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How does an extrusion help date rocks?
DISGUST
How extrusion forms?
An extrusion is an igneous rock layer formed when lava flows onto Earth's surface and hardens. Extrusions are always younger than the rocks below it.
Is the extrusion older or younger than top and bottom rock?
To determine if the extrusion is older or younger than the top and bottom rock layers, you can apply the principle of superposition, which states that in an undisturbed sequence of sedimentary rocks, the oldest layers are at the bottom and the youngest are at the top. If the extrusion cuts through the rock layers, it is younger than the rocks it intrudes. Conversely, if the rock layers wrap around the extrusion, then the extrusion is older. Without specific details about the geological context, this is the general approach to answering the question.
Is an extrusion older or younger than the rock layer below it?
Extrusion is older than intrusion because, an extrusion is always younger than the rocks below it. An intrusion is always younger than the rock layers around and beneath it. Hope the answers correct ;)
What type of area granite and basalt rocks found in?
Principally and respectively they are the main continental and oceanic crust rocks of the Earth. They will also appear on the surface as igneous rocks by intrusion or extrusion (volcanism).
What clues of extrusion tell geologists?
Geologists can identify extrusion by looking for volcanic features such as lava flows, ash deposits, and volcanic cones. The presence of volcanic rocks, such as basalt or rhyolite, can also indicate past volcanic activity associated with extrusion. Additionally, geologists may identify extrusion sites by studying the topography and landforms created by lava spreading over the surface.
Which is a process involved in the information of sedimentary rocks extrusion . intrusion . compaction?
The process involved in the formation of sedimentary rocks is compaction. Compaction occurs when sediments accumulate in layers and are buried under additional layers, leading to increased pressure that reduces the space between sediment particles. This process helps to cement the sediments together, forming solid rock. Extrusion and intrusion are terms related to igneous rocks, not sedimentary ones.
What is a hardened layer in a volcano?
As lava cools, it hardens and forms a thick layer of rock. These rocks are known as igneous rocks. An example of an igneous rock is pumice, which is used in spa treatments to soften feet.
What was obsidian before it was obsidian?
It was liquid rock (magma) which solidified after an extrusion or eruption. Crustal rocks can re-dissolve into magma during subduction of oceanic crust.
What tells geologists how extrusion forms?
I am learning about this in my Science class, and when a geologist looks at an extrusion, they know it's an extrusion because it is Igneous rock, and an extrusion helps tell the reletive ages of the layers around it.
When was The Lepore Extrusion created?
The Lepore Extrusion was created on 2006-10-17.
When was The Mary-Sue Extrusion created?
The Mary-Sue Extrusion was created in 1999.
