Experimental measurements of the viscosity and melt structure of alkali basalts at high pressure and temperature

被引：6

作者：

Bonechi, Barbara ^{[1
]}

Stagno, Vincenzo ^{[1
,2
]}

Kono, Yoshio ^{[3
]}

Hrubiak, Rostislav ^{[4
]}

Ziberna, Luca ^{[5
,6
]}

Andreozzi, Giovanni B. ^{[1
]}

Perinelli, Cristina ^{[1
]}

Gaeta, Mario ^{[1
]}

机构：

[1] Sapienza Univ Roma, Dipartimento Sci Terra, Ple Aldo Moro 5, I-00185 Rome, Italy

[2] Ist Nazl Geofis & Vulcanol, I-00143 Rome, Italy

[3] Ehime Univ, Geodynam Res Ctr, Matsuyama, Ehime 7908577, Japan

[4] Argonne Natl Lab, High Pressure Collaborat Access Team, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA

[5] Univ Trieste, Dipartimento Matemat & Geosci, Via Weiss 8, I-34128 Trieste, Italy

[6] Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany

来源：

SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期

关键词：

ELASTIC-WAVE VELOCITY; MAGMA FEEDING SYSTEM; X-RAY-DIFFRACTION; CAMPI-FLEGREI; SILICATE MELTS; MANTLE SOURCE; PHLEGREAN FIELDS; CAMPANIA REGION; KILAUEA VOLCANO; GEOCHEMISTRY;

D O I：

10.1038/s41598-022-06551-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Volcanic eruptions are shallow phenomena that represent the final stage of density- and viscosity- driven processes of melt migration from source rocks at upper mantle depths. In this experimental study, we investigated the effect of pressure (0.7-7.0 GPa) and temperature (1335-2000 degrees C) on the viscosity and the atomic melt structure of a synthetic anhydrous primitive alkaline basalt, an analogue of the pre-eruptive magma that likely feeds the Campi Flegrei Volcanic District at present day. Obtained viscosities (0.5-3.0 Pa s), mobility (0.1-0.4 g cm(3) Pa-1 s(-1)) and ascent velocity (1.5-6.0 m yr(-1)) are presented to support geochemical and geophysical observations of Campi Flegrei as a critical volcanic district currently undergoing gradual magma recharge at depth.

引用

页数：12

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