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在南海北部陆坡和陆架柱状样HY4-901及ZD48-5B的大量样品中,作者基于涂片、粘土矿物、CaCO_3、δ~(13)C、δ~(18)O、孢粉、有孔虫、放射虫、硅藻的分析测试,对地层层序、沉积特征、微体古生物特征进行了研究总结: ·根据岩石地层、生物地层、稳定同位素地层的研究,建立了全新统的地层层序,并命名为一统组。·氧稳定同位素的详细研究表明,全新世以来的气温波动可以明显地分出8-9个周期,每个周期的时间大约1000-1200 a。·本区全新世以来的气候变化可以分为4期:①迅速升温期;②高温期;③气温波动期;④温凉期。·未来气候变化的总趋势是变冷的,但在短期可能变暖,其幅度不会太大。
In a large number of samples from the continental shelf and columnar samples HY4-901 and ZD48-5B in the northern South China Sea, the authors used smectite, clay minerals, CaCO 3, δ 13 C, δ 18 O, , Radiolarian and diatom, and summarized the stratigraphic sequence, sedimentary characteristics and microfacies paleontology characteristics. Based on the study of lithostratigraphic, biogenic and stable isotope strata, the stratigraphic sequence of the Holocene was established. And named as a unified group. Detailed studies of oxygen-stable isotopes show that the temperature fluctuations since the Holocene can be clearly divided into 8-9 cycles of about 1000-1200 a per cycle. The Holocene climate change in this area can be divided into four periods: ① rapid warming; ② high temperature period; ③ temperature fluctuations; ④ cool period. · The general trend of climate change in the future is to be chilled, but in the short term it may not be much warmer.