The Palaeoproterozoic Rinkian fold belt in West Greenland consists of reworked Archaean basement,... more The Palaeoproterozoic Rinkian fold belt in West Greenland consists of reworked Archaean basement, mainly orthogneiss, and the unconformably overlying Palaeoproterozoic Karrat Group. Both parts were intensely deformed and metamorphosed at around 1.87 Ga, at which time the crustal anatectic Prøven igneous complex was emplaced into the northern part of the belt. Seven new hornblende and muscovite 40 Ar/ 39 Ar
The Saqqaq supracrustal rocks in southern Nuussuaq, West Greenland, host stratiform gold minerali... more The Saqqaq supracrustal rocks in southern Nuussuaq, West Greenland, host stratiform gold mineralisation in a 3-4 m thick impure chert horizon of volcanogenic-exhalative origin; chip samples average c. 0.8 ppm Au (thickness 3.3 m) over a strike length of 8 km, including 1.1 ppm Au (thickness 3.7 m) over a strike length of 1.6 km. Silicate minerals in and adjacent
The Precambrian terrain of eastern Nuussuaq and north-east Disko Bugt largely consists of late Ar... more The Precambrian terrain of eastern Nuussuaq and north-east Disko Bugt largely consists of late Archaean (c. 2800 Ma) orthogneisses, intercalated with units of strongly deformed Archaean supracrustal rocks. The latter are up to several kilometres wide and comprise both metavol- canic and metasedimentary rocks within which local occurrences of gold have been found. In central Nuussuaq a layered complex of
Following the recognition of contractional Palaeoproterozoic reworking of predominantly Archean c... more Following the recognition of contractional Palaeoproterozoic reworking of predominantly Archean crust of the Nagssugtoqidian Orogen (NO) of central West Greenland around 1949, a more northerly belt with structural styles related to presumed vertical tectonics was later defined as the Rinkian belt (RB). The boundary (and, thus, relationship) between the two belts remained poorly defined due, in part, to a lack
The parallel Trans-Hudson-aged Nagssugtoqidian Orogen and Rinkian Fold Belt of West Greenland hav... more The parallel Trans-Hudson-aged Nagssugtoqidian Orogen and Rinkian Fold Belt of West Greenland have long been considered distinct orogenic belts separated by a zone of low or no Palaeoproterozoic strain in the intervening Disko Bugt region. New UPb geochronology confirms the ...
The Palaeoproterozoic Rinkian fold belt in West Greenland consists of reworked Archaean basement,... more The Palaeoproterozoic Rinkian fold belt in West Greenland consists of reworked Archaean basement, mainly orthogneiss, and the unconformably overlying Palaeoproterozoic Karrat Group. Both parts were intensely deformed and metamorphosed at around 1.87 Ga, at which time the crustal anatectic Prøven igneous complex was emplaced into the northern part of the belt. Seven new hornblende and muscovite 40 Ar/ 39 Ar
The Saqqaq supracrustal rocks in southern Nuussuaq, West Greenland, host stratiform gold minerali... more The Saqqaq supracrustal rocks in southern Nuussuaq, West Greenland, host stratiform gold mineralisation in a 3-4 m thick impure chert horizon of volcanogenic-exhalative origin; chip samples average c. 0.8 ppm Au (thickness 3.3 m) over a strike length of 8 km, including 1.1 ppm Au (thickness 3.7 m) over a strike length of 1.6 km. Silicate minerals in and adjacent
The Precambrian terrain of eastern Nuussuaq and north-east Disko Bugt largely consists of late Ar... more The Precambrian terrain of eastern Nuussuaq and north-east Disko Bugt largely consists of late Archaean (c. 2800 Ma) orthogneisses, intercalated with units of strongly deformed Archaean supracrustal rocks. The latter are up to several kilometres wide and comprise both metavol- canic and metasedimentary rocks within which local occurrences of gold have been found. In central Nuussuaq a layered complex of
Following the recognition of contractional Palaeoproterozoic reworking of predominantly Archean c... more Following the recognition of contractional Palaeoproterozoic reworking of predominantly Archean crust of the Nagssugtoqidian Orogen (NO) of central West Greenland around 1949, a more northerly belt with structural styles related to presumed vertical tectonics was later defined as the Rinkian belt (RB). The boundary (and, thus, relationship) between the two belts remained poorly defined due, in part, to a lack
The parallel Trans-Hudson-aged Nagssugtoqidian Orogen and Rinkian Fold Belt of West Greenland hav... more The parallel Trans-Hudson-aged Nagssugtoqidian Orogen and Rinkian Fold Belt of West Greenland have long been considered distinct orogenic belts separated by a zone of low or no Palaeoproterozoic strain in the intervening Disko Bugt region. New UPb geochronology confirms the ...
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