| 湄洲岛海岸地貌特征及成因研究 |
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| 引用本文： | 沈金瑞.湄洲岛海岸地貌特征及成因研究[J].莆田学院学报,2011,18(2):86-93. |
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| 作者姓名： | 沈金瑞 |
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| 作者单位： | 莆田学院环境与生命科学系,福建莆田,351100 |
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| 基金项目： | 福建省自然科学基金资助项目,莆田市科技局资助项目 |
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| 摘 要： | 湄洲岛海岸地貌的发育受海洋动力和断层活动双重控制。东部以海岸侵蚀为主,形成海蚀崖、海蚀平台、海蚀壕沟等地貌,在岬角间,形成海滩堆积;西部以堆积为主,形成淤泥质海滩,海蚀作用相对比东部弱。东峤断裂控制了台地和丘陵的分布,断裂东盘抬升形成丘陵,西盘下降形成台地。受北西—南东走向的仙游—郊尾断层左行运动影响,湄洲岛北部向西移动,南部向东移动,使岛的轮廓呈"S"形态。福建沿海在距今0.7—0.6万年前发生海侵时,湄洲岛处于断块抬升环境,就岛的局地范围,处于低海面;在0.4—0.3万年前福建沿海海侵达到高峰时,湄洲岛的海侵经历了两个阶段,第一阶段为水动型海侵,第二阶段为地动型海侵。
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| 关 键 词： | 湄洲岛 海岸地貌 海岸地貌成因 C14同位素年龄 断裂活动 |
The Features and Genesis of Coast Landforms in Meizhou Island |
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| SHEN Jin-rui.The Features and Genesis of Coast Landforms in Meizhou Island[J].journal of putian university,2011,18(2):86-93. |
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| Authors: | SHEN Jin-rui |
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| Institution: | SHEN Jin-rui(Environment & Life Sciences Department,Putian University,Putian Fujian 351100,China) |
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| Abstract: | The coastal landforms of Meizhou Island were mainly associated with the joint effect of both marine dynamics and fault activity.The east area of Meizhou Island was mainly controlled by costal erosion,and landforms such as marine cliff,abrasion platform and ditch were formed,but they were shaped into beaching in headland.The west area of Meizhou Island was mainly controlled by deposition,and silt beach was formed,but the effort of abrasion was weaker than the east.Distribution of platform and hilly land was ... |
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| Keywords: | Meizhou Island coastal landform coast landforms genesis C14 isotopic age fault activity |
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