Sökning: "ultrahigh-pressure metamorphism"

Hittade 2 uppsatser innehållade orden ultrahigh-pressure metamorphism.

1. 1. Pressure-Temperature-time Constraints on the Deep Subduction of the Seve Nappe Complex in Jämtland and southern Västerbotten, Scandinavian Caledonides

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Johanna Holmberg; [2017]
   Nyckelord :Seve Nappe Complex; COSC-1; Raman spectroscopy; QuiG barometry; kyanite-garnet gneiss; Lu-Hf garnet geochronology; Seveskollan; COSC-1; Raman spektroskopering; QuiG barometri; kyanit-granatförande gnejs; Lu-Hf granat geokronologi;

   Sammanfattning : The Scandinavian Caledonides are defined by long transported thrust sheets emplaced in a nappe stratigraphic succession onto the Paleozoic Baltica platform, as a result of the collision between the paleo-continents Baltica and Laurentia. This Palaeozoic collisional orogen is nowadays exposed at mid-crustal levels, thus provides an excellent ground for in situ studies of mountain building processes. LÄS MER

3. 2. Pressure Temperature Conditions of the Otrøy Opmhacite-Garnet Gneiss, Western Gneiss Region, Skandinavian Caledonides

   Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Johanna Holmberg; [2015]
   Nyckelord :Western Gneiss Region; Otrøy; gneiss; ultrahigh-pressure metamorphism; Western Gneiss Region; Otrøy; gnejs; ultrahögtrycksmetamorfos;

   Sammanfattning : Garnet-omphacite gneisses from the island of Otrøy situated in Western Gneiss Region (WGR), Norway, Scandinavian Caledonides, were examined within this study. The WGR is one of the planets most studied ultrahigh-pressure (UHP) terranes. The studied gneisses are hosts for UHP garnet peridotites and eclogites. LÄS MER