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There are a number of such isotopes.
Geological dating requires isotopes with longer half lives than carbon-14 has. It also requires other things, such as that the elements involved do not wash away in water or escape as gas in an unknown manner.
What is usually done is a comparison of the amount of a radioactive element with the amount of the element it decays into. so geological dating is usually done by looking for pairs of elements bound in the rocks. These pairs include:
- samarium-147 and neodymium-143
- potassium-40 and argon-40
- rubidium-87 and strontium-87
- uranium-234 and thorium-240
There is also a dating technique in which tracks markings left by spontaneous fission of uranium are analyzed to compare quantities of uranium-235 and uranium-238.
A link to a Wikipedia article on radiometric dating is given below.
What else can I help you with?
Is it true that aquifers are permeable rock layers that are filled with water?
Yes, that's true. Aquifers are geological formations composed of permeable rock or sediment that can store and transmit water. They are saturated with water, allowing for the flow of groundwater, which can be accessed through wells or springs. The permeability of the material is crucial for the movement of water within the aquifer.
Is it true that a hollow rock lined with crystals is a geode?
it is true.
A wet rock generally melts at a lower temperature than a dry rock true or false?
True. Water has a lower melting point than most rocks, so when a rock is wet, the presence of water can lower the overall melting point of the rock.
Is this true or false pumice is a rock that has many tiny holes where gases were trapped?
true
Does a wet rock generally melts at a lower temperature than a dry rock true or false?
True. A wet rock generally melts at a lower temperature than a dry rock because the presence of water in the rock lowers its melting point due to the water acting as a flux, reducing the energy required for melting.
What is the significance of apparent dip in geological mapping and how does it affect the interpretation of rock formations?
Apparent dip in geological mapping is the angle at which rock layers appear to be tilted when viewed on the surface. It is important because it helps geologists understand the true orientation of rock formations beneath the surface. By accounting for apparent dip, geologists can more accurately interpret the structure and history of the rock layers, which is crucial for activities like mineral exploration and understanding the Earth's history.
Is it true that aquifers are permeable rock layers that are filled with water?
Yes, that's true. Aquifers are geological formations composed of permeable rock or sediment that can store and transmit water. They are saturated with water, allowing for the flow of groundwater, which can be accessed through wells or springs. The permeability of the material is crucial for the movement of water within the aquifer.
Is The Picnic at Hanging Rock a true story?
no this is not a true story
Is it true or false a rock's grains give the rock its texture?
Its true.
The magnetic orientation of a rock is determined when the rock solidfies?
True
Is it true or False that Fossil Fuels are liquid deposits of iron ore found only in sedimentary rock formations?
FALSE. Fossil fuels come from organic matter that has undergone anaerobic decomposition. We suspect that much of our fossil fuel comes from buried plankton and dinosaurs.
Are Bosnian pyramids true or a hoax?
The claim that there are pyramids in Bosnia is considered a hoax by the scientific community. Geologists and archaeologists have found no evidence to support the existence of man-made pyramids in Bosnia. Studies have shown that the so-called "Bosnian pyramids" are natural rock formations.
Is it true that Some of earth's interior is liquid rock?
it is true
Is it true that a hollow rock lined with crystals is a geode?
it is true.
What is the Definition of antedate?
Prior date; a date antecedent to another which is the actual date., Anticipation., To date before the true time; to assign to an earlier date; thus, to antedate a deed or a bond is to give it a date anterior to the true time of its execution., To precede in time., To anticipate; to make before the true time.
A wet rock generally melts at a lower temperature than a dry rock true or false?
True. Water has a lower melting point than most rocks, so when a rock is wet, the presence of water can lower the overall melting point of the rock.
Are basalt extrusive or intrusive?
Basaltic rock are true to be extrusive rock
