Radiometric dates calculated from minerals in sedimentary rocks produce ages that ________.
a. are just as accurate as when the technique is applied to igneous rocks
b. are too young (postdate sedimentary deposition)
c. are too old (predate sedimentary deposition)
d. represent the time the sediments became lithified

Answers

Answer 1

Answer:

c. are too old (predate sedimentary deposition)

Explanation:

Radiometric dates calculated from minerals in sedimentary rocks produce ages that are too old and often predates the sedimentary deposition.

Radiometric dating involves the uses of radioactive elements in rocks to measure the absolute age of rock.

It involves comparing the daughter to parent ratio because the decay started when the minerals formed in a rock in a period of crystallization or metamorphic event.

Sedimentary rocks are often made up of re-worked minerals. They are derived from pre-existing igneous and metamorphic rocks. When radioactive minerals from these sources finds their way into sediments, they give the age of their parent rock and not that of the sedimentary rock because their activity is not being reset.
Answer 2

The radiometric dates from minerals in sedimentary rocks are usually too old because they reflect the age of the minerals' original crystallization, not the formation of the sedimentary rock. Therefore, the correct answer is option c. For accurate dating, other methods like relative dating using cross-cutting igneous rocks are used.

The question states- "Radiometric dates calculated from minerals in sedimentary rocks produce ages that ________. The correct answer is c. are too old (predate sedimentary deposition).

This happens because radiometric dating measures the age of the minerals at the time they crystallized, which often occurs long before they were part of the sedimentary rock.

This makes the minerals in sedimentary rocks older than the rock itself. For dating sedimentary rocks, methods like relative dating of cross-cutting igneous formations or using fossils are more accurate.

Radiometric dating tells you different things depending on which geologic material you're studying. For minerals in igneous rocks, the radiometric age tells you when the mineral crystallized from magma.

In metamorphic rocks, some isotopes can tell you the age of metamorphism, but for sedimentary rocks, the radiometric age pertains to the original crystallization in their parent rock, not the sedimentary rock formation.

Therefore, as per the above explaination, the correct answer is option c that is "are too old (predate sedimentary deposition)".


Related Questions

Which of the following South American Regions is one of the driest places on Earth?
A. the Altiplano
B. the Guiana Highlands
C. the Pampas
D. the Atacama

Answers

Answer:

D. i got it right

Explanation:

Answer:

D. The Atacama

Explanation:

i took the test :D gl on your wrrk hope it helped! ^^

Match the layer of the earth with its best description. 1 . made of large plates that move 5 inner core 2 . plastic portion of the upper mantle of the earth 1 outer core 3 . very dense liquid of iron and sulfur 7 lower mantle 4 . thin, rigid surface of Earth 6 upper mantle 5 . made of solid iron 4 crust 6 . layer that includes the asthenosphere 2 lithosphere 7 . layer just outside of the outer core 3 asthenosphere

Answers

Answer:

1. Litosphere: made of large plates that move.

2. Asthenosphere: plastic portion of the upper mantle of the earth.

3. Outer core: very dense liquid of iron and sulfur.

4. Crust: thin, rigid surface of Earth.

5. Inner core: made of solid iron.

6. Upper mantle: layer that includes the asthenosphere.

7. Lower mantle: layer just outside of the outer core.

Which phrases apply to the formation of tides? Check all that apply. occur as Earth rotates through areas where ocean water bulges are higher when wind speed increases form due to the gravitational pull of the moon and Sun decrease at night and increase during the day occur on a predictable schedule

Answers

Answer:

1) occur as Earth rotates through areas where ocean water bulges

3)form due to the gravitational pull of the moon and Sun

5)occur on a predictable schedule

Explanation:

Which phrases apply to the formation of tides? Check all that apply.

1) occur as Earth rotates through areas where ocean water bulges

2) are higher when wind speed increases

3) form due to the gravitational pull of the moon and Sun

4) decrease at night and increase during the day

5) occur on a predictable schedule

I just did the lesson and got it right.

There are different aspect to tides formation. The phrases thatt apply to the formation of tides are;

It occur as Earth rotates through areas where ocean water bulges

It is formed due to the gravitational pull of the moon and Sun

It occur on a predictable schedule

High tides and low tides arises due to the moon. The moon's gravitational pull brings about the tidal force.

The tidal force makes the Earth and its water to swell out on the side closest to the moon and the side farthest from the moon. These bulges of water are referred to as high tides.

