much older (up to hundreds of millions of years old) at the subduction zones. The age of ocean crust rocks provides valuable information about the history of tectonic plate movement and the evolution of the oceans.
How old are the oldest rocks on the ocean floor compared to the age of the earth?
In 1990, after 20 years of searching, geologists found the oldest oceanic rocks by drilling into the seafloor of the western Pacific. These rocks turned out to be about 200 million years old, only about 4% of the Earth's age.
How are Ocean floor rocks are different from continental rocks?
Oceanic crust is composed primarily of the dense volcanic rock basalt. Continental crust is composed primarily of the intrusive igneous rock granite, less dense than basalt.
How can a rocks exact age be determined?
Me
What is the age order of rocks in each dome and basin?
In geological structures such as domes and basins, the age order of rocks typically follows a distinct pattern. In a dome, the oldest rocks are found at the center, with progressively younger rocks radiating outward. Conversely, in a basin, the youngest rocks are located at the center, surrounded by older rocks that dip toward the center. This arrangement occurs due to the processes of uplift in domes and subsidence in basins.
How did science discover the age of the rocks on the ocean floor which are older younger?
Science determined the age of ocean floor rocks primarily through the principles of radiometric dating and seafloor spreading. By analyzing the magnetic properties of rocks, researchers observed that the ocean floor exhibits distinct patterns of magnetism that correspond to periods of magnetic reversal, which allows them to date the rocks based on their distance from mid-ocean ridges. Younger rocks are found closer to these ridges, where new crust is formed, while older rocks are located further away, supporting the theory of plate tectonics and the dynamic nature of the Earth's crust.
What is the pattern of seafloor age in the ocean basins?
The pattern of seafloor age in ocean basins generally shows that the youngest seafloor is located at mid-ocean ridges, where new oceanic crust is formed through volcanic activity. As you move away from these ridges, the age of the seafloor increases, with older crust found near the continental margins. This pattern is a result of the process of seafloor spreading, which continuously pushes older crust away from the ridges. Consequently, the age of the seafloor increases symmetrically on either side of the mid-ocean ridges.
How do you determine the age of igneous rocks?
Relative age can be determined using superposition and cross-cutting relationships. Absolute age can only be determined using radiometric dating methods, such as Rb-Sr.
The age of disturbed rocks may have to be determined by?
The age of disturbed rocks can be determined by methods such as radiometric dating, which measures the decay of radioactive isotopes in the rocks, or by studying the index fossils found within the rocks to determine their relative age compared to other layers. Stratigraphic principles can also help in determining the sequence of rock layers and their ages.
The age of the earth's crust can best be determined from the studies of?
The age of the Earth's crust can be best determined using radiometric dating techniques on rock samples collected from the crust. By measuring the decay of radioactive isotopes in these rocks, scientists can calculate the age of the crust. Additionally, studying the magnetic properties of the rocks can provide further insights into the age of the Earth's crust.
A relative age of the rocks of the earths crust can be determined by using the laws of?
superposition a&c- Jackie
When scientist drilled into the ocean floor taking rock samples what did they discover about the age of the rocks?
oldest at the bottom youngest on top. Its the law of superposition. They also found that the age of rocks increases with increased distance from mid-ocean-ridges.
What happens to rocks when you get further away from the mid ocean ridges pertaining to age?
Age increases as we move further away from the MOR. Oldest rocks being of age 200 million years.
How would the age of the oldest rocks on the continents compare with the age of the oldest rocks on the seafloor if the rock on the continents is continually formed but not removed?
The oldest rocks on the continents would be much older than the rocks on the sea floor because the rocks on the continents are not being removed unlike the rocks on the sea floor that are made by the mid-ocean ridge are being removed by deep ocean trenches. this prossess that is occuring on the sea floor is called sea floor spreading. evidence of this is the Pacific ocean shrinking and the Atlantic ocean growing.
How did scientists determine that the age of rocks farther from the mid-ocean ridge were older?
thye pulled rocks from a drill and studied them obviously
