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Unformatted text preview: l Alkaline
Kimberlites Figure 19.19. Model of an idealized kimberlite system,
illustrating the hypabyssal dike-sill complex leading
to a diatreme and tuff ring explosive crater. This
model is not to scale, as the diatreme portion is
expanded to illustrate it better. From Mitchell (1986)
Kimberlites: Mineralogy, Geochemistry, and Petrology.
Plenum. New York. Winter (2001) An Introduction to
Igneous and Metamorphic Petrology. Prentice Hall. Wednesday, 15 August, 12 Oxygen Isotopes of Earth Materials Mantle δ18O very
restricted! Wednesday, 15 August, 12 Sea floor alteration (Oxygen exchange, biogenic C added) (Nat Geog)
Wednesday, 15 August, 12 Island Arc Petrogenesis
Figure 16-11b. A proposed
model for subduction zone
magmatism with particular
reference to island arcs.
Dehydration of slab crust
causes hydration of the
mantle (violet), which
undergoes partial melting as
amphibole (A) and
phlogopite (B) dehydrate.
From Tatsumi (1989), J.
Geophys. Res., 94, 4697-4707
and Tatsumi and Eggins
(1995). Subduction Zone
Oxford. Wednesday, 15 August, 12 From Helmstaedt et al. (2010) Wednesday, 15 August, 12 From Shulze et al.
(2003) Wednesday, 15 August, 12 Summary • Stable isotopes: deﬁnitions, terminology and
notation. • H and O-isotopes - mostly for tracing ﬂuids and
ﬂuid-rock related processes. • Sources of ﬂuids - variations as a function of
latitude and altitude and source regions. • Fluid-rock interaction. Wednesday, 15 August, 12...
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This document was uploaded on 03/06/2014 for the course ES 4502 at Memorial University.
- Fall '12
- The Land