Page 8 - i1052-5173-28-2
P. 8
Figure 4. Schematic view of a
subduction zone between 35 and
85 km depth based on numerical
model results (and on study of
exhumed/exposed ophiolitic ter-
ranes) showing inferred morphol-
ogies and the detachment of
large folded slices of oceanic
lