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How do earths layers contribute to the planets physical characteristics?
The Earth's layers contribute to the planet's physical characteristics by the types of rocks these layers produce. The rock formation of the Earth's surface define the physical characteristics of the planet.
What two types of ages of rocks that geologists talk about?
Geologists talk about relative ages and absolute ages of rocks. Relative ages are determined by the order of rock layers, with younger layers on top and older layers at the bottom. Absolute ages are determined through radiometric dating methods to provide a specific age in years for a rock sample.
What are relative fossils?
Answer: The age of a rock compared to the ages of the rock layers.
Which law deals with the relative ages of layers of sedimentary rocks?
Time
What is correlative dating?
Correlative dating is a method used in geology to determine the relative ages of rock layers or formations in different locations by comparing their characteristics and determining their equivalence based on similarities. This technique relies on identifying similar patterns, fossils, or other features in different rock layers to establish a chronological sequence.
What characteristics was first used to identify earths layers?
the berrics
How are the sublayers of the mantle divided?
Based on the physical characteristics of those layers.
How can you use fossils and geological features to interpret the relative ages of rock layers?
you cant
How do the ages of rock layers change as you go from the axial plane of an anticline outwards towards the limbs?
In an anticline, the ages of rock layers change in a predictable manner as you move from the axial plane outwards towards the limbs. The oldest rock layers are found at the core or axial region of the anticline, while progressively younger layers are located towards the outer limbs. This folding structure results from tectonic forces that compress the Earth's crust, causing the oldest layers to be pushed upward and exposed at the center, with younger layers lying above them. Thus, the pattern of rock ages reflects the geologic processes that formed the anticline.
What type of dating involves matching up layers of rocks from two?
The type of dating that involves matching up layers of rocks from two different locations is known as lithostratigraphic correlation or stratigraphic correlation. This method allows geologists to establish the relative ages of rock layers by comparing their characteristics and sequences. By correlating these layers, scientists can reconstruct geological histories and understand the temporal and spatial relationships of rock formations. This technique is essential in fields like paleontology and archaeology for dating and contextualizing findings.
Why can you tell the relative age a fossil if layers of rock have been shifted by earthquakes?
Even if layers of rock have been shifted by earthquakes, geologists can still determine the relative age of fossils by examining the principle of superposition, which states that in undisturbed sedimentary rock layers, older layers are found below younger layers. Additionally, fossils can be correlated with known time periods based on their characteristics and the fossil record. By identifying the types of fossils present and their relationships to one another, scientists can infer their relative ages despite any geological disturbances.
By applying the law of superposition what dates can be determined?
By applying the law of superposition, the relative ages of sedimentary rocks can be determined. This allows geologists to arrange rock layers in chronological order, with the oldest layers at the bottom and the youngest layers at the top. Absolute dates (specific numerical ages) cannot be determined solely through the law of superposition.
