CAJ | 학술논문

首次对格罗夫山地区漂砾的暴露年龄进行的研究表明,萨哈罗夫岭冰原岛峰的两块漂砾样品的~(10)Be最小暴露年龄分别为1.24±0.11Ma和1.37±0.12Ma,~(26)Al最小暴露年龄分别为0.90±0.12Ma和0.44±0.04Ma.萨哈罗夫岭附近冰面上的漂砾样品的~(10)Be和~(26)Al最小暴露年龄分别是0.47±0.3Ma和0.44±0.04Ma.考虑到误差,萨哈罗夫岭三块漂砾的最小暴露年龄与相近高程的基岩样品的最小暴露年龄基本一致.因此,在利用原地生成宇宙成因核素测年技术对东南极内陆格罗夫山地区的冰川消涨历史进行研究时,基岩和漂砾暴露年龄所反映出的冰川演化历史是明显吻合的.
수차대격라부산지구표력적폭로년령진행적연구표명,살합라부령빙원도봉적량괴표력양품적~(10)Be최소폭로년령분별위1.24±0.11Ma화1.37±0.12Ma,~(26)Al최소폭로년령분별위0.90±0.12Ma화0.44±0.04Ma.살합라부령부근빙면상적표력양품적~(10)Be화~(26)Al최소폭로년령분별시0.47±0.3Ma화0.44±0.04Ma.고필도오차,살합라부령삼괴표력적최소폭로년령여상근고정적기암양품적최소폭로년령기본일치.인차,재이용원지생성우주성인핵소측년기술대동남겁내륙격라부산지구적빙천소창역사진행연구시,기암화표력폭로년령소반영출적빙천연화역사시명현문합적.
The first study of erratic boulder exposure ages in the Grove Mountains, East Antarctica, indicates the two erratic boulders (sample 060131-1 and 060131-2, collected from a typical nunataks, Zakharoff Ridge in the Grove Mountains) have ~(10)Be minimum exposure ages of 1.24 ±0. 11Ma, 1.37±0.12 Ma, and ~(26)Al ages of 0.90±0.12 Ma,0.44±0.04 Ma, respectively. Meanwhile, another erratic boulder (sample 060131-4), coming from vicinal ice surface, has ~(10)Be and ~(26)Al minimum exposure ages of 0.47±0.3 Ma and 0.44±0.04 Ma, respectively. The exposure ages of the three erratic boulders are nearly similar to the bedrocks with the similar elevation. Thus, using the technique of in situ produced terrestrial cosmogenic nuclides, the ice sheet evolution history in the Grove Mountains reflected by erratic boulder and bedrock exposure ages are basically consistent.