Gardner Ja.E.; Thomas R.M.E.; Jaupart C.; Tait S.(1996)
The ratio of the volume of vesicles (gas) to that of glass (liquid) in pumice clasts (VG/VL) reflects the degassing and dynamic history experienced by a magma during an explosive eruption. VG/VL in pumices from a large ...
We propose that the fluid mechanics of magma chamber replenishment leads to a novel process whereby silicic magmas can acquire an important part of their chemical signatures. When flows of basaltic magma enter silicic magma ...