摘要
西秦岭中泥盆世沉积环境可分为深海—次深海盆地相区、碳酸盐台地及浅海陆棚相区和浅海盆地相区三大部分,其中又可划出若干相、亚相及微相。对于铅—锌矿产至关重要的是断陷滞流盆地相及碳酸盐台地相。矿床的形成与沉积环境关系密切:热水沉积型铅—锌矿床生成于断陷滞流盆地环境中,受生长断裂、热水沉积作用及断陷滞流盆地的联合控制;热水沉积改造型铅—锌矿床生成于碳酸盐台地边缘生物礁亚相中,受碳酸盐台地、生物礁及热水沉积改造作用的控制。
The Middle Devonian sedimentary environment of the West Qining Moun-tains can be divided into the abyssal-bathyal basin facies district, carbonate plat-form facies district and shallow-sea shelf faces district. These facies districts canbe further divided into some facies, sub-facies and micro-facies. The down-faultedstagnant basin facies and carbonate platform facies have close relationship withlead and zinc deposits. The formation of lead and zinc ore depesits is closely related to the sedimen-tary environment: thermal water sedimentary lead and zinc deposits were formedin the down-faulted stagnant basin environment and controlled by growth faults,thermal water sedimentation and faulted stagnant basin; reformed thermal watersedimentary lead and zinc deposits were formed in reef sub-faces on margins ofthe carbonate platform and controlled by the carbonate platform, organic reefs andthermal water sedimentation-reformation.
出处
《地质论评》
CAS
CSCD
北大核心
1993年第2期156-164,T001,共10页
Geological Review
关键词
中泥盆世
沉积环境
铅锌矿床
the West Qinling Mountains
Middle Devonian
sedimentary environment
Pb--Zn deposit