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A geologist determine that a sample of a mineral can’t be scratched by a steel naill but can be scratched by a Masonary drill bit. Based on this information, the sample mineral has to be softer than? A. fluorite B. Apatite C. Corundum D. Orthoclase

Answers

Answer:

C). Corundum

Explanation:

Corundum is a crystalline type of aluminum oxide that usually contains iron, titanium, vanadium and chromium traces. Corundum is an incredibly durable and hard material. It is the third hardest mineral, after moissanite and diamond.

A geologist determine that a sample of a mineral can’t be scratched by a steel naill but can be scratched by a Masonary drill bit. Based on this information, the sample mineral has to be softer than CORUNDUM.

Due to Corundum's hardness , it can scratch almost every other mineral, and Since corundum is harder than the drill bit of masonry that can smash the mineral sample and thus the mineral sample must be softer than corundum.

Answer:C

Explanation:Corundum is an extremely hard crystallized alumina, used as an abrasive. For example Ruby and sapphire

Corundum is extremely hard and it can scratch most minerals and than the drill bit of masonry that can smash the mineral sample.Which means mineral sample must be softer than corundum for this to be possible .

Therefore our answer is c

Where can you find the northernmost national park in the world?

Answers

Answer:

Greendland National Park.

Explanation:

It is probably within the reach of human technology to make the climate of Mars inhabitable. It might be several centuries before people could live there, even with breathing apparatuses, but some of the world’s great temples and cathedrals took centuries to build. Research efforts now are justified if there is even a chance of making another planet inhabitable. Besides, the intellectual exercise of understanding how the Martian atmosphere might be changed could help in understanding atmospheric changes inadvertently triggered by human activity on Earth.The main point of the argument is that:_____________
A. It is probably technologically possible for humankind to alter the climate of Mars.
B. It would take several centuries to make Mars even marginally inhabitable.
C. Making Mars inhabitable is an effort comparable to building a great temple or cathedral.
D. Research efforts aimed at discovering how to change the climate of Mars are justified.
E. Efforts to change the climate of Mars could facilitate understanding of the Earth’s climate.

Answers

Answer:

A, It is probably technologically possible for humankind to alter the climate of Mars.

Explanation:

It is said within the first sentence that "it is probably within the reach of human technology to make the climate of Mars inhabitable". This claim is most similar to answer choice A.

The topics brought up in the other answer choices are not even mentioned in this excerpt, meaning they can't be the main idea.

Final answer:

The main point of the argument is that the research into terraforming Mars is justified because it could provide valuable insights into Earth's own atmospheric challenges.

Explanation:

The main point of the argument is that d. "research efforts aimed at discovering how to change the climate of Mars are justified". Regardless of whether Mars becomes hospitable in the distant future or remains inhospitable due to its harsh climate and lack of infrastructure, the intellectual pursuit of terraforming could yield valuable knowledge. This includes a better understanding of atmospheric sciences and potential insights into Earth's climate challenges posed by the increase in carbon dioxide levels.

How many degrees are in a semicircle?

Answers

Answer:

180

Explanation:

Considering how a full circle is 360 degrees, 360/2=180.

A semicircle contains 180 degrees, half of a full circle's measurement of 360 degrees.

A semicircle has 180 degrees and is one-half of a full circle. A semicircle covers half of the 360 degrees that make up a full circle. The diameter is 180 degrees when a straight angle is formed by the two ends. Whatever their size, all semicircles share this characteristic.

In geometry, trigonometry and other mathematical fields, knowing the degrees in a semicircle is crucial because it aids in calculations involving angles and circular arcs. In many disciplines including engineering, architecture, and physics where curved shapes and circular motions are frequently used in design and analysis, the idea of a semicircle is used.

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which force causes bulging of the earth at the equator?​

Answers

An equatorial bulge is due to the centrifugal force exerted by the rotation about the body's axis. A rotating body tends to form an oblate spheroid rather than a sphere

Answer:An equatorial bulge is a difference between the equatorial and polar diameters of a planet, due to the centrifugal force exerted by the rotation about the body's axis. A rotating body tends to form an oblate spheroid rather than a sphere.

Explanation:

Why was slavery in the United States a paradox?

Answers

Answer:

Freedom and slavery, the 'central paradox of American history' In October 1705, Virginia passed a law stating that if a master happened to kill a slave who was undergoing “correction,” it was not a crime. Indeed, the act would be viewed as if it had never occurred.

