摘要
应用泥质岩的多种氧化物比值,探讨了陕甘宁盆地石炭至侏罗纪的古气候状况及其演变规律,自中石炭世至中三叠世,再由晚三叠世至安定期,泥质岩的各种氧化物比值有着逐渐依次增大或减小的两个互不雷同的旋回,与之相应,以上时期反映在古气候上存在着由潮湿→半潮湿→半干燥的早、晚两个旋回。
By using various oxide ratios in argillite, the paper discussed the situation of Paleoclimate and its evolutioary law from Carboniferous to Jurassic Period in Shanganning Basin. From Mid - Carboniferous to mid - Triassicepoch and late Triassic epoch to Antinian, the ratios of various oxides in argillite show two unsimilar cycles which gradually increase or decrease in vertical profile,accordingly, during the same period the paleoclimate exists the early and late two cycles i. e. from the moist to semimoist and semiarid climate.
出处
《地球科学进展》
CAS
CSCD
1993年第6期57-62,共6页
Advances in Earth Science
基金
甘肃省自然科学基金
关键词
泥质岩
氧化物比值
古气候
盆地
argillite,ratio of oxide,paleoclimate evolution,shanganning Basin
