Oxygen isotope studies of the Suzhou granite have been made based on drill-hole samples. In the inner part, the δ18O values are less variable either in the whoe-rock, quartz or in feldspar. Oxygen isotopic compositio...Oxygen isotope studies of the Suzhou granite have been made based on drill-hole samples. In the inner part, the δ18O values are less variable either in the whoe-rock, quartz or in feldspar. Oxygen isotopic compositions are in equilibrium between coexisting quartz and feldspar. Data points from the inner part are plotted in a small area in the δ18OQ-δ18Of dia-gram, indicating that this part has not been affected by meteoric hydrothermal fluids. But the whole-rock δ18O values of the margnal part vary greatly. Oxygen isotopic compesitions are in extreme disequilibrium between quartz and feldspar. Data points from the maminal part are displayed with a nearly vertical slope in the δ18Q-δ18Of diagram, implying that rocks of this part are affected by the meteoric hydrothermal fluids. Extreme waterrock interactions lead to mineralizations of rare-elements (Nb, Ta, as well as Zr, Hf, Th) in the margnal part. Source materials of the Suzhou granite are also discussed in this paper.展开更多
A series of Co-Ag granular films were deposited onto a glass substrate with a thickness on the order of 400nm using the ion-beam cosputtering technique.Granular films ranging in composition from about 0-100%fraction b...A series of Co-Ag granular films were deposited onto a glass substrate with a thickness on the order of 400nm using the ion-beam cosputtering technique.Granular films ranging in composition from about 0-100%fraction by volume of cobalt have been prepared.Polar Kerr rotation spectra of the films were measured at room temperature in the wavelength region between 400 and 850nm.A maximum Kerr rotation angle(θk)of 0.28ºwas obtained when a magnetic field of 10kOe was applied perpendicular to the film plane.Our results indicate that the Co particle density and the microstructure between the Co particles and Ag matrix may play an important role in the Kerr rotation.展开更多
文摘Oxygen isotope studies of the Suzhou granite have been made based on drill-hole samples. In the inner part, the δ18O values are less variable either in the whoe-rock, quartz or in feldspar. Oxygen isotopic compositions are in equilibrium between coexisting quartz and feldspar. Data points from the inner part are plotted in a small area in the δ18OQ-δ18Of dia-gram, indicating that this part has not been affected by meteoric hydrothermal fluids. But the whole-rock δ18O values of the margnal part vary greatly. Oxygen isotopic compesitions are in extreme disequilibrium between quartz and feldspar. Data points from the maminal part are displayed with a nearly vertical slope in the δ18Q-δ18Of diagram, implying that rocks of this part are affected by the meteoric hydrothermal fluids. Extreme waterrock interactions lead to mineralizations of rare-elements (Nb, Ta, as well as Zr, Hf, Th) in the margnal part. Source materials of the Suzhou granite are also discussed in this paper.
基金Supported by the Climbing Program(85-6 NMS)from National Commission of Science and Technology of China under Grant No.920232003the National Natural Science Foundation of China under Grant No.59671021。
文摘A series of Co-Ag granular films were deposited onto a glass substrate with a thickness on the order of 400nm using the ion-beam cosputtering technique.Granular films ranging in composition from about 0-100%fraction by volume of cobalt have been prepared.Polar Kerr rotation spectra of the films were measured at room temperature in the wavelength region between 400 and 850nm.A maximum Kerr rotation angle(θk)of 0.28ºwas obtained when a magnetic field of 10kOe was applied perpendicular to the film plane.Our results indicate that the Co particle density and the microstructure between the Co particles and Ag matrix may play an important role in the Kerr rotation.
