1991年12月
DEHYDRATION OF BRUCITE (MG(OH)2) AT HIGH-PRESSURES DETECTED BY DIFFERENTIAL THERMAL-ANALYSIS
GEOPHYSICAL RESEARCH LETTERS
- 巻
- 18
- 号
- 12
- 開始ページ
- 2189
- 終了ページ
- 2192
- 記述言語
- 英語
- 掲載種別
- 出版者・発行元
- AMER GEOPHYSICAL UNION
The differential thermal analysis (DTA) technique has been applied in a multi-anvil high-pressure apparatus to study the dehydration reaction of brucite (Mg(OH)2) to periclase (MgO) plus H2O at 4 to 6 GPa. At 4 GPa and 1030-degrees-C, endothermic and exothermic peaks due to dehydration and rehydration were observed during heating and cooling cycles, respectively. These peaks were shifted to higher temperature with increasing pressure (1080-degrees-C at 5 GPa; 1120-degrees-C at 6 GPa), suggesting that the reaction has a positive dT/dP slope within this pressure range. The stability of brucite under deep mantle condition is discussed.
- リンク情報
- ID情報
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- ISSN : 0094-8276
- Web of Science ID : WOS:A1991GY09300004