摘要
本文较深入地讨论了孢粉化石在埋藏过程中,不断经受着的物理、化学、生物等作用对孢粉化石形态变化的影响。物理作用使化石挤压呈片状升呈不同的观察面,由于不同应力的作用可使化石发生褶皱、破裂或破碎等。化学作用可使化石外壁被氧化变薄以至消失,在还原环境中随着埋藏深度的增加,温度的升高,压力的加大,导致孢粉化石的成分发生一系列的变化,不断释放出油与气,同时使化石的个体变小,沟、缝、刺、瘤等构造或纹饰随之发生相应的变化。生物作用主要表现在化石被细菌部分或全部腐蚀等。
<ABSTRACT> This paper profoundly discusses the different processes, such as
physical, Chemical anol biologic effeets with the long burial metamorphism that
the fossil sporo-polleus constantly experiences. Due to physical action,. the fossil
sporo-pollens have been colltpacted and become schistose and observed profiles,
and they have been folded or fractured by various stresses. Thc fossil exine
duc to oxidation reduction has thinned or disappeared. Under the reducing
environmental conditions, various changes of the fossil sporo-pollen com-
positions have occurred and released hybrocarbons, owing to increasement in
the burial depth, temperature and pressure. As a result, the fossil individuals
have become small, and their forms, such as ditches, crevices, splinters, tumours,
networks and holes, have also changed correspondingly. The important expression
of biologic processes is the partial or full bacterial decomposition.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
1989年第4期23-28,共6页
Petroleum Geology & Oilfield Development in Daqing
关键词
孢粉
古植物学
埋藏深度
形态
: sporopollen form, buried depth, palaeophytology
