[Blog Post] An Allegory of Salvation (Koen Gheuens & Cary Rapaport)

[Searcher]

About the T-O map, believe it or not but I think you may be right. Does that mean the top right rosette represents the physical world since it has sky, earth and water present?

This is a hard question, indeed. I consider a few possibilities :
1. The physical world, as you pointed out. I only have doubts as for the sky. It seems in this conception must by the sky / heaven meaning atmosphere, air, but looking on the two copies of the Vox Clamantis (circa 1400), I think it is a possible variation. 
With air (Glasgow Univ. Lib., MS Hunter 59 (T.2.17) folio 6v):

With starry night sky (source is Hunting Library HM150 folio: f. 13v (aka Ecton-Sotheby manuscript, Macaulay E-text):

2. The part of the Biblical creation myth.
Genesis 1:6-7
6 And God said, “Let there be a vault between the waters to separate water from water.” 7 So God made the vault and separated the water under the vault from the water above it. And it was so.
Also:
Job 9:8
He alone stretches out the heavens _ and treads on the waves of the sea.
Or Job 26:7-12
7He spreads out the northern [skies] over empty space; he suspends the earth over nothing.8He wraps up the waters in his clouds, yet the clouds do not burst under their weight.9He covers the face of the full moon, spreading his clouds over it.10He marks out the horizon on the face of the waters for a boundary between light and darkness.11The pillars of the heavens quake, aghast at his rebuke.12By his power he churned up the sea; by his wisdom he cut Rahab to pieces.
The spiral shaped text reminds me of the circular motion of the stars around the north pole (the God's Kingdom), therefore I think of this rosette not only as about the Creature, but also as the North. 
3. The Flood myth with the castle-like ark. 
I'm really not ready to prefer any of these suppositions. All of them seems to be possible, but, of course, it needs a separate thread for interpretations of every rosette.