Explanation:

Slavery in the United States was a paradox because the Constitution states that all men are created equal, yet the same document allowed for people of color to be enslaved.

Ridge Push is the result of?

Answers

Answer:

Gravity

Explanation:

What did The United Nation’s plan for the partition of Palestine include?

Answers

Answer:

provided for the termination of the Mandate, the progressive withdrawal of British armed forces and the delineation of boundaries between the two States and Jerusalem.

hope this helps :)

Explanation:

why is the Mississippi river more of a highway than the amazon river?

Answers

Final answer:

The Mississippi River is a more significant transportation route compared to the Amazon River due to its longer history of human settlement and development, its strategic location connecting major cities and agricultural regions, and its extensive use for navigation purposes with the introduction of steamboats.

Explanation:

The Mississippi River is more of a highway than the Amazon River due to several factors. First, the Mississippi River has a longer history of human settlement and development, which has led to the construction of infrastructure such as ports, docks, and transportation networks. Second, the Mississippi River flows through the heartland of the United States, connecting major cities and agricultural regions, making it a vital transportation route for goods and commerce. Lastly, the Mississippi River has been extensively used for navigation purposes, with the introduction of steamboats during the transportation revolution, which further solidified its status as a major water highway.

what are the plates that make up Earths crust

Answers

Answer:

The Tectonic plates.

Explanation:

Answer: The tectonic plates

Explanation:

Which of the following is not a reason why rivers were important to early trade?
A.
Waterways allowed for faster travel than land routes.
B.
They were a system of canals and devices to limit, store, and move water.
C.
They created more opportunities to trade with neighboring settlements.
D.
They encouraged growth, since more people sought to live in urban areas as trade centers grew.

Please select the best answer from the choices provided.

Answers

Answer:

B

Explanation:

Ed g :)

Rivers provided an efficient means of transportation for goods.Rivers facilitated communication and cultural exchange between different regions. Henec option B is correct .

Why Rivers were important to early trade for various reasons  ?

Rivers provided an efficient means of transportation for goods.

Rivers facilitated communication and cultural exchange between different regions.

Rivers provided a source of water for irrigation and agriculture, which enabled the growth of crops and the development of settlements.

Rivers provided access to natural resources such as timber, minerals, and fish, which could be traded.

Based on these reasons, if the incorrect option suggests that rivers did not play any significant role in facilitating trade, it would be incorrect.

The first civilizations were drawn to areas near rivers because they offered a consistent supply of drinkable water and made the soil fertile for raising agriculture.

Also, transportation of goods and people was simple, and the inhabitants of these civilizations could hunt and fish the animals that came to drink from the water.

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How do toponyms become a part of the cultural landscape? Give an example?

Answers

Answer:

A toponym is the name of a place. Boston, Australia, and Montreal are all toponyms. ... Words ending in nym are types of names, like an eponym is a name for a thing that came from a person's name. A toponym, therefore, is a name for a place.

Explanation:

Toponyms serve as symbols of regional culture and thus reflect the history, habitat and environment of a place. Toponymic studies examine the origin and development of an ethnic group, present the spatial patterns of a certain culture and reveal both man- made and physical environmental features of a region.

Winter temperatures in Great Britain and Norway are warmer than one might expect to find at high latitudes because westerly winds steer the warm Gulf Stream current eastward away from the east coast of North America and toward Europe. True or false?

Answers

Answer:

true

Explanation:

google

Before the Industrial Revolution, a light-colored variety of peppered moth was well camouflaged among light-colored lichens that grew on the bark of trees around London. A dark-colored variety of the peppered moth probably existed but was rarely observed because it was so easily seen by birds and eaten. When industry was introduced in London, soot killed the pollution-sensitive lichens, exposing dark tree bark. As a result, the dark- colored variety of the moth became the better carnoutlaged of the two moth varieties.
57.

In this situation, what is the relationship between the birds and the moths?
(1) producer-consumer
(2) predator-prey
(3) parasite-host
(4) autotroph-heterotroph

Answers

Answer:

2. Predator - Prey

Explanation:

Preys are animals or fauna that are haunted and killed by another animal for the sake of food. Preys are simply animals haunted for food.

Predators are the animals that naturally preys or hunt other animals for food. They kill and eat other animals.

