Sökning: "crustal gases"

Hittade 2 uppsatser innehållade orden crustal gases.

1. 1. Constraining Crustal Volatile Release in Magmatic Conduits by Synchrotron X-ray μ-CT

   Master-uppsats, Berggrundsgeologi

   Författare :Sylvia Berg; [2011]
   Nyckelord :xenoliths; crustal gases; synchrotron X-ray μ-CT; 3D-bubble networks; gas migration; magmatic volatile budget; explosive eruption;

   Sammanfattning : Magma-crust interaction in magma reservoirs and conduits is a crucial process during magma evolution and ascent. This interaction is recorded by crustal xenoliths that frequently show partial melting, inflation and disintegration textures. LÄS MER

3. 2. Disintegration and Devolatilisation of Sandstone Xenolith in Magmatic Conduits: an Experimental Approach

   Kandidat-uppsats, Berggrundsgeologi

   Författare :Sylvia Berg; [2010]
   Nyckelord :xenolith; melting; bubbles; gas migration; crustal volatiles; magma-crust interaction; magma volatile budget; explosive eruption;

   Sammanfattning : Xenoliths preserve evidence of magma-crust interactions in magmatic reservoirs and conduits. They reveal processes of partial melting of country rock, and disintegration into magma. Widespread evidence for frothy xenoliths in volcanic deposits exists, and these evidently indicate processes of gas liberation, bubble nucleation and bubble growth. LÄS MER