Essays about: "magma chamber"

Showing result 1 - 5 of 12 essays containing the words magma chamber.

1. 1. Syn-Magmatic Deformation Structures in the Slaufrudalur Pluton, East Iceland

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Chun Hei Ho; [2023]
   Keywords : Granite; Iceland; magma chamber; magmatic microstructure; melt fraction; mush; pluton; rheology; strain; syn-magmatic deformation;

   Abstract : Structures and deformation mechanisms of magmatic rocks are controlled by rheology. An increase in melt fraction can weaken a rock body and localises significant amount of strain. This interplay between rheology, melting and deformation in a magma reservoir, however, is not always clearly documented in literature. READ MORE

3. 2. Magma Mixing and ReplenishmentBeneath Laurens Peninsula, Heard Island

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Ransom Telson; [2022]
   Keywords : Heard Island; Laurens Peninsula; crystal size distribution; magma replenishment; Heard Island; Laurens halvön; kristallstorleksfördelning; magmablandning; påfyllning;

   Abstract : Heard Island is a remote Australian territory which lies in the South-middle sector of the Indian Ocean.The island lies in the central province of the Kerguelen Plateau. On the north-western face of the islandlies the Laurens Peninsula, where modern volcanism has been periodic since approximately 10 ka, butno eruption has been recorded. READ MORE

4. 3. Major and trace element geochemical analysis of norites in the Hakefjorden Complex to constrain magma source and magma plumbing systems

   University essay from Lunds universitet/Geologiska institutionen

   Author : Aodhan Barrett; [2020]
   Keywords : Anorthosite; norite; Plagioclase; Hakefjorden Complex; Sweden; Trace Elements; Geochemistry; Magma Origin; Earth and Environmental Sciences;

   Abstract : Major and trace element data taken from plagioclase crystals from anorthosites and related rock units in the Hakefjorden Complex located off the west coast of Sweden were investigated for the purposes of constraining magma chamber processes and the source of the magma. Although the anorthosite units were completely homogenous in regards to its chemistry, the plagioclase in the associated norite and ilmenite-leuconorite units showed substantial variation. READ MORE

5. 4. The Crystal Size Distribution of Cerro Bayo

   University essay from Uppsala universitet/Mineralogi, petrologi och tektonik

   Author : Elin Kuylenstierna; [2018]
   Keywords : Crystal Size Distribution CSD ; magma chamber; igneous rock texture; Kristallstorleksfördelning CSD ; magmakammare; magmatisk bergartstruktur;

   Abstract : To understand the complex structure of magmatic plumbing systems beneath volcanoes, one needs to study the different textures shown in the igneous rocks produced by the volcano in question. By doing this, one can get a clue of the processes that resulted in the final rock. READ MORE

6. 5. Magmatic Sources and Processes Recorded by the Volcanics from the Izu Bonin Rear Arc

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : John Owen Edgar; [2017]
   Keywords : Izu-Bonin; plagioclase; magma; strontium; thermobarometry; rear arc; Izu-Bonin; plagioklas; magma; strontium; termobarometri; bakbåge;

   Abstract : The Izu rear-arc volcanism was investigated by IODP EXP350 in spring 2014. A total stratigraphy of1800 m was drilled, and contains volcaniclastic material within tuffaceous mudstone. READ MORE