In this scenario, the bird is the predator that hunts and kill the preys which are the moths for food. Therefore, the relationship that exist between the birds and moth is a predator-prey relationship.

Answer:

The correct answer is:

Predator-prey (2)

Explanation:

A predator-prey relationship is a relationship between two species when one species is being fed on (prey) and another species is being fed (predator). In this example, the dark-colored moths were easily seen and eaten by birds, hence the birds are the predators, while the moths are the preys.

The other types of relationships listed are

Producer-consumer; here a species of organism are responsible for the conversion of simple chemical substances into more complex substances called food these organisms are called producers. Examples are the green photosynthetic plants that produced food substances from carbondioxide and other simple substances, while consumers are every other organisms that lack the ability to make these special conversions

parasite-host; a parasite-host relationship is one when an organism of usually a lesser complex species (parasite) benefits from another organism(host) thereby harming it in the process.

autotroph-heterotroph; similar to producer consumer relationships, autotrophs are organisms that can produce their own food from substabces found in their sorroundings eg light for photosynthetic organisms and chemicals for chemosynthetic organisms, while heterotrophs are organisms that depend on other organisms (plants or animals or both) for food.

PLEASE HELPPPP!!!!!!!!!!!!Which statement is TRUE about northern geography and its impacts?

A.The climate mekes farming difficult in New England

B.Very few trees grow in the Great Plains due to the cold

C.The most northerly States have the longest growing season

D.States in the north experience only two different seasons​

Answers

Answer:

c

Explanation:

The correct statement about northern geography and its impacts is A: The climate makes farming difficult in New England. This is a true reflection of the challenges faced by the region due to its climate.

The North is one of the least densely populated regions in North America, characterized by brutally cold winters, short growing seasons, and poor soil quality. These factors make farming particularly challenging in places like New England. The statement that the most northerly states have the longest growing seasons is incorrect due to the extreme cold and long winters, which significantly shorten the growing period for crops. Additionally, the Great Plains, contrary to the assertion that very few trees grow there due to the cold, actually have a different natural vegetation profile, with tree growth not being primarily limited by temperature. As for the North experiencing only two seasons, this is also incorrect as the northern states experience four distinct seasons, although winter may be significantly longer and harsher than in other regions.

Which best describes the soils found in southeastern United States? A. frozen B. Sandy C. Weathered D. Young

Answers

Answer:

Weathering

Explanation:

Just took the test

Answer:

Weathered

Explanation: i just copied it off test


Tariffs, quotas, and subsidies are examples of

Answers

Answer:

trade barriers

Explanation:

Answer:

Trade Barriers

Explanation:

Tariffs, quotas, and subsidies are examples of trade barriers. Trade barriers is a step taken by different countries to protect their own citizens jobs by limiting other countries to sell foreign produced goods in some way so that goods produced at home are more appealing to the consumer.

Please help!!!!
How can you be a good steward through acts of service?

Answers

Answer:

By helping somebody

Explanation:

Answer:

You can earn reputation for being a helping hand. If your polite and nice  and helping people then you will get more respect from other people and for yourself. There the matter of why you gotta give something to get something if your selfless then you would be perfect for helping. Good karma comes back around so there is some reward. Should there be an award to helping someone ? To the point if you help someone then perhaps good will come to you like being a good citizen or Samaritan. Depending on the people you help and the deeds you do you may get the key to the city for the good Samaritan award  and that's a act of service's .

What is the epic center of the earthquake​

Answers

Answer:

The epicenter is the point on the earth's surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins.

Explanation:

What is the function of the large, sheetlike pectoralis muscles of a bird it moves the tail to form a rutter system it anchors the feet when the bird perches it provides the wing upstroke it provides the wing's downstroke?

Answers

Answer:

it provides the wing's downstroke

Explanation:

the function of the large, sheetlike pectoralis muscles of a bird is that it provides the downstroke of the wings.

The pectoralis muscles of a bird enable the wing's downstroke during flight, while the supracoracoideus muscles allow the upstroke, with both attaching to the sternum's keel. The sternum's enlarged size and the flexible furcula (wishbone) support the demand for muscular strength and flexibility required for flight.

The large, sheetlike pectoralis muscles of a bird are primarily responsible for the wing's downstroke during flight. These muscles are highly developed and account for a significant percentage of a bird’s body mass relative to most mammals. The contraction of the pectoralis major muscles attaches to the keel of the sternum and pulls the wings downward. In contrast, the supracoracoideus muscles are involved in the wing upstroke, moving the wings upward through a tendon mechanism that passes over the shoulder bones. Both sets of muscles play critical roles in flight, with the pectoralis assisting in generating lift and thrust.

