opanthon
opanthon opanthon
  • 24-02-2017
  • Biology
contestada

What causes a continental shield to form?

Respuesta :

amospark0967
amospark0967 amospark0967
  • 24-02-2017
A shield is generally a large area of exposed Precambrian crystalline igneous and high-grade metamorphic rocks that form tectonically stable areas. In all cases, the age of these rocks is greater than 570 million years and sometimes dates back 2 to 3.5 billion years.
Answer Link

Otras preguntas

Two inches equal approximately how many centimeters?
How long is the image of a metrestick formed by a plane mirror?
Who was the first person to see cells?
what are the abiotic elements of the ocean? :) :) :) :)
if two young people of the same age commit the same crime, would you expect them to face the same consequences. yet, under the ycja they may or they may not. to
A car travelling at 45 mi/hr (20.1 m/s) comes to rest in 4 seconds. Find the acceleration of the car in m/s2.
The equation y+2=2(x-d) is the line that passes through the points (-1,-2) and (2,4). What is the value of d?
one major result of the completion of the erie canal
The sum of two numbers is 63 . The larger number is 7 more than the smaller number. What are the numbers?
What is the probability of picking 3 people out of 7