礦物流體包裹體教學(xué)課件-全文預(yù)覽
【正文】 ven this limited information can be valuable, The measured pressures range from near atmospheric to many kilobars. （ 3）密度 Density If the position and density of each of the phases now present in a fluid inclusion (., liquid, gas, or crystals) can be determined, along with their individual volumes, the total average density of the material in the inclusion can be calculated. Such densities are important in understanding the past circulation of fluids in the earth39。s Republic of China。 such work was used very strong evidence to support the Neptunist theory of the formation of minerals and rocks from water. （ 2）研究歷史 2） 包裹體測溫理論的建立 In the following 155 years, a large number of invetigations of fluid inclusions was made, for a variety of reasons. Many invetigations were aimed at using or disproving the thesis proposed by Sorby (1858) that the gas bubbles present in the fluid of most inclusions are the result differential shrinkage of the liquid and the enclosing mineral during cooling from the higher temperature of trapping (Tt) to the temperature of observation[2]. （ 2）研究歷史 2） 包裹體測溫理論的建立 （ 續(xù) ） Sorby showed that the coefficients of expansion on heating (and, conversely, the coefficients of contraction on cooling) for a variety of liquid solutions resembling the fluids in inclusions were one or two orders of magnitude greater than the coefficients for the enclosing or host minerals. Hence, he reasoned that the temperature of trapping can be estimted by heating the sample to the point at which the bubbles disappear, ., the temperature of homogenization(Th). （ 2）研究歷史 —Sorby (1858)的測溫理論 T P L G S （ 2）研究歷史 3） 近代包裹體研究的發(fā)展 Inclusions were a subject of intense study and debate by many geologists during Sorby?s time (索爾比時(shí)代 ), and some of the conclusions from their study were so disturbing to certain schools of geologic thought that many efforts were made to discredit them. Phillips (1875） pointed out that there are large variations in the position and nature of different inclusions in the same sample and that Sorby had obviously oversimplified the problem. One of the most serious questions challenging the validity of fluidinclusion evidence was that concerning leakage. （ 2）研究歷史 3） 近代包裹體研究的發(fā)展 Skinner （ 1953) and several other workers in that period published evidence that under certain conditions, inclusions do leak. Fifteen years later, he recanted (Roedder and Skinner, 1968), but even today, some are reluctant to accept inclusion data for two reasons: (1) proof of secondary origin of many inclusions。 流體包裹體（ Fluid Inclusions)， 礦物包裹體 阿爾泰薩熱闊布金礦 脈石英中富 CO2包裹體 1 礦物中的包裹體及研究歷史 （ 2） 研究歷史 1） 萌芽 Other than brief mention in some of the ancient literature, the first specific description of inclusions is by Abu Reykhan alBiruni, a centralAsian scholar of the 11th century (Lemmlein, 1950). Robert Boyle39。 參 考 書 目 ★ 何知禮， 1982，包體礦物學(xué)，地質(zhì)出版社 ★ Roedder, 1984, Fluid Inclusions, Mineralogy Society (有中譯本） ★ Shepherd, Rankin, amp。流體包裹體 FLUID INCLUSIONS 流體包裹體 FLUID INCLUSIONS 教學(xué)大綱 1. 緒論 2學(xué)時(shí) 礦物中的包裹體 包體礦物學(xué)研究領(lǐng)域、研究現(xiàn)狀與展望
環(huán)評公示相關(guān)推薦
鄂ICP備17016276號-1