摘要
吴桂桥井田喜山期岩浆活动剧烈，多以岩床形式顺层侵入煤层顶底板及煤层中间，对煤层赋存形态、结构、煤质产生较大破坏影响，变质作用以接触变质为主，煤类复杂。接触变质带可进一步划分为岩焦混杂带、天然焦带、焦化煤带、正常煤带。
During Himalayan stage,in Wuquiqiao mine field,there were strong magmatic activity,and magmatic intrusion into coal－beds or its top and botton along layers as a sill form primarily,and caused serious destruction to the preservative shape、structure of coal－beds and coal quality.The metamorphism of coal is primarily contact metamorphism,and there are complex coal types.The contact metamorphic zone may be further divided into coking coal mixing zone、natural coke zone、coking coal zone and normal coal zone.
出处
《中国煤田地质》
2001年第2期15-16,共2页
Coal Geology of China
