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我们检验了浙江沿海地区已有的数百个钻孔资料,根据全新世沉积的岩相变化及其时代并结合考古资料和对若干地貌现象的观察和分析,就浙江海岸全新世海面变化进行了初步的探讨.一、全新世海岸地层序列:距今七千年前的海面变化根据对东海DC—1孔所取岩芯的古地磁和C~(14)年龄测定,现今海面以下47.4米处为全新世地层的下限,时代为距今12,000年前(11,510±570年),因此,一般而言,浙江紧邻现代岸线的地区,全新世地层正常的最大厚度在45米左右,向陆的厚度逐渐减小,向海越过内陆架也急剧变薄.但实际情况远为复杂得多,主要因为浙江沿岸原始地形曲折起伏,加之海侵过程中各种动力要素的相互作用和影响,使全新世地层岩相多
We examined hundreds of borehole data available in the coastal areas of Zhejiang Province. Based on the lithofacies changes of the Holocene sediments and their age, combined with archaeological data and observation and analysis of several landscape phenomena, we conducted a survey on the changes of the Holocene sea level over the Zhejiang coast First, the sequence of the Holocene seashore: sea surface dating back 7000 years ago According to the paleomagnetic and C ~ (14) age determination of the cores taken from the hole in the East China Sea DC-1, at 47.4 meters below sea level Is the lower limit of the Holocene strata, dating from 12,000 years ago (11,510.570 years). Therefore, in general, the normal thickness of Holocene strata in the area close to the modern shoreline of Zhejiang is about 45 meters. The thickness gradually decreases and the seaward over the inland shelf also sharply decreases, but the actual situation is much more complex, mainly because of the undulating ups and downs of the original terrain along the coast of Zhejiang and the interaction and influence of various dynamical elements in the process of transgression Holocene and many lithofacies