East Tauern Detachment System: Coupled Oligocene Ductile Thinning and Miocene Extension of the Eastern European Alps
Bibliographic record
Abstract
Abstract Differentiating between syn‐ and post‐orogenic structures is critical for determining the contribution from any one mechanism toward net exhumation. In the Tauern Window of the Eastern Alps, new mapping in its northeastern region reveals significant deformation associated with W–E extension and a component of N–S shortening. Kinematic indicators reveal a clear top‐to‐E shear sense, and deformation is further highlighted by progressively deformed quartz‐calcite‐dolomite veins, whose rotation was used to quantify flow parameters, revealing an equal contribution of simple and pure shear. The ductile deformation is overprinted by E‐dipping shear bands and faults, which transition into brittle‐ductile faults compatible with incremental strain axes indicating vertical shortening during top‐to‐E extension. Raman spectroscopy data show a temperature gradient with higher structural levels exhibiting paleotemperatures <450°C, increasing to >500°C at deeper levels. White mica 40 Ar/ 39 Ar ages (25–34 Ma) in both shear veins and recrystallized fabrics confirm Oligocene deformation. At higher crustal levels, the deformation gradient progressively increases toward the newly discovered top‐to‐E Schuhflicker Detachment, defined by a knife‐sharp fault surface of ultramylonites and cataclasites. The Schuhflicker Detachment developed at mid‐crustal levels during the Oligocene, and during progressive exhumation, W–E extension was transferred to the structurally higher Katschberg Fault and Katschberg Shear Zone System during the Miocene. Collectively, these structures form the East Tauern Detachment System, which accommodated tens of kilometers of exhumation of the Tauern Window, facilitating the incipient stages of its exhumation during the Oligocene and subsequent erosion‐dominated unroofing in the Miocene.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".