| Quaternary Volcanic Activities in Shandong Peninsula and Northern Parts of Jiangsu and Anhui Provinces |
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| 作者姓名： | 郑洪汉 高维明 |
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| 作者单位： | [1]InstituteofGeochemistry,AcademiaSinica [2]EarthquakeAnalysisandPredictionCentre,StateSeismologicalBureau |
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| 摘 要： | Quaternary volcanic rocks often coexist with loess,as observed in the same geologic sections in the Shandong Peninsula and northern parts of Jiangsu and Anhui provinces.The development age of Shandong loess in close to that in the middle reaches of the Yellow River.Loess strata are of synchronous implication in the loess belt of North China.So the ages of volcanic activities can be es-timated approximately from the stratigraphic relations between loess layers and volcanic rocks.The re-sults of dating of the Quaternary volcanic rocks,baked layers and the TL dates of loess samples sug-gest that the Quaternary volcanic activity can be divided into 4 stages in the region studied,with the ages being 1.15-1.03,0.86-0.72,0.55-0.33 and 0.02 Ma B.P.respectively .The occurrence of tephra in the Shandong loess sections is possible due to multiple episodes of volcanism during the Quaternary time.
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| 关 键 词： | 山东半岛 火山岩 江苏 安徽 火山活动 黄土 |
Quaternary volcanic activities in Shandong Peninsula and northern parts of Jiangsu and Anhui provinces |
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| Zheng Honghan,Gao Weiming,Zhu Zhaoyu,Huang Baolin,Lu Liangcai.Quaternary Volcanic Activities in Shandong Peninsula and Northern Parts of Jiangsu and Anhui Provinces[J].Chinese Journal of Geochemistry,1990,9(4):330-335. |
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| Authors: | Zheng Honghan Gao Weiming Zhu Zhaoyu Huang Baolin Lu Liangcai |
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| Institution: | (1) Institute of Geochemistry, Academia Sinica, China;(2) Earthquake Analysis and Prediction Centre, State Seismological Bureau, 100036 Beijing, China |
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| Abstract: | Quaternary volcanic rocks often coexist with loess, as observed in the same geologic sections in the Shandong Peninsula and
northern parts of Jiangsu and Anhui provinces. The development age of Shandong loess in close to that in the middle reaches
of the Yellow River. Loess strata are of synchronous implication in the loess belt of North China. So the ages of volcanic
activities can be estimated approximately from the stratigraphic relations between loess layers and volcanic rocks. The results
of dating of the Quaternary volcanic rocks, baked layers and the TL dates of loess samples suggest that the Quaternary volcanic
activity can be divided into 4 stages in the region studied, with the ages being 1.15–1.03, 0.86–0.72, 0.55–0.33 and 0.02
Ma B. P., respectively. The occurrence of tephra in the Shandong loess sections is possible due to multiple episodes of volcanism
during the Quaternary time.
This study was financially supported by the National Science Foundation of China. |
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