摘要
对浙江省桐庐、寿昌中生代火山杂岩石英晶屑及斑晶中单个岩浆包裹体收缩气泡内的挥发组分,借助激光喇曼探针进行分析,定量给出的有CO_2、CH_4、H_2O、N_2、CO、H_2、H_2S、SO_2。 结合岩浆包裹体显微测温、测压和化学成分数据,计算了单个包裹体被捕获时的P_总、f_(O_2)、f_(CO_2)、f_(CH_4)、f_(H_2O)、f_(CO)和f_(H_2)等物理化学参数。并据此讨论了桐庐、寿昌中生代火山岩浆演化中的某些物理化学条体。 研究表明,此类研究已经成为现代岩浆岩石学,特别是现代火山岩石学研究中一个必不可少的新兴领域,它可以帮助我们重溯天然岩浆结晶演化的物理化学历史。
Laser Raman microprobe has been applied to the analysis of volatile components in shrinkage gas bubbles of individual magmatic inclusions in quartz crystal fragments and phenocryst-als from the Mesozoic volcanic complexes of Tonglu and Shouchang, Zhejiang Province. Quantitative analyses are given for CO2,CH4,H2O, CO,H2, N2, H2S, and SO2. In conjunction with the microthermometry and microbarometry data and the chemical compositions of magmatic inclusions, the results permit one to calculate the physico-chemical parameters Ptotal, fo2, fco2,fcH4,fH2O,,fco, and fH2 at the time individual magmatic inclusions were trapped. Based on the data obtained, some physico-chemical conditions for the Mesozoic volcanic magma evolution in the Tonglu and Shouchange areas are discussed.This work shows that this type of studies has become an indispensably new and rising domain in modern magmatic petrology, especially modern volcanic petrology. It can help us to reconstruct the physico-chemistry of the crystallization evolution of a natural magma.
出处
《地球化学》
CAS
CSCD
北大核心
1990年第2期108-116,共9页
Geochimica
基金
国家自然科学基金
