摘要
在岩溶及其伴生的成矿作用发生的同时,来自溶解岩石中被分离出的有机质、地表水携带的陆生植物及由含矿卤水自深部或它地搬运的有机化合物与其它岩溶液填物一起沉积于岩溶洞穴中.根据它们的不同来源及受到岩溶成矿的影响程度,可区别出改造型、继承型、搬迁型、原生型有机质.由于有机质的热稳定性低,因此能较好地反映岩溶的性质、演变过程及其中成矿的特点.研究岩溶型铅锌矿床中有机质的类型、变化、分布规律,有助于矿床成因研究,指导找矿.
When karstification and the accompanying mineralization occur,the organic matter separated from rocks solved,the continental plants carried by surface water,and the organic compounds transported by the ore-bearing brines from the depths of the crust or from long distances deposit together with the karstic fillings in places within the karst system. Organic matter of the degradation type (biodegradation and thermal degradation) ,the heritage type,the primary type,and the heterochthonous transportation type are distinguished on the basis of their sources and the degrees of influence of the karst mineralization. Due to a low thermal stability and a sensitive maturation to various geological thermal events, the organic matter can better represent the characteristics of karstification, the developmental process of karst system and the accompanying Pb-Zn mineralization. Research of the types,the variations,the distribution and other geochemical behaviour of the organic matter in the karst type Pb-Zn ore deposits can aid the study of metallogeny and the exploration of deposits.
出处
《地质科技情报》
CAS
CSCD
北大核心
1991年第3期63-68,共6页
Geological Science and Technology Information
