Contrasting Styles of Salt-Tectonic Processes in the Ionian Zone (NW Greece and S Albania)
Bibliographic record
Abstract
Key points • The Ionian Zone in Greece and Albania is studied with surface geology, well information, and the interpretation of new seismic profiles • Triassic salt pillows, isolated thick diapirs, and elongated salt walls condition the style of this Alpine fold and thrust belt • Salt tectonics provides new clues about Alpine orogenic evolution, opening new opportunities for geologic storage in the region Abstract The Ionian Zone (IZ) is one of the key elements of the external zones of the Albanian Hellenides orogen and contains large outcrops of Triassic evaporites.The IZ consists of various thrust sheets with a general westward vergence, stacking over the Apulian and Pre-Apulian zones, and repeating a thick carbonate sequence of Late Triassic or Early Jurassic to Eocene age.Thrusting becomes younger toward the west with a piggyback sequence, starting during the latest Oligocene Epoch in the internal Ionian and ending in the Pliocene in the external Ionian.We have studied the IZ in southern Albania and northwestern Greece using field observations and borehole data and by fully interpreting a recently acquired 2D seismic data set.Our objectives are to establish the geometry and nature of the contacts associated with the major Triassic outcrops, to unravel precursor salt diapirs, and to assess their role during the Alpine contraction.Salt structures include gentle salt pillows, isolated salt plugs and diapirs, thrust welds, and salt walls.We show how these structures control the geometry and kinematics of the Alpine thrusts or the location of recent strike-slip faults.Salt minibasins have also been identified, demonstrating salt mobility conditioned Mesozoic sedimentation in the Ionian Basin.The use of salt-tectonics principles to evaluate the structural style and evolution of the IZ fold and thrust belt also opens new directions for interpreting the subsurface and could help to better define structures that can be used as opportunities for geologic storage in the region.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".