Metamorphism and metasomatism at king Island Scheelite Mine1
作者:
A. B. Edwards,
G. Baker,
K. J. Callow,
期刊:
Journal of the Geological Society of Australia
(Taylor Available online 1955)
卷期:
Volume 3,
issue 1
页码: 55-98
ISSN:0016-7614
年代: 1955
DOI:10.1080/00167615508728463
出版商: Taylor & Francis Group
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.
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