晋江深沪湾一带中更新统同安组地质特征及成因探讨  

Geological Characteristics and Genesis of the Middle Pleistocene Tong'an Formation in Shen-Huwan Area of Jinjiang City

作　　者：聂童春 Nie Tongchun(Fujian Institute of Geology survey and Research,Fuzhou,350013)

机构地区：[1]福建省地质调查研究院,福州350013

出　　处：《福建地质》2023年第1期12-18,共7页Geology of Fujian

基　　金：福建省自然资源厅“福建1∶5万晋江市、深沪镇幅区域地质调查”。

摘　　要：晋江深沪湾一带发育的一套半固结状网纹状红土,夹有砂砾石层、黏土层,具有明显的沉积搬运分选特征,将该套层位厘定为中更新统同安组,光释光年龄为(107.9±9.2)ka BP、(134.4±6.9)ka BP。在同安组的地质特征及其岩性组合的基础上,通过粒度分析、化学分析进一步探讨了同安组形成环境。A set of semi-consolidated reticulated laterites developed in the Shenhuwan area of Jinjiang city is intermixed with sand and gravel layers,and has obvious characteristics of depositional transport sorting.The stratigraphic location of this set is determined as the Middle Pleistocene Tong’an Formation,and the luminescence ages are(107.9±9.2)ka BP and(134.4±6.9)ka BP.On the basis of geological characteristics and lithologic combination of Tong'an Formation,the formation environment of Tong'an Formation is further discussed by particle size analysis and chemical analysis.

关 键 词：网纹状红土 中更新统 同安组 晋江深沪湾 

分 类 号：P534.63[天文地球—第四纪地质学]