摘要
近年来对山东省范围内受岩浆侵入的石炭二叠纪煤田（如淄博、黄河北、巨野、膝县等）接触变质带的研究，获得如下进展：（１）提出烟煤接触变质带的分带模式，即分为焦岩混、天然焦、煤焦混和高变煤４个带；根据结构把天然焦分为致密、砾状、柱状和砂（粒）状４种；又根据成分把砾状焦分为３种。（２）讨论了天然焦在显微结构、反射率、显微硬度和Ｘ线衍射等诸方面的特点。（３）有重点地讨论了高变煤的某些微观特点。（４）初步提出一个以煤岩方法为主兼顾其他手段（如地球物理测井、煤化学等）的综合划分煤和天然焦界线的方法。
in the recent years the following progress has been made in studying contact metamorphic zone of Permo-Carboniferous coalfields,such as Zibo, North bank of Yellow River, Juye, Tengxian etc. in Shandong Province which were invaded by igneous intrusion.1. Models are established for classification of contact metamorphic zones.They are zone of mixed coke and magmatic rock, natural coke zone, zone of mixed coal and coke and highly metamorphosed coal zone. And based on its structure the natural coke is again subdivided into compact coke, psephitic coke, prismatic coke and arenous (granular) coke, and based on its compositions, the psephitic coke is subdivided into three groups.2. Characteristics of natural coke are discussed in terms of microstructure,reflectance, micro-hardness, and X-ray diffraction.3. Microscopic characteristics of highly metamorphosed coal are also discussed.4. A comprehensive method, mainly consisting of coal petrology and other methods such as geophysical well logging and coal chemistry, etc. is proposed for classification of coal and natural coke.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1994年第5期465-477,共13页
Journal of China Coal Society
关键词
烟煤
接触变质
煤岩学
煤田地质
bituminous coal
contact metamorphic
coal petrology
boundary between coal and natural coke
