| 摘要: |
| 根据160个钻孔的岩性分析,孢粉和硅藻等的鉴定及野外调查,得出雷州半岛地区第四纪以来更新世时期的滨海相～河流～洪积堆积相～火山口湖堆积相,是一个地壳上升时期。到了全新世时期,地壳发生波动,经历了陆相～海相～陆相的过程,形成了今日的地貌形态。 在雷州半岛地区第四纪以来的环境变迁过程中,距今7,000～8,000a前的全新世中期发生的大海侵,是奠定雷州半岛地貌形态的时期。而引起海平面变化的原因,是全球性气温升高,这和我国东部以及华南沿海地区海平面变化规律相一致。 |
| 关键词: 环境演变 沉积环境 孢粉组合 地层 钻孔岩性 |
| DOI： |
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| THE QUATERNARY ENVIRONMENT EVOLUTION OF THE LEIZHOU PENINSULA AREA, CHINA |
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| Abstract: |
| Analyses of stratigraphic rock of 160 cores, spro-pollen, diatom and field survey show that Leizhou peninsula area has been undergoing a crustal uplifr movement since Quaternary, showing a littoral facies～stream～flood accumulation facies～volcanic accumulation facier. Crustal movement fluctuated in Holocene, resulting in a morphology of the present day through a continental～marine～continental facies. In the process of environmental evolution in the middle Holocene, about 7,000～8,000 years BP, a big sea transgression occurrred in Leizhou peninsula, which underlay the present morphology. But the rise of sea level was due to the rise of global temperature, which was the same for other sea areas such as the East China and South China Seas. |
| Key words: Environment evolution, Sporo-pollen combination, Sedimentary environment, Straitigraphic, Rock character drill hole |
