ISSN:0016-7614    

DOI:10.1080/00167615508728460

出版商:Taylor & Francis Group    

年代:1955

数据来源: Taylor

摘要:

The schists and gneisses of the Kanmantoo Group in the eastern Mt. Lofty Ranges show a well marked foliation and lineation. The foliation seen in the field is usually parallel to the bedding. The micas have a preferred orientation parallel to the lineation, resulting in girdles or partial girdles in the fabric diagrams. Quartz does not appear to have any preferred orientation. The lineations plunge to the S.S.E. or N.N.W., the mean plunge being about 20° to the S.S.E. This agrees with the plunge of the fold axes measured in the field and with the plunge of major structures deduced from field mapping. The area is thus one in which all the lineations are “b” lineations.

ISSN:0016-7614    

DOI:10.1080/00167615508728461

出版商:Taylor & Francis Group    

年代:1955

数据来源: Taylor

ISSN:0016-7614    

DOI:10.1080/00167615508728462

出版商:Taylor & Francis Group    

年代:1955

数据来源: Taylor

摘要:

The King Island Scheelite Mine lies in the contact aureole of a granodiorite stock. Its open cut and numerous drill cores expose a contact metamorphosed and metasomatized series of finely interbedded argillaceous and calcareous sediments, with interleaved flows of picrite‐basalt and basic pyroclastics, the scheelite ore being limited to two limestone horizons. The range and gradation in composition of the original rocks has resulted in an unusual variety of metamorphic rocks, including forsterite‐phlogopite‐spinel‐tremolite hornfels, antho‐phyllite‐cordierite hornfels, biotite hornfels, actinolite hornfels, a variety of calc‐flinta, and marbles. The original sedimentation gave rise to a rapid alternation of limestone and shale, many times repeated, and during metamorphism these rocks reacted with each other to produce narrow bands of calc‐flinta.

ISSN:0016-7614    

DOI:10.1080/00167615508728463

出版商:Taylor & Francis Group    

年代:1955

数据来源: Taylor

ISSN:0016-7614    

DOI:10.1080/00167615508728459

出版商:Taylor & Francis Group    

年代:1955

数据来源: Taylor