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https://hdl.handle.net/123456789/1863| Τύπος: | Άρθρο σε επιστημονικό περιοδικό |
| Τίτλος: | Jadeite and related species in shocked meteorites: limitations on inference of shock conditions |
| Συγγραφέας: | [EL] Μπαζιώτης, Ιωάννης[EN] Baziotis, Ioannis [EL] Ξυδούς, Σταμάτιος[EN] Xydous, Stamatios [EL] Παπουτσά, Αγγελική[EN] Papoutsa, Angeliki [EN] Hu, Jinping [EN] Ma, Chi [EN] Klemme, Stephan [EN] Berndt, Jasper [FR] Ferrière, Ludovic [EN] Caracas, Razvan [EN] Asimow, Paul |
| Ημερομηνία: | 29/09/2022 |
| Περίληψη: | Jadeite is frequently reported in shocked meteorites, displaying a variety of textures and grain sizes that suggest formation by either solid-state transformation or by crystallization from a melt. Sometimes, jadeite has been identified solely on the basis of Raman spectra. Here we argue that additional characterization is needed to confidently identify jadeite and distinguish it from related species. Based on chemical and spectral analysis of three new occurrences, complemented by first-principles calculations, we show that related pyroxenes in the chemical space (Na)M2(Al)M1(Si2)TO6–(Ca)M2(Al)M1(AlSi) TO6–(⎕)M2(Si)M1(Si2)TO6 with up to 2.25 atoms Si per formula unit have spectral features similar to jadeite. However, their distinct stability fields (if any) and synthesis pathways, considered together with textural constraints, have different implications for precursor phases and estimates of impactor size, encounter velocity, and crater diameter. A reassessment of reported jadeite occurrences casts a new light on many previous conclusions about the shock histories preserved in particular meteorites. |
| Γλώσσα: | Αγγλικά |
| Σελίδες: | 10 |
| DOI: | 10.2138/am-2022-8220 |
| ISSN: | 0003-004X |
| Θεματική κατηγορία: | [EL] Γεωεπιστήμες, άλλοι τομείς[EN] Geosciences, miscellaneous |
| Λέξεις-κλειδιά: | High-pressure polymorphs; spectroscopy; planetary; pyroxenes; chondrites |
| Κάτοχος πνευματικών δικαιωμάτων: | © 2022 Mineralogical Society of America |
| Όροι και προϋποθέσεις δικαιωμάτων: | The Mineralogical Society of America (MSA) owns the copyright on all material published in American Mineralogist, Reviews in Mineralogy, Reviews in Mineralogy and Geochemistry, The Lattice, Geological Materials Research, MSA Website, MSA Special Papers, indexes, and Elements. Works prepared by U.S. government employees in the course of their work is in the public domain and are not copyrighted by MSA. MSA obtains copyright ownership from authors as a professional service. MSA's holding the copyright centralizes the process and allows permission to be given even if the author(s) can no longer be located. This also prevents materials from becoming unusable by the community because of uncertainty about who holds the copyright. Anyone wanting to reproduce articles, figures, tables, etc. need only fill out this form for permission to do so. There is no charge for reproducing materials in most cases. |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://www.degruyter.com/document/doi/10.2138/am-2022-8220/html |
| Ηλεκτρονική διεύθυνση περιοδικού: | https://www.degruyter.com/journal/key/ammin/html |
| Τίτλος πηγής δημοσίευσης: | American Mineralogist |
| Τεύχος: | 107 |
| Τόμος: | 10 |
| Σελίδες τεκμηρίου (στην πηγή): | 1868-1877 |
| Σημειώσεις: | Ioannis Baziotis, Stamatios Xydous, and Angeliki Papoutsa received support for this research from ESF and the Greek State (call code EDBM103). Ioannis Baziotis thanks SYNTHESYS project AT-TAF-30 (www.synthesys.info; a European Union funded Integrated Activities grant), which provided travel, accommodation, and instrument costs while using SEM and EPMA instruments at NHMV. Stamatios Xydous greatly thanks the Barringer Family Fund for Meteorite Impact Research for its support. Analyses at Caltech were funded by NASA award 80NSSC18K0532. Razvan Caracas acknowledges support from the European Research Council under EU Horizon 2020 research and innovation program (grant agreement 681818–IMPACT), the Research Council of Norway, project number 223272, and access to supercomputing facilities via eDARI stl2816 grants, PRACE RA4947 grant, and Uninet2 NN9697K grant. |
| Εμφανίζεται στις συλλογές: | Ερευνητικές ομάδες |
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| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
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| Baziotis et al. 2022 AmMin.pdf Until 2025-09-01 | 10 σελίδες | 2.55 MB | Adobe PDF | Δημοσιευμένη/του Εκδότη |  | Δείτε/ανοίξτε |