Regional Geology

Paleozoic metamorphic rocks (quartz-metaconglomerates, quartzites, phyllites, metavolcanics and micaschists) that have been affected by Alpine metamorphism and are superimposed over a Paleozoic gneiss complex. 

Calc-alkaline, shoshonitic and potassic rocks Lamproiles 

The Tuscan units consisting of Late Triassic to early Miocene sedimentary rocks (conglomerates, evaporites, limestones, marls and arenaceous flysch) overlying the metamorphic basement, and affected by Alpine metamorphism in some places (e.g. in the Alpi Apuane). 

The Ligurian complex tectonically superimposed on the Tuscan units, consisting of middle to late Jurassic ophiolites and radiolarites plus Cretaceous to Eocene pelagic limestones and flysch sequences. 

Oligo-Miocene clastic marine sediments resting unconformably over the Liguride sequences. 

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Much research on the Hishikari deposits has been carried out since the discovery of gold veins in 1981. Urashima and Izawa (1983) reported fluid inclusion studies using core samples. Abe et al. (1986) made a detailed description of the veins. The regional geology of this district is described in MMAJ and SMM (1987) and Urashima et al. (1987). 

Shikazono, N. (1997) Mineral and Energy Re.sources. In Mtxtres, E.M. and Fairbridge, R.W. (eds.), Encyclopedia of European and Asian Regional Geology. Chapman and Hall, pp. 436-449. 

Camp, V.E. (1995) Mid-Miocene propagation of the Yellowstone mantle plume head beneath the Columbia River basalt source region. Geology, 23, 435-438. 

Regional Geology The Lac Cinquante uranium deposit is located in the Kivalliq Region of the Hearne Subprovince in the Western Churchill Province, Nunavut. The Western... 

Soller, D. R. and Berg, R. C., 1992, A Model for the Assessment of Aquifer Contamination Potential Based on Regional Geologic Framework Environmental Geology and Water Science, Vol. 19, No. 3, pp. 205-213. 

Fig. 1. Regional geology of the Matagami area (after Sharpe 1968) showing the tonnage of zinc metal at known deposits. Cross section A-A is shown in Fig. 2...

Fig. 1. Regional geological map of Chehelkureh polymetallic ore deposit (modified from Valeh Saeedi 1989).

Fig. 1. Regional geology surrounding the Morila Au Mine, southern Mali. The deposit is hosted by immature Birimian metasediments and is proximal to a large composite post-Eburnean D2 pluton (Doubalkoro) and within a localized low-P contact aureole.

Fig 1. Regional geology map of the Victoria Lake Supergroup showing the Tulks Volcanic Belt occurring from the south west to the north central part of the map area. Also shown are the other volcanogenic massive sulfide deposits (modified from Hinchey 2007). 

Figure 1. Location of the Maze Lake orogenic gold exploration project, and regional geology (after Sandeman et al., 2003)...

The Pebble deposit is located in the Kahiltna terrane, near the boundary between two lithologic packages Jurassic and older magmatic-metamorphic rocks to the southeast, and an assemblage of Mesozoic volcaniclastic and sedimentary rocks overlain by Tertiary volcanic rocks, to the northwest. An extended discussion of the regional geology is given in Kelley etal. (this volume). 

Ye, R. 2004. Study on deep-penetrating geochemical methods for Jinwozi gold deposit in desert regions. Geology and Exploration, 40, 65-70 (in Chinese with English abstract). 

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