论文部分内容阅读
对采集自渤海北部海域的23个表层沉积物样品进行碎屑矿物鉴定,以探讨研究区矿物组成特征及影响因素。结果表明:采样区碎屑矿物平均含量为17.1%,其中轻矿物9种,平均含量为96.77%;重矿物33种,平均含量为3.23%。Q型聚类方法分析结果表明,由于构造块体的基岩差异,研究区沿东-西方向可分为两个矿物组合区,在风化搬运规律、蚀源区等差异影响下又可将其细分成四个矿物组合亚区。研究发现,影响渤海北部海域表层沉积环境形成的主要因素是物源,次要因素是水动力,其解释贡献率分别为41.91%和22.74%。
Twenty-three surface sediment samples collected from the northern Bohai Sea were detritalized to study the mineral composition characteristics and influencing factors. The results show that the average content of detrital minerals in the sampling area is 17.1%, of which 9 are light minerals, with an average content of 96.77% and 33 kinds of heavy minerals with an average content of 3.23%. The results of Q-type clustering analysis show that due to the difference of bedrock of the tectonic blocks, the study area can be divided into two mineral assemblages along the east-west direction. Under the influence of the weathering and transportation rules and the source area, Subdivided into four mineral complexes sub-region. The study found that the main factor influencing the formation of surface sedimentary environment in the northern Bohai Sea is the source of sediment, and the secondary factor is hydrodynamic. The explanation contribution rates are 41.91% and 22.74% respectively.