Investigation of Intrusive Rocks in the Çambaşı Plateau and Bektaşyayla Region Located South of Ordu Using 40Ar/39Ar Petrology and Geothermochronology Methods
Bibliographic record
Abstract
This research focuses on elucidating the tectonic processes in the Eastern Pontides by investigating the Çambaşı Quartz Syenite and Bektaş Yaylası Quartz Monzonite, situated south of Ordu province in northeastern Turkey. To achieve this, mineralogical and petrographic characteristics of the acidic granitoids were analyzed alongside 40Ar/39Ar biotite age dating and comprehensive whole-rock and mineral geochemical analyses. Samples collected from Bektaş Yaylası Quartz Monzodiorite and Çambaşı Quartz Syenite underwent crushing, grinding, sieving, and washing to prepare for age determination. The biotite minerals were embedded in epoxy, polished, and examined. After processing the rock sample, geochemical analyses, including trace and rare earth element studies, were carried out at Actlabs laboratory in Canada. The ⁴⁰Ar/³⁹Ar biotite dating yielded ages ranging from 44.50 ± 0.35 million years to 81.12 ± 0.25 million years, indicating that these intrusions formed during the Late Cretaceous and Late Paleocene periods. Geochemical data classify the acidic intrusive rocks as calc-alkaline, high-potassium calc-alkaline, and shoshonitic. Integrating geochronological and geochemical evidence, the study suggests that the Çambaşı Quartz Syenite and Bektaş Yaylası Quartz Monzonite originated from the partial melting of the mafic lower crust, driven by continental collision. These results highlight the crucial role of continental collision in the geodynamic evolution of the Eastern Pontides.. This study on the geochronology and geochemistry of the Çambaşı Quartz Syenite and Bektaş Yaylası Quartz Monzonite offers valuable insights into the tectonic processes of the Eastern Pontides. The results demonstrate that the region’s geodynamic evolution is characterized by a complex and multi-phase history.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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) | 0.001 | 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".