滇东北雨碌地区晚古生代沉积地球化学特征及古环境分析  

Sedimentary geochemical characteristics and paleoenvironmental analysis of Late Paleozoic in Yulu area,northeast Yunnan

作　　者：孙琦森[1] 张世涛[1] 徐松[2] 赵能 李彬[1] 

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]云南省地质矿产勘查开发局中心实验室,云南昆明650106 [3]中国石油天然气公司华北油田分公司第二采油厂工程技术研究所,河北霸州065700

出　　处：《西安石油大学学报（自然科学版）》2014年第4期1-5,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金"迪庆现代冰川湖沉积物种群结构与气候变化关系研究"(编号:31100166;41030212)

摘　　要：通过对滇东北雨碌地区野外露头剖面的勘查采样和研究,从岩石的沉积地球化学特征方面分析了该区晚古生代的古环境特征。研究表明:1雨碌地区晚古生代时期整体属于海相-海陆交互相的沉积环境,从晚泥盆世到早二叠世期间,海平面出现了3次上升和下降;2在晚古生代时期早二叠世之前整体属于温湿-干热气候,属于滨海环境,而到二叠世早期的时候海平面下降,环境变化比较明显,数据表明这个时期该区应属于陆表海环境,整体环境向陆相逐渐变化。Based on the sampling exploration and research of outcrop in Yulu area of the northeast Yunnan,the ancient environmental characteristics of the late Paleozoic are analyzed from the sedimentary geochemical characteristics of rocks. It is shown that the depositional environment in Yulu area is marine- continental alternation in the late Paleozoic,and there is three sea level rising-fallings in the period of from Late Devonian to Early Permian. The area was the warm humid- dry hot climate and belonged to coastal environment before Early Permian of late Paleozoic; sea-level fell in the Early Permian,the environment in the area changed to epicontinental sea,meanwhile,and the overall environment was gradually changing to continental.

关 键 词：滇东北 雨碌地区 晚古生代 沉积地球化学 古环境分析 

分 类 号：TE121.1[石油与天然气工程—油气勘探] P59[天文地球—地球化学]