鲁南近浅海沉积物样品的因子分析及其地质意义

本文提出河流携带入海的沉积物或沿岸剥蚀物中矿物的分布及再组合是受多种因素控制的。为了确定控制鲁南两城河至白马河沉积物样品中矿物分布及再组合的主要因素,作者对该区109个沉积物样品的重矿物资料进行了Q型和R型因子分析。研究指出,在诸多的河流中,白马河和两城河是控制该区沉积物分布的最上要的河流;矿物的化学稳定性是决定该区矿物再组合的主要因素。

FACTOR ANALYSIS AND ITS GEOLOGICAL SIGNIFICANCE IN THE ANALYSIS OF SEDIMENT SAMPLES FROM NEARSHORE AND SHALLOW WATERS OFF SOUTHERN SHANDONG PENINSULA

The distribution and recontribution of minerals brought to the sea by rivers or eroded from coastal areas are controlled by many factors.They are: 1 ) the load of different rivers; 2 ) the chemical stability of minerals; 3) grain size and grain shape composition;4 ) the specific gravity composition of the minerals and 5 ) external environments, including waves, currents, geological and geomorphic conditions.In order to determine the most important factors controlling the distribution and recontribution of minerals, sediment samples were taken from the area off the Liang-cheng River to the Bai-ma River, Ri zhao County, and Q-mode and R-mode factor analysis was performed on the heavy mineral data of 109 samples in this area.The present study shows that the Bai-ma River and the Liangcheng River are the most important rivers in controlling the distribution of the minerals in this area, and chemical stability is the most important factor determining the recontribution of the minerals.