地质通报2016，Vol.35Issue(10)：1600-1606,7.
渤海湾西岸QX02孔Ⅱ海的识别及OSL年龄
Identification and OSL ages of the Second Marine Bed in Bore-hole QX02 along the western coast of Bohai Bay
摘要
Abstract
Alternation of marine and terrestrial sediments from Core QX02 along the western coast of Bohai Bay was recognized us⁃ing lithological characteristics and quantity of benthic foraminifera analysis. Timing of the second marine bed, 11.4m thick, corre⁃sponding to a relative sea level of-26.83~-15.43m, was determined by both AMS 14C and OSL dating methods. The AMS 14C dates demonstrated that the second marine bed was deposited during the early Marine Isotope Stage 3 and even earlier. De distribution of typical sediments from the second marine bed was over-dispersed, and two distinct populations could be observed, which yielded a young age range of 51.9~39.9ka, and an old age range of 83.5~62.6ka, respectively. According to the principle of OSL dating, the old fraction obtained from De distribution was limited by the poorly bleaching and, in turn, the fraction of relative young ages was com⁃monly adopted. However, it is plausible to have a clue from the cluster of the older ages that there would be an original sedimentary process and a corresponding timing of marine transgression.关键词
OSL测年/第Ⅱ海相层/渤海湾西岸Key words
OSL dating/the Second Marine Bed/western coast of Bohai Bay分类
海洋科学引用本文复制引用
陈永胜,王福,姜兴钰,黎伟麒,李建芬,商志文..渤海湾西岸QX02孔Ⅱ海的识别及OSL年龄[J].地质通报,2016,35(10):1600-1606,7.基金项目
国家自然科学基金项目（批准号41476074）和中国地质调查局项目 （）
