Net-Transfer Reactions and Modal Spaces For Ultramafic Slivers, Vermont Appalachians, USA
Bibliographic record
Abstract
Research Article| September 01, 2018 Net-Transfer Reactions and Modal Spaces For Ultramafic Slivers, Vermont Appalachians, USA Ian W. Honsberger; Ian W. Honsberger § Department of Earth Sciences, University of New Hampshire, Durham, New Hampshire 03824, USAGeological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada § Corresponding author e-mail address: ian.honsberger@canada.ca Search for other works by this author on: GSW Google Scholar Jo Laird Jo Laird Department of Earth Sciences, University of New Hampshire, Durham, New Hampshire 03824, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Ian W. Honsberger § Department of Earth Sciences, University of New Hampshire, Durham, New Hampshire 03824, USAGeological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Jo Laird Department of Earth Sciences, University of New Hampshire, Durham, New Hampshire 03824, USA § Corresponding author e-mail address: ian.honsberger@canada.ca Publisher: Mineralogical Association of Canada First Online: 25 Oct 2018 Online Issn: 1499-1276 Print Issn: 0008-4476 © 2018 Mineralogical Association of Canada The Canadian Mineralogist (2018) 56 (5): 821–846. https://doi.org/10.3749/canmin.1700071 Article history First Online: 25 Oct 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Ian W. Honsberger, Jo Laird; Net-Transfer Reactions and Modal Spaces For Ultramafic Slivers, Vermont Appalachians, USA. The Canadian Mineralogist 2018;; 56 (5): 821–846. doi: https://doi.org/10.3749/canmin.1700071 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 SocietyThe Canadian Mineralogist Search Advanced Search Abstract Serpentinized ultramafic slivers associated with mafic subduction zone rocks in the hinterland of central Vermont preserve talc-carbonate, chlorite-tremolite, and chlorite-talc zones that formed via a series of H2O- and CO2-bearing net-transfer reactions. Reactions took place within both MgO–SiO2–H2O–CO2 (MSHC) and CaO–MgO–Al2O3–SiO2–H2O–CO2 (CMASHC), with MSHC reactions preceding CMASHC reactions. Three linearly independent basis net-transfer reactions were derived for each system. Each set of basis reactions includes one closed system reaction, one reaction open to H2O, and one reaction open to CO2. The basis reactions derived for MSHC are: 9Enstatite + Serpentine = 3Forsterite + 2Talc; 6Enstatite + 3H2O = Talc + Serpentine; 6Enstatite + Serpentine + 3CO2 = 3Magnesite + 2Talc. The basis reactions derived for CMASHC are: 2Serpentine + VIAl IVAlMg–1Si–1 (TK) = Chlorite; 2Serpentine + 5Talc + 6CaMg–1 (CM) = 3Tremolite + 6H2O; 7Talc + 3Dolomite + 3CM = 3Tremolite + 2Serpentine + 6CO2. Modal spaces show that carbonatization of serpentinite occurred in MSHC after serpentinization of peridotite, and that MSHC evolved into CMASHC due to metasomatic addition of Al3+ and Ca2+ during serpentinite carbonatization. The reaction pathway interpreted for CMASHC is dependent primarily on carbonatization and decarbonatization reactions, with chlorite-tremolite and chlorite-talc zones forming via decarbonatization and talc-carbonate zones forming via carbonatization of serpentinite. The modal spaces herein can be utilized for any ultramafic body with comparable zonation. Applying these spaces to ultramafic rocks at Belvidere Mountain in northern Vermont suggests that the mineralogical diversity seen there may result from multiple independent reaction paths within MSHC, NCMASH, CMASH, and CMASHC. 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 | 0.002 | 0.004 |
| Science and technology studies | 0.004 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.025 | 0.002 |
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".