Deciphering high-pressure metamorphism in collisional context using microprobe mapping methods: Application to the Stak eclogitic massif (northwest Himalaya)
Bibliographic record
Abstract
Research Article| February 01, 2013 Deciphering high-pressure metamorphism in collisional context using microprobe mapping methods: Application to the Stak eclogitic massif (northwest Himalaya) Pierre Lanari; Pierre Lanari 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Search for other works by this author on: GSW Google Scholar Nicolas Riel; Nicolas Riel 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Search for other works by this author on: GSW Google Scholar Stéphane Guillot; Stéphane Guillot 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Search for other works by this author on: GSW Google Scholar Olivier Vidal; Olivier Vidal 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Search for other works by this author on: GSW Google Scholar Stéphane Schwartz; Stéphane Schwartz 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Search for other works by this author on: GSW Google Scholar Arnaud Pêcher; Arnaud Pêcher 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Search for other works by this author on: GSW Google Scholar Keiko H. Hattori Keiko H. Hattori 2Department of Earth Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information Pierre Lanari 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Nicolas Riel 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Stéphane Guillot 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Olivier Vidal 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Stéphane Schwartz 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Arnaud Pêcher 1ISTerre, University of Grenoble 1, CNRS, 1381 rue de la Piscine, 38041 Grenoble, France Keiko H. Hattori 2Department of Earth Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada Publisher: Geological Society of America Received: 13 Apr 2012 Revision Received: 04 Jul 2012 Accepted: 22 Jul 2012 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2013 Geological Society of America Geology (2013) 41 (2): 111–114. https://doi.org/10.1130/G33523.1 Article history Received: 13 Apr 2012 Revision Received: 04 Jul 2012 Accepted: 22 Jul 2012 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Pierre Lanari, Nicolas Riel, Stéphane Guillot, Olivier Vidal, Stéphane Schwartz, Arnaud Pêcher, Keiko H. Hattori; Deciphering high-pressure metamorphism in collisional context using microprobe mapping methods: Application to the Stak eclogitic massif (northwest Himalaya). Geology 2013;; 41 (2): 111–114. doi: https://doi.org/10.1130/G33523.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Stak massif, northern Pakistan, is a newly recognized occurrence of eclogite formed by the subduction of the northern margin of the Indian continent in the northwest Himalaya. Although this unit was extensively retrogressed during the Himalayan collision, records of the high-pressure (HP) event as well as a continuous pressure-temperature (P-T) path were assessed from a single thin section using a new multiequilibrium method. This method uses microprobe X-ray compositional maps of garnet and omphacitic pyroxene followed by calculations of ∼200,000 P-T estimates using appropriate thermobarometers. The Stak eclogite underwent prograde metamorphism, increasing from 650 °C and 2.4 GPa to the peak conditions of 750 °C and 2.5 GPa, then retrogressed to 700–650 °C and 1.6–0.9 GPa under amphibolite-facies conditions. The estimated peak metamorphic conditions and P-T path are similar to those of the Kaghan and Tso Morari high- to ultrahigh-pressure (HP-UHP) massifs. We propose that these three massifs define a large HP to UHP province in the northwest Himalaya, comparable to the Dabie-Sulu province in China and the Western Gneiss Region in Norway. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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".