首页   按字顺浏览 期刊浏览 卷期浏览 Structure of the Late Palaeozoic Coffs Harbour Beds, northeastern New South Wales
Structure of the Late Palaeozoic Coffs Harbour Beds, northeastern New South Wales

 

作者: C. L. Fergusson,  

 

期刊: Journal of the Geological Society of Australia  (Taylor Available online 1982)
卷期: Volume 29, issue 1-2  

页码: 25-40

 

ISSN:0016-7614

 

年代: 1982

 

DOI:10.1080/00167618208729191

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

F1macroscopic folds in the Late Palaeozoic Coffs Harbour Beds in the SE portion of the New England Fold Belt are commonly transected by cleavage. These macroscopic folds are tight to isoclinal structures, with a consistent vergence to the NE. Axial surfaces are either steeply dipping to the SW or vertical, and are typically faulted. Anomalous bedding‐cleavage relations occur where the steeply dipping cleavage intersects overturned limbs of F1macroscopic and some F1mesoscopic folds. Elsewhere F1mesoscopic folds have a well developed, axial‐surface cleavage and are rarely downward facing. Cleavage is commonly strike‐divergent from axial surfaces of F1macroscopic folds, except adjacent to the Demon Fault System, where they are parallel. These anomalous cleavage‐folds relations possibly developed during the one deformation. D1structures are refolded by kink‐like folds that are steeply plunging. The structural style of the D1deformation indicates that it possibly resulted from accretionary processes at a consuming plate margin.

 

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