Interpretation of Salt Deposition in Wright Valley, Antarctica: Chemical Analysis of DVDP 14 Core

• Main Authors: Murayama, Haruta, Nakaya, Shyu, Murata, Sadao, Torii, Tetsuya, Watanuki, Kunihiko
• Language: English
• Published: 1979
• Subjects: Wright Valley; Antarc*; Antarctica; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/record/986/files/KJ00000011532.pdf

P(論文) Powder X-ray diffraction analysis, water and perchloric acid extraction and chemical analysis of extracts were carried out on DVDP 14 core to discuss the past environment in the Wright Valley. From the results of X-ray analysis, quartz and feldspar-group were found as primary minerals, with calcite and halite as secondary minerals. In the results of chemical analysis, the composition of the water soluble part was neary equal to that of ground water and the composition of the perchloric acid soluble part was neary equal to that of DVDP 13 core and soil of the Wright Valley. In general, the sodium content was higher in the upper part, while the calcium ion content increaesd with depth, and sulfate ion was negligibly small through the core. The vertical distribution of the water and perchloric acid soluble matter showed several peaks. This suggests some epochs in sedimentation in the area, such as drying up of or filling up with water. departmental bulletin paper