- 作者: 黃武良
- 作者服務機構: 國立臺灣大學地質學系
- 中文摘要: 新裝設四萬大氣壓活塞-鋼圈高壓高溫儀,以四個固態反應:(1)石英→←斜矽石,(2)納長石→←硬玉+石英,(3)方解石→←霰石,(4)矽線石→←藍晶石,做?詳細之壓力校正。各反應之已知轉化壓力,分別做?不同壓力範圍之校正標準。結果發現所需 之校正值,隨總壓力的改變有相當之差異。此儀器之校正?以此?準。 鈉長石在攝氏四百至七百度間之分解壓力以實驗測定出。經過壓力校正後,溫度五百度以上之結果,同前人之實驗測定值十分一致。此表示該儀經過校正後之壓力十分精確。本?究並提供該反應在溫度五百度以下分解壓力的新資料。?克服該反應在五百 度以下的過慢反應速率,本?究嘗試新的實驗方法,並討論其結果及可行性。
- 英文摘要: A newly installed piston-cylinder high pressure apparatus was calibrated for pressures and temperatures against four subsolidus reactions: quartz→←coesite, albite→←jadeite+quartz, calcite→← aragonite and sillimanite→←kyanite, which were used as calibrants at different pressures. The results showed that the required pressure correction for the apparatus varied considerably with run pressures. The albite-breakdown reaction was experimentally determined at temperatures between 700°C and 400°C After pressure correction the results were in good agreement with previously reported results at temperature above 500°C The present study also provides new data for the reaction at temperature below 500°C The agreement of results suggested an internal consistency of the pressure of the apparatus. Method designed for detecting the small degree of reaction due to the slow reaction rate at low temperatures have been discussed.
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