Book
The Viscosity of Carbonate‐Silicate Transitional Melts at Earth's Upper Mantle Pressures and Temperatures, Determined by the In Situ Falling‐Sphere Technique
| العنوان: | The Viscosity of Carbonate‐Silicate Transitional Melts at Earth's Upper Mantle Pressures and Temperatures, Determined by the In Situ Falling‐Sphere Technique |
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| المؤلفون: | Stagno, Vincenzo, Kono, Yoshio, Stopponi, Veronica, Masotta, Matteo, Scarlato, Piergiorgio, Manning, Craig E |
| المساهمون: | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois, USA, Dipartimento di Scienze della Terra, Sapienza Universita’ di Roma, Italy, Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy, Department of Earth, Planetary and Space Sciences, University of California–Los Angeles, Los Angeles, California, USA |
| بيانات النشر: | John Wiley & Sons |
| سنة النشر: | 2020 |
| المجموعة: | Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
| مصطلحات موضوعية: | magma, viscosity, redox, carbonate, 04.01. Earth Interior |
| الوصف: | The circulation of carbon in Earth’s interior occurs through the formation, migration, and ascent of CO2‐ bearing magmas throughout the convective mantle. Their chemical composition spans from carbonatitic to kimberlitic as a result of either temperature and pressure variations or local redox conditions at which partial melting of carbonated mantle mineral assemblages occurs. Previous experiments that focused on melting relations of synthetic CO2‐bearing mantle assemblages revealed the stability of carbonate‐silicate melts, or transitional melts, that have been generally described to mark the chemical evolution from kimberlitic to carbonatitic melts at mantle conditions. The migration of these melts upward will depend on their rheology as a function of pressure and temperature. In this study, we determined the viscosity of carbonate‐silicate liquids (~18 wt% SiO2 and 22.54 wt% CO2) using the falling‐sphere technique combined with in situ synchrotron X‐ray radiography. We performed six successful experiments at pressures between 2.4 and 5.3 GPa and temperature between 1565 °C and 2155 °C. At these conditions, the viscosity of transitional melts is between 0.02 and 0.08 Pa˙s; that is, about one order of magnitude higher than what was determined for synthetic carbonatitic melts at similar P‐T conditions, likely due to the polymerizing effect of the SiO2 component in the melt. ; Published ; 223-236 ; 1T. Struttura della Terra ; 3V. Proprietà chimico-fisiche dei magmi e dei prodotti vulcanici |
| نوع الوثيقة: | book part |
| وصف الملف: | application/pdf |
| اللغة: | English |
| ردمك: | 978-1-119-50826-7 1-119-50826-6 |
| Relation: | Carbon in Earth's Interior; http://hdl.handle.net/2122/14463 |
| الاتاحة: | http://hdl.handle.net/2122/14463 |
| Rights: | CC0 1.0 Universal ; http://creativecommons.org/publicdomain/zero/1.0/ |
| رقم الانضمام: | edsbas.E12AB0D4 |
| قاعدة البيانات: | BASE |
| ردمك: | 9781119508267 1119508266 |
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