This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: How do the eruptions that created the Columbia Plateau differ from eruptions that create large ... (Read 80 times)

debasdf

  • Hero Member
  • *****
  • Posts: 570
on: Jul 14, 2018
How do the eruptions that created the Columbia Plateau differ from eruptions that create large composite volcanoes?
 
  What will be an ideal response?

Question 2

What type of volcanic structure is Shiprock, New Mexico, and how did it form?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

beccamahon

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 14, 2018
Answer to Question 1

The Columbia Plateau eruptions were fissure eruptions of fluid basalt rather than violent pyroclastic andesitic eruptions. The flood basalts flow outward and form large flat plateaus rather than building tall conical structures.

Answer to Question 2

Shiprock is a volcanic neck. When a volcano becomes inactive, congealed magma often becomes preserved in the feeding conduit of the volcano as a crudely cylindrical mass. Over time, all volcanoes will succumb to forces of weathering and erosion. Over time, the rock occupying the volcanic conduit, which is highly resistant to weathering, may remain standing above the surrounding terrain long after the cone has been worn away.


debasdf

  • Member
  • Posts: 570
Reply 2 on: Jul 14, 2018
Excellent

ebonylittles

  • Member
  • Posts: 318
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Color enhanced X ray of large malignant tumor in the right lung. Color enhanced X ray of large malignant tumor in the right lung.
Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I
Ceiling effect of aspirin. A plateau is reached where increasing the dose of aspirin will not create ... Ceiling effect of aspirin. A plateau is reached where increasing the dose of aspirin will not create ...
Circling the forearm to create movement at the elbow. Circling the forearm to create movement at the elbow.
Anatomy of the Large Intestine (colon) Anatomy of the Large Intestine (colon)
Video: Appendicitis Animation

For a complete list of videos, visit our video library