根据在核心 YDZ1 测量沉积的磁性的参数,与一种谷物尺寸结合了分析并且 Carbon-14 标明日期,沉积的磁性和在在最后冰川的最大值以后的 Huanghe (黄河) 三角洲区域的沉积环境被学习了。结果表演一个假单个领域并且多的 ferrimagnetic 矿物质领域粒子在核心 YDZ1 统治沉积的磁性。有瑕疵的反 ferrimagnetic 矿物质深入地 24.0-22.1 m,和更稳定单人赛的领域的在沉积上有更多的贡献,假单个领域粒子存在。非滞后的残余的磁化和到浸透的非滞后的残余的磁化的危险性的比率的危险性等温的残余的磁化表演在 24 m ,深入地 24.0-13.5 m 的一个显著增加趋势,和在 13.5 m 的深度的快速的减少的深度下面的一个减少趋势,然后一个变化趋势向上。上述二个磁性的参数和到集体危险性的非滞后的残余的磁化的危险性的比率能为泥土的内容被认为是代理指示物(< 4 m ) 并且有细密纹理的尺寸(< 32 m ) 。在在 Huanghe 三角洲区域的最后冰川的最大值以后的沉积环境经历了河的外形,潮汐的扁平的外形,浅海的外形,职业人员三角洲外形,三角洲前面外形和泛滥平原外形。Holocene 违反层的厚度是 10.5 m,底层的深度根据 YDZ1 核心是大约 24 m。沉积动态与 strongweak- 有一个变化趋势强壮,它被 Flemming 三角形的纲要证明了。
On the basis of measuring the magnetic parameters of sediment in Core YDZ1, combined with a grain size analysis and Carbon-14 dating, the magnetic properties of sediment and sedimentary environment in the Huanghe(Yellow River) Delta area after the last glacial maximum have been studied. The results show that the ferrimagnetic minerals of a pseudo single domain and multi domain particles dominate the magnetic properties of sediment in Core YDZ1. The imperfect anti ferrimagnetic minerals have more contribution on sediment in a depth of 24.0–22.1 m, and more stable-single domain and pseudo single domain particles exist. The susceptibility of anhysteretic remanent magnetization and the ratio of the susceptibility of anhysteretic remanent magnetization to saturation isothermal remanent magnetization show a decrease trend below depth of 24 m, a marked increase trend in a depth of 24.0–13.5 m, and a rapid decrease at depth of 13.5 m, then a fluctuation trend upward. The above two magnetic parameters and the ratio of the susceptibility of anhysteretic remanent magnetization to the mass susceptibility can be regarded as the proxy indicators for the content of clay(〈4 μm)and the fine-grained size(〈32 μm). The sedimentary environment after the last glacial maximum in the Huanghe Delta area has experienced the fluvial facies, the tidal flat facies, the neritic facies, the pro delta facies, the delta front facies and the floodplain facies. Thickness of the Holocene transgression layer is 10.5 m and the depth of substrate is about 24 m according to the YDZ1 core. The sedimentary dynamic has a variation trend with strongweak-strong, which has been proved by the Flemming triangular schema.