Skip to main content
Conference Proceedings

Annual Conference, Darwin

Conference Proceedings

Annual Conference, Darwin

PDF Add to cart

Controls on Gold Mineralisation in the Pine Creek Geosyncline

The Early Proterozioc Pine Creek Geosyncline hosts a large number of gold showings. Mineralisation types include stratiform, synsedimentary deposits within iron formation and carbonaceous mudstone; disseminations in granophyric intrusives; and quartz vein related concentrations in the form of shear fillings, saddle reefs and stockworks. Stratiform gold deposits preferentially formed near penecontemporareous faults during periods of basin instability. Intrusive basic magmas later assimilated some stratiform mineralisation and subsequently redeposited it within differentiated phases._x000D_
Gold was again remobilized during regional deformation and metamorphism. Stratiform mineralisation was upgraded insitu in high strain zones and gold was mobilized into metamorphic fluids. Fluid induced fracturing during prograde metamorphism and later uplift caused the deposition of extensive gold rich vein systems. The genetic relationship between gold deposit types is reflected in the clustering of showings along regional anticlines, and provides a powerful exploration tool. The large volume of 'exhalative'material in the Geosyncline with elevated gold content suggests significant economic stratiform mineralisation may be present, and probably provides a source for later disseminated and vein deposits.
Return to parent product
  • Controls on Gold Mineralisation in the Pine Creek Geosyncline
    PDF
    This product is exclusive to Digital library subscription
  • Controls on Gold Mineralisation in the Pine Creek Geosyncline
    PDF
    Normal price $22.00
    Member price from $0.00
    Add to cart

    Fees above are GST inclusive

PD Hours
Approved activity
  • Published: 1984
  • PDF Size: 1.253 Mb.
  • Unique ID: P198403007

Our site uses cookies

We use these to improve your browser experience. By continuing to use the website you agree to the use of cookies.