Typical pop progression

[LvJz]

i - vi - iii - VII - i

Am - F - C - G - Am

What type of cadence is VII - i?

[FatJeff]

Your Roman numerals are a bit off. The chords you write would be i - bVI - III - bVII - i.

I don't know if the cadence bVII-i has an official name, but the way I think of this is that the G (the bVII of Am) is really acting as a V of the relative major, C. Since C and Am are so strongly related, the replacement of C by Am makes sense within the construct of the progression.

[Joe Carlson]

Deceptive cadence


A chord progression where the dominant chord is followed by a chord other than the tonic chord usually the sixth chord or superdominant chord or submediant chord (V-VI), but sometimes something else. The "V" represents the chord based on the fifth step of the scale and the "VI" represents the chord based on the sixth step of the scale. The dominant to superdominant progression (V-VI) is deceptive to the listener, because the tendency is for the dominant chord to resolve to the tonic chord. In the tonality of "C" major, a deceptive cadence would be the dominant (V) G major chord (G-B-D) moving to the superdominant (VI) A minor chord (A-C-E).

Deceptive cadence

[JonR]

Joe's right, it's a deceptive cadence, if the key is C major.
However, if it's clear that Am has been established as the key chord (which I don't think it has in that sequence), then G-Am could be called an "aeolian cadence", or at least a modal cadence of some kind (G-Am could occur in A dorian mode too).
IOW, it depends (IMO) on whether you get a clear sense of "coming home" to the Am, or whether the Am is a slight surprise, because you were expecting C.
As I say, this sequence (which is indeed a very popular pop/rock progression) is ambiguous, because it's a cycle or loop. As well as Am-F-C-G (and round again from Am), it can run C-G-Am-F (and round again from C), and can sometimes start on the F or G too.
Generally I'd say it gravitates to C as overall key centre, whatever chord it starts (and ends) on.