摘要
广西大厂泥盆系浊积岩主要见于中泥盆统，具明显的鲍玛序列，其组分由跳跃和悬浮两部分组成，堆积速率为（5．1～38．5）×10－4m／a。硅质岩主要见于上泥盆统，其中发现有海底火山热液活动的喷口，通过所含铁闪锌矿FeS的含量分析计算，其形成压力为0、267×108Pa，相当于2670m水深。所有特征表明它们是在深水裂谷盆地背景下，由于浊流沉积和热水沉积而形成的，是大厂热液成因超大型块状硫化物矿床和生物礁油气藏重要的标志。
The Devonian turbidites in Dachang area are mainly Middle Devonian with obvious Bouma sequence.Their components consist of two parts that are jump and suspension. The packing rate is 5. 1 ×1O-4～38. 5× 1O-4m/a. The silicalites are mainly Upper Devonian with the eruptive vents of the hydrothermal solution activity of submarine volcanoes discovered among them. It is calculated from the FeS content of marmatites that the forming pressure is 0.267×1O8Pa, correspOnding to 267Om water depth. All characteristics of turbidites and silicalites show that they are formed by turbidity current and hot-water deposition under the background of deep-water rift basins, and are important marks of massive sulfide super-megadeposit and biohermal oil and gas accumulation of hydrothermal solution genesis in Dachang area.
出处
《石油实验地质》
CAS
CSCD
北大核心
1997年第1期87-91,共5页
Petroleum Geology & Experiment
基金
同济大学跨学科青年教师基金
