Sökning: "petrological analysis"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden petrological analysis.
1. Det hotade kollektivet : Neolitiseringsprocessen ur ett östmellansvenskt perspektiv
Sammanfattning : This dissertation questions the established view on the social process in connection with Neolithisation. Therefore it has been necessary to discuss more general principles, on how to understand this process of change, when iterant hunter-gatherers became settled farmers. LÄS MER
2. Trans-crustal magma storage in contrasting tectonic settings
Sammanfattning : Magmatic plumbing systems comprise magma chambers, sheet intrusions, and conduits which link the Earth’s deep interior with the Earth’s surface. As such, they are the structural framework of magma transport and storage that is governed by complex physical and chemical processes in magma reservoirs and through the interaction of magma bodies with surrounding crustal rocks over timescales from hours to millions of years. LÄS MER
3. Geochemical and geochronological constraints on 1.88 and 1.80 Ga magmatic events in the Gällivare area, northern Sweden
Sammanfattning : The Gällivare area is situated in northern Norrbotten, Sweden, and hosts the Aitik Cu-Au deposit and the Malmberget Fe deposit. In addition, more than 17 mineral prospects and mineralizations are present, among these the currently developed Nautanen Cu-Au deposit. LÄS MER
4. Assembly of the Caledonian Orogenic Wedge, Jämtland, Sweden
Sammanfattning : Collisional orogeny creates the largest mountain belts on Earth. The Caledonides of Scandinavia are a deeply eroded, ancient mountain belt, which today exposes a deep section through the former orogenic interior. LÄS MER
5. Constraining the timing of veins, faults and fractures in crystalline rocks by in situ Rb-Sr geochronology
Sammanfattning : Precambrian cratons are continent cores archiving the oldest crustal histories on Earth. The crystalline basement of cratons is typically characterized by complex arrays of multiple fracture and fault generations hosting minerals formed by fluids flowing through fracture networks. LÄS MER