Last updated: Version 7.3b (June 10, 2026)
Scientific analysis based on the primary source: Mildner, S. (2026). Geodynamic Reinterpretation Model for Ptolemy’s Germania Magna: General Model Description, Cartometric Foundations, (v7.1). EarthArXiv (Preprint). https://doi.org/10.31223/X5KB51
(📥 Download NEW-v9.0-PDF) (mathematical model description)
Builds upon: Mildner, S. (2025/2026). A new interpretation of Ptolemy's Germania Magna: Employing computer-assisted image distortion of a medieval map by Donnus Nicolaus Germanus to examine post-glacial geodynamics in Europe. EarthArXiv. https://doi.org/10.31223/X5313T
(📥 Download v5.0-PDF) (descriptive main publication)
The historical geography of Germania Magna remains one of the most challenging fields in classical studies and geodetic research. The currently paradigmatically influential reference model — the statistical-geodetic rectification of the TU Berlin group (Karlsen et al., 2011) — explains deviations between Ptolemaic coordinates and modern topography primarily as measurement errors of ancient instruments or as transmission artefacts.
The present model is based on a fundamentally opposing assumption. The primary explanatory principle is the recognition that the northern reference coastline of the Oceanus Germanicus lay approximately 120 km further south in antiquity. Medieval cartographers projected Ptolemy's coordinates onto a landscape already altered by major 6th-century geodynamic processes. This produced a systematic northward stretching of the map image and a corresponding eastward displacement of eastern coordinates.
The cartometric foundation — a strictly affine transformation anchored on the invariant Rhine–Elbe baseline with a global scaling factor of per Ptolemaic degree of longitude — remains unchanged. Version 7 updates the core statistical result to an extended Elster Cluster of , , , .
► Principal revisions in Version 7 relative to v6 (click to expand)
| # | New feature | Affected sections |
|---|
| 1 | Extended Elster Cluster (, , ): Leukaristos (Finsterwalde, ), Arsonion (Senftenberg zone, , décollement tip), Carrodunum (Spreetal/Nochten, ) | §4, §5 |
| 2 | Coulomb-wedge gradient model: Arsonion cartometrically localises the Zechstein abscherfront – west of the Lausitz Granodiorite contact | §4.3, §5.2 |
| 3 | Revised trigger budget: Africa/CDF 40 % → 10 %; SU 20 % → 50 %; CK 25 % → 35 %; Bramsche 15 % → 5 % | §10 |
| 4 | Unified Abnobae Mons (new Part V): Taunus, Odenwald, Spessart, Rhön, and pre-Vogelsberg basement as a coherent pre-deformation crustal block; modern fragmentation as post-531 AD result | §8 |
| 5 | Universal Waltershausen pivot: same point (E/N)(initially determined approximately) for the dextral Sudete rotation (+35° CW) and the sinistral southern Abnobae rotation ( CCW) — geometry of a positive flower structure, SW of W-P | §8.2 |
| 6 | Vistula proportional cross-check (§9): Ptolemaic Harz–Vistula ratio predicts ; Oder mouth ✅; Weichsel mouth ❌ | §9 |
| 7 | F2 revision: Vistula western source from Königsbrück/Pulsnitz (according Donnus Nicolaus Germanus) → Ottendorf-Okrilla (Senftenberger Elbelauf, according to Mercator map analysis; to understand as a second Vistula source definition); | §3.2 |
| 8 | Doberlug-Kirchhain pressure-cooker mechanism: Andersonian fault-dip prediction () matches observed 40°–60° dip range exactly | §5.4 |
| 9 | Coal corridor SU ↔ CK: Doberlug-Kirchhain, Döhlen/Freital, Lugau-Oelsnitz as a spatially coherent shock-coalification corridor | §5.4 |
| 10 | Seven simultaneous constraints (up from five in v5/v6): universal-pivot consistency as seventh condition | §11.1 |
| 11 | Vogelsberg as crustal transfer node and pull-apart filling [new section]: conjugate transtensional shear geometry, Coulomb-wedge mechanics, triple-point kinematics | §7 |
| 12 | 34 falsification tests (T1–T34; T12–T34 new in v7) | §12 |
Disclaimer
This article presents an interdisciplinary working hypothesis integrating cartometry, geodynamics, sedimentology, and historical sources. It proposes a geodynamic and climatic rupture in the 6th century AD and formulates concrete, falsifiable predictions. The model challenges aspects of the current mainstream interpretation and is intended to stimulate further empirical testing. It does not claim to be a definitive reconstruction. The Saale-Unstrut Fragment Impact, the postulated third event at Vogelsberg/Frankfurt, and the unified Abnobae block identification remain hypotheses not confirmed by current peer-reviewed literature. The model has not been evaluated by peer review.
