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An erratic boulder is a boulder of rock which is of a different type than the local rocks. Erratic boulders are ofter more correctly termed glacial erractics as they were generally picked up, transported (often many hundreds of miles) and then finally deposited by melting glaciers.
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Which statement presents the best evidence that a boulder-sized rock is an erratic?
A boulder-sized rock composed of a different type of rock than the surrounding area is the best evidence that it is an erratic. This indicates that the rock was transported from a distant location by glaciers or other geological processes.
What is an isolated boulder left by a glacier called?
An isolated boulder left by a glacier is called a glacial erratic. These boulders are often different in composition compared to the surrounding rocks, as they have been transported and deposited by glaciers.
How would an erratic boulder provide evidence of the flood?
Erratic boulders can provide evidence of a flood because of the distance that is measured from where they were originally placed. This could only be through a strong current of water as they are usually displaced and out of place.
An isolated boulder left behind by a glacier?
This isolated boulder left behind by a glacier is called a glacial erratic. Glacial erratics are large rocks that are carried by glaciers and deposited in a different location when the glacier melts. They can vary in size from small pebbles to massive boulders and are often composed of different rock types than the surrounding landscape.
How are a moraine and an erratic different?
A moraine is a pile of rocks and dirt deposited in a heap, usually at the end of a glacier. An erratic is a large stone or boulder that has been deposited in a similar way when glaciers retreated, being of a totally different type of rock to that on which it was deposited.
What is a exampl of a glacier moving a boulder?
An erratic block.
How could a large rock be in an area surrounded by nothing?
An isolated large boulder (known as an 'erratic boulder') standing in the open, was left there by a glacier, after the ice retreated at the end of an ice age.. They are known as an 'erratic'.
Boulder left behind by a retreating glacier?
A boulder left behind by a retreating glacier is known as an erratic. A glacier is a moving river of ice and snow.
Which statement presents the best evidence that a boulder-sized rock is an erratic?
A boulder-sized rock composed of a different type of rock than the surrounding area is the best evidence that it is an erratic. This indicates that the rock was transported from a distant location by glaciers or other geological processes.
What is a large boulder that is left behind by a glacier and deposited among rocks of different type is called a?
Erratic
What is a large Boulder that is left behind by a glacier and deposited among rocks of a different type called?
Erratic
A large boulder that is left behind by a glacier and deposited among rocks of a different type is called a?
Erratic
What is an isolated boulder left by a glacier called?
An isolated boulder left by a glacier is called a glacial erratic. These boulders are often different in composition compared to the surrounding rocks, as they have been transported and deposited by glaciers.
A large boulder that is left behind by a glacier is called a what?
A large boulder left behind by a glacier is called a glacial erratic. These erratics are often significantly different from the surrounding rocks, providing clues about the glacier's movement and the rocks it passed over during its journey.
How would an erratic boulder provide evidence of the flood?
Erratic boulders can provide evidence of a flood because of the distance that is measured from where they were originally placed. This could only be through a strong current of water as they are usually displaced and out of place.
What can an erratic tell us?
An erratic, such as a erratic boulder, can provide information about the direction and size of ice movement during past glaciation periods. By studying the type of rock and its location in relation to the source bedrock, geologists can determine the distance the glacier traveled and the direction it moved.
Action of rock being placed somewhere else?
An erratic boulder is a rock that has been moved and left in position as the glacier recedes.
