Ccu{>ilation Bedrock Geology: Stony Rapids Area (NTS 74P) by c. F
... gneissic foliation , occurs in a zone up to about 8 km wide. The main shear zone ranges in width fran 100 to 500 m; in the south , along the northwest shore of Black Lake , flinty myl onitic rocks (Unit S) crop out in the proximity of a steep scarp. The shear zone here i s a high- angle reverse faul ...
... gneissic foliation , occurs in a zone up to about 8 km wide. The main shear zone ranges in width fran 100 to 500 m; in the south , along the northwest shore of Black Lake , flinty myl onitic rocks (Unit S) crop out in the proximity of a steep scarp. The shear zone here i s a high- angle reverse faul ...
Metallogeny of Paleogene and Neogene volcanic belts in Hungary
... Paleogene volcanic units form a 300 km long and 30-50 km wide NE-SW trending belt along PBL (Fig. 1B). Intrusive-volcanic complexes crop out near Recsk and in the Velence Mts., but they are covered in the Zala Basin. Other pyroclastic deposits are also known from drillings. Basaltic-andesite, andesi ...
... Paleogene volcanic units form a 300 km long and 30-50 km wide NE-SW trending belt along PBL (Fig. 1B). Intrusive-volcanic complexes crop out near Recsk and in the Velence Mts., but they are covered in the Zala Basin. Other pyroclastic deposits are also known from drillings. Basaltic-andesite, andesi ...
The Cordero discovery Chihuahua, Mexico: A novel Ag, Au, Zn, Pb
... and in mineralized intrusion contact breccias and diatreme breccias. In cross section, sulfides correlate with the lower portions of phyllic alteration zones and the upper portions of potassic alteration zones within each mineralized intrusive center. Alteration assemblages are typically strong and ...
... and in mineralized intrusion contact breccias and diatreme breccias. In cross section, sulfides correlate with the lower portions of phyllic alteration zones and the upper portions of potassic alteration zones within each mineralized intrusive center. Alteration assemblages are typically strong and ...
The Bassett Lake mafic intrusion is situated on and immediately
... Well-developed layering is present mainly in the northern and western parts of the body, and occurs on a scale varying from 1 and 2 cm to over 2 m. The layering is commonly compositional, but textural layering is also developed. To the west of Bassett Lake, in the area of very high magnetic intensit ...
... Well-developed layering is present mainly in the northern and western parts of the body, and occurs on a scale varying from 1 and 2 cm to over 2 m. The layering is commonly compositional, but textural layering is also developed. To the west of Bassett Lake, in the area of very high magnetic intensit ...
Noranda
... Ga) and are surrotmded by Proterozoic orogenic zones (2.2-1.8 Ga) and the Grenville Province (1.3-1.0 Ga) to the south. The Rouyn-Noranda area is located in the south-central Superior Province, the largest Archean craton in the world. The Superior Province includes four types of lithotectonic domain ...
... Ga) and are surrotmded by Proterozoic orogenic zones (2.2-1.8 Ga) and the Grenville Province (1.3-1.0 Ga) to the south. The Rouyn-Noranda area is located in the south-central Superior Province, the largest Archean craton in the world. The Superior Province includes four types of lithotectonic domain ...
Geology of the New Britannia Mine, Snow Lake (NTS 63K16
... The main ore type in the mine is ‘quartz-carbonate-mica schist’ (QCMS) that varies from fine-grained sucrose and massive where mica contents are low, to weakly to moderately foliated where lineated reddish brown mica (phlogopite) is abundant. Several ages of quartz veins are present throughout the m ...
... The main ore type in the mine is ‘quartz-carbonate-mica schist’ (QCMS) that varies from fine-grained sucrose and massive where mica contents are low, to weakly to moderately foliated where lineated reddish brown mica (phlogopite) is abundant. Several ages of quartz veins are present throughout the m ...
Hydrothermal Alteration Associated with Gold Mineralization at the
... Previous work at the Giant Mine has recognized that gold mineralization is associated with deformation and intense hydrothermal alteration of the mafic volcanic rocks. General alteration mineral assemblage transitions consist of: (1) a quartz-carbonate-sulphide core that hosts Au mineralization, (2) ...
... Previous work at the Giant Mine has recognized that gold mineralization is associated with deformation and intense hydrothermal alteration of the mafic volcanic rocks. General alteration mineral assemblage transitions consist of: (1) a quartz-carbonate-sulphide core that hosts Au mineralization, (2) ...
Abstract
... represent mafic volcanic flows. The analytic signal transformation highlights magnetic anomalies within this unit, which are thought to represent synvolcanic mafic plutons. Large felsic intrusions occur throughout the Penokean volcanic belt, many of which are outcropping. Previous age dating of thes ...
... represent mafic volcanic flows. The analytic signal transformation highlights magnetic anomalies within this unit, which are thought to represent synvolcanic mafic plutons. Large felsic intrusions occur throughout the Penokean volcanic belt, many of which are outcropping. Previous age dating of thes ...
Temagami Greenstone Belt
The Temagami Greenstone Belt (TGB) is a small 2.7 billion year old greenstone belt in the Temagami region of Northeastern Ontario, Canada. It represents a feature of the Superior craton, an ancient and stable part of the Earth's lithosphere that forms the core of the North American continent and Canadian Shield. The belt is composed of metamorphosed volcanic rocks that range in composition from basalt to rhyolite. These form the east-northeast trend of the belt and are overlain by metamorphosed sedimentary rocks. They were created during several volcanic episodes involving a variety of eruptive styles ranging from passive lava eruptions to viscous explosive eruptions.Part of the Canadian Shield, the Temagami Greenstone Belt contains some of the oldest known rocks on Earth. The belt is made up of a number of geologic features such as batholiths, stocks, dikes, volcanic complexes, layered intrusions and deformation zones. These are situated in several geographical townships in the municipality of Temagami, including Chambers, Strathy, Strathcona, Briggs and possibly Best.