Is the age of the middle layer of a rock sample is between 300 million years and 1 billion years Which of the following could be the age of the lowermost layer?
“1.5 billion years to 2.5 billion years”. [ If the age of the middle layer of a rock sample is between 300 million years and 1 billion years, the lowermost layer must be older (Law of Superposition), and so could be 1.5 billion years to 2.5 billion years old. ] This answer has been confirmed as correct and helpful.
Are rock layers H and I younger or older than 100 million years?
What is the numerical age of rock layer H? i. Rock layer H is 850 million years old.
What can be determined about the top layer of sedimentary rock it is the youngest layer of rock it is always the most diverse Layer nothing can be determined until examined and tested it is the oldest layer of rock?
Answer Expert Verified It is the youngest layer of rock. Explanation: The layer is the most recent; it means that the top of the rock is the younger one. When a rock forms, gradually, the older layer goes to the bottom and continuously younger layer form at the top of the rock.
How do you date geologic layers?
To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.
What can be determined about the top layer of sedimentary rock?
The uniformitarian principle states that: Slow processes of erosion and deposition created landforms. What can be determined about the top layer of sedimentary rock? It is the youngest layer of rock.
Why are rock layers different colors?
Different colors of sedimentary rock are determined by the environment where they are deposited. Red rocks form where oxygen is present. Darker sediments form when the environment is oxygen poor.
How do you read rock layers?
Geologists are able to ‘read’ the rock layers using relative and absolute dating techniques. Relative dating arranges geological events – and the rocks they leave behind – in a sequence. The method of reading the order is called stratigraphy (layers of rock are called strata).
What causes rock layers to drop?
When uplift and erosion brings bedrock to the surface, its temperature drops slowly, while its pressure drops immediately. The sudden pressure drop causes the rock to rapidly expand and crack; this is called pressure expansion. Sheeting or exfoliation is when the rock surface spalls off in layers.
How do you find the oldest rock layer?
Sedimentary rocks are deposited one on top of another. Therefore, the youngest layers are found at the top, and the oldest layers are found at the bottom of the sequence.
How old was the oldest rock layer Brainly?
Answer: The ages of these felsic rocks are generally between 2.5 and 3.8 billion years. The approximate ages have a margin of error of millions of years. In 1999, the oldest known rock on Earth was dated to 4.031 ±0.003 billion years, and is part of the Acasta Gneiss of the Slave craton in northwestern Canada.
What are the youngest layers of the earth?
The youngest rock layers are at the top and the oldest are at the bottom, which is described by the law of superposition.
Which fossil is the youngest Brainly?
Which fossil is the youngest? The answer is. The Oldest is : trilobite ( C ) The Youngest is : ammonite ( A )
What can you learn from a fossil?
By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.