In which situations is the principle of cross-cutting relationships useful in determining relative age?
Cross-cutting relationship is a principle of geology that states that "The geologic feature which cuts another is the younger of the two features."
In other words, The Principle of Cross-Cutting Relationships states that rock formations that cut across other rocks must be younger than the rocks that they cut across.
Three options among which can be useful in determining relative age are:
1. The formation of an intrusion in the Earth’s surface.
An intrusion is any formation of intrusive igneous rock. Deep-seated intrusions are recognized from the way they have burst through the overlying strata.
2. Igneous rock forms between sedimentary layers.
This can definitely help in determining relative age because sedimentary rocks will be the older rock than igneous rock as igneous rock has formed between sedimentary rocks.
3. Lava flows form on top of one another from several eruptions over time.
The recent lava eruption will be the younger structure among the lava eruptions over the time.
A thrust fault increases the thickness of the crust as it moves toward a continental interior in a mountain belt; yet the crust beyond the mountain front stays the same thickness. Isostasy would suggest that the area at the mountain front, where the thrust emerges, should ________ over time.
Answer:
subside
Explanation:
Isostasy is a geographical term which describes the condition of gravitational equilibrium that exists within the Earth's crust and mantle, there by, making the crust stays above a heights that relies on its physical attributes, such as thickness and density.
In Isostasy, its occurrence process involves principles of buoyancy in which an Earth crust apply stress on the less stronger mantle, such that for over a geological time moves laterally in a way that the load is contained by height adjustments.
Hence, Isostasy would suggest that the area at the mountain front, where the thrust emerges, should SUBSIDE over time.
Uniformitarianism means:________. a. neither the scientific past nor the future can be predicted because physical laws change over time. b. earth's surface, including the oceans and continents, has always been the same and will always remain unchanged. c. geologic processes on Earth all operate at roughly the same speed, which has not changed over time. d. geologic processes that operate today operated in the past at about the same speed.
Answer:
Uniformitarianism means:
d. geologic processes that operate today operated in the past at about the same speed.
Geologists study present geologic processes, whether they are sudden, like an earthquake, or slow, like the erosion of a river valley, to gain insight into the past. This is known as uniformitarianism.
Thus, option D is correct.
Who made uniformitarianism?The theory of uniformitarianism was developed by Charles Lyell in the 19th century and is based on the writings of James Hutton. According to this hypothesis, the forces and processes that can be seen at the surface of the earth are the same ones that have sculpted the planet's terrain throughout natural history.
The belief that the same natural laws and processes that govern the universe today and have always governed it in the past and apply to all of it is known as uniformitarianism, also known as the Doctrine of Uniformity or the Uniformitarian Principle. Today, we accept uniformitarianism as genuine and understand that major catastrophes like earthquakes, asteroids, volcanoes, and floods are a regular part of the earth's cycle.
For more information about uniformitarianism refer to the link:
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In which mountain range can you find Rich Mountain the highest peak in Oklahoma Region? A. the Ouachita Mountains B. the Ozark Mountains C. the Wichita Mountains D. the Arbuckle Mountains
Answer:
A.) the Ouachita Mountains
Which word best describes early American foreign policy?
Answer:
I would say difficult
Explanation:
Because the American foreign policy was a brutal law.
What are the major river and mountain chain of the northeast region of the united states called?
Answer:
The mountains from northeast region of the United States are called Appalachian Mountains.
The major river is Saint Lawrence River.
