An earthquake powerful enough to move out of their places EVERY mountain and island must be powerful enough to wake up many volcanoes...
Seismic activity and volcanism are not directly related to each other. The former is caused by a shifting of the plates while the latter is caused by magma flow. While an earthquake can affect the geometry of the magma chamber in a volcano and trigger its eruption by weakening it, it can also have the opposite effect, or no affect on it.
What's the first thing you note in those verses in Revelation? The earthquake. Now turn your Bible to Joel chapter 2 and look at verses 3 and 10. The earth quakes before them. A fire devours before them. Before who? The northern army.
Jeremiah 6:22-24
22 Thus says the Lord:
“Behold, a people comes from the north country,
And a great nation will be raised from the farthest parts of the earth.
23 They will lay hold on bow and spear; they
are cruel and have no mercy; their voice roars like the sea; and they ride on horses, as men of war set in array against you, O daughter of Zion.”
24 We have heard the report of it; our hands grow feeble. Anguish has taken hold of us, pain as of a woman in labor.
Jeremiah 50:41-43
41 “Behold, a people shall come from the north,
and a great nation and many kings shall be raised up from the ends of the earth.
42 They shall hold the bow and the lance; they
are cruel and shall not show mercy. Their voice shall roar like the sea; they shall ride on horses, set in array, like a man for the battle, against you, O
daughter of Babylon.
43 “The king of Babylon has heard the report about them, and his hands grow feeble; anguish has taken hold of him, pangs as of a woman in childbirth.
Jeremiah 51:27
"Set up a banner in the land, blow the trumpet among the nations! Prepare the nations against
her,
call the kingdoms together against
her:
Ararat,
Minni, and
Ashkenaz. Appoint a general against her; cause the horses to come up like the bristling locusts."
Ezekiel 38-39 is a different account belonging to the same series of events. Everything is tied together.
Isaiah 47:8
“Therefore hear this now,
you who are given to pleasures,
who dwell securely, who say in your heart, ‘I
am, and
there is no one else besides me; I shall not sit
as a widow, nor shall I know the loss of children’".
Ezekiel 39:6
“And I will send fire on
Magog and on
those who live in security in the coastlands.
2 Peter 3:10
"But the day of the Lord will come as a thief in the night, in which the heavens will pass away with a great noise, and the
elements will melt with fervent heat; both the earth and the works that are in it will be burned up."
Gr.
Stoicheion: It's where we get the terms "element" and "stoichiometry" from.
Ezekiel 39:7
"So I will make My holy name known in the midst of My people Israel, and I will not
let them profane My holy name anymore.
Then the nations shall know that I am the Lord, the Holy One in Israel."
Revelation 6:15-17
15 And the kings of the earth, the great men, the rich men, the commanders, the mighty men, every slave and every free man, hid themselves in the caves and in the rocks of the mountains,
16 and said to the mountains and rocks, “
Fall on us and hide us from the face of Him who sits on the throne and from the wrath of the Lamb!
17
For the great day of His wrath has come, and who is able to stand?”
Sorry, but when you take all of these Scriptures together(and numerous others that I haven't mentioned here) it becomes evident to me that its not a case of the earth shaking the tar out of everyone and burning them up with mass volcanic eruptions and meteor strikes. I don't recall volcanoes, magma, or meteor strikes making regions of the earth uninhabitable forever or requiring special burial procedures(Ezekiel 39:11-16) comparable to that of nuclear contamination.
It also begs the question, why would anyone in their right minds go hide in caves and rocks of mountains before/during/after a great earthquake? Excluding the aforementioned suggestions presented by others, the only other explanation could be found when the dawn of the nuclear age arose from which the Cold War came about.