摘要
金矿与剪切带在空间上的关系大致可分为四种情况:①金矿体(脉)产于主剪切带中,并与其中的R、D、P裂隙一致。或呈浸染状弥散于断层岩中;②矿体(脉)与剪切带中的T、R裂隙一致,并穿过主(韧性)剪切带边界;③矿体(脉)横(斜)切主(韧性)剪切带:④矿体(脉)产于主(韧性)剪切带两侧的次级脆性断裂中。在成矿时代上有前剪切带期、同剪切带期和后剪切带期金矿。与剪切带有成因联系的金矿床的成矿作用称为构造—侧分泌作用或构造动力成矿作用。
It has been recognized that the relationships between the gold deposits and shear zones in space were: 1) the gold ore bodies/lodes occurred in shear zone and were concordance with the orientation of the R, D, P fractures or disseminated in the faulted rock; 2) they were concordance with the T, R' fractures in the shear zones and crossed the boundaries of the main (ductile) shear zone ; 3) they acut cross or oblique through the main (ductile) shear zone; 4) they occurred in the subordinate brittle faults in the both walls of main (ductile) shear zone. Temporally, the epoch of the gold ore deposits related with shear zones have pre-shear zone, syn-shear zone anb post-shear zone period. And the gold mineralization related with the shear zones genetically had been suggested tectono-lateral secretion or tectono-dynatic metallization, and the new metallogenetic theory is challenging seriously to the traditional one.
出处
《矿产与地质》
1990年第1期18-24,共7页
Mineral Resources and Geology
