中文摘要：

以重庆地区红层泥岩为对象,对其球状风化剥落的形貌、剥落层序、剥落层层数、剥落层厚度、剥落物形态及其堆积特征等进行了分析。调查和分析表明,泥岩球状风化是水分场、温度场有关的各种风化作用共同作用的结果,其风化剥落经历了局部变形与应力集中、风化裂隙切割、椭球化、拱形开裂与球状逐层剥落的过程。红层泥岩球状风化剥落速度快,风化球因分叉明显,稳定性差,难以长久保留。

英文摘要：

In this paper,the redbed mudstone in Chongqing is presented to study the spheroidal weathering exfoliation. Characteristics of exfoliation morphology,exfoliation sequence,exfoliation shells,shell thickness,exfoliation shape and exfoliation deposits are analyzed,respectively. Field investigation and analysis reveal that spheroidal weathering of mudstone is the product of weathering processes related to moisture and temperature fields. It also shows that spheroidal weathering exfoliation experience a process from local deformation and stress concentration,weathering-induced fracturing,ellipsoidal processing to arch cracking and hierarchical exfoliating. It is obvious that spheroidal weathering exfoliation of redbed mudstone is rapid and the mudstone corestone is too poorly stable to persist for a long time due to the apparent corestone branching and poor stability.