Birds' skeletal structures, including a large sternum and a fused clavicle forming the furcula or wishbone, further support the muscle work during flapping. The large sternum accommodates the substantial flight muscles, while the elastic furcula provides resilience and strength to the shoulder girdle as the wings beat.

Analyze the photo below and answer the question that follows.
Rows of statues of men in military clothing.
Photo by Anita Ritenour

This terracotta army was found near the Yellow River Valley in East Asia. It was constructed by an early dynastic ruler in __________.
A.
India
B.
China
C.
Pakistan
D.
Bangladesh

Please select the best answer from the choices provided.

Answers

Answer:

Option B

Explanation:

This terracotta army was found near the Yellow River Valley in East Asia. It was constructed by an early dynastic ruler in China

Answer:

ITS C

Explanation:

When the Soviet Union controlled Central Asia _?_ .
A. people were forced to work on government farms
B. industrialization was discouraged
C. urban areas declined
D. most people became nomadic herders

Answers

B because is the correct answer

Final answer:

During the control of Central Asia by the Soviet Union, people were compelled to work on collective farms as part of the government's collectivization policy, which brought about significant demographic and cultural changes as well as economic hardships, including widespread famines.

Explanation:

When the Soviet Union controlled Central Asia, people were forced to work on government farms. This policy was part of a larger movement called collectivization, where the government sought to reorganize agriculture into large farm collectives instead of individual farms. This process entailed nomadic peoples settling in cities or on collective farms and donating their land, animals, farm equipment, and farm buildings to the collective farm.

During this period, Central Asians experienced a significant cultural shift as millions of Russians and Ukrainians were resettled into the region, introducing a mix of local and Russian culture, particularly in urban areas. Furthermore, the massive resettlement and collectivization policies led to widespread famine, particularly in the 1930s, due to crop seizures and mismanagement. This had long-lasting effects, including the loss of livestock which did not recover until the 1950s.

What is at the top of the Grand Canyon and why is this significant?

Answers

Answer:

The top of the Grand Canyon is made up of Kaibab Limestone. Which contains marine fossils which indicate that it originated at the bottom of the sea.

Explanation:

which of the following are examples of a negative feedback loops? A. global warming B. a thermostat that controls the heat in your home C. Loss of bioriversity D. fruit ripening E. convection currents F. I dont know yet​

Answers

Answer:

C and A

Explanation:

Negative feedback occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.

The following are the examples of negative feedback loops:

A. global warming

C. Loss of biodiversity

A negative feedback loop is also called as an inhibitory loop. It is a kind of self-regulating system.It inhibits the future production of output by the system. For example, the body reduces manufacturing of some proteins or hormones when their level is too high. A thermostat that controls heat, ripening of fruit, and convectional currents are not the examples of a negative feedback loops. Global warming is the increase in the green house gases into the atmosphere. Carbon dioxide is one of green house gases. The level of carbon dioxide in the atmosphere can be controlled by the absorption of carbon dioxide gas from the atmosphere by the plants. This process is self regulating. But if plants are removed by deforestation then it will increase the global warming. Loss of biodiversity can inhibit the future production of output of the system that is the total number of species that will reduce in future.

Hence, A. global warming, and C. Loss of biodiversity are the correct options.

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what is the position of the winds in July

Answers

Answer:

30 degrees north of the equator

Explanation:

When it comes to an earthquake, who are the upstanders?

Answers

Answer:

Volunteers?

Explanation:

Because they help fix the community

Answer:

Fire men would be more of power  in this area along with cops and evacuation teams . The members of the city would also be beneficial from here .

Explanation:ItsaGthang

Carbohydrate metabolism is responsible for the formation, breakdown, and interconversion of carbohydrates in living organisms. The most important carbohydrate is glucose that is metabolized by all living cells in the first energy-yielding pathway known as glycolysis. True or false?

Answers

Answer:

True

Explanation:

The carbohydrate is metabolism and is a fundamental biochemical process that ensure d a constant supply of energy to the living cells and an important component is a glucose that is broken down into the glycolysis.The Glycolysis is a metabolic pathway for the circular respiration to produce energy in the form of ATP through a distinct phase of the carbon rings of glucose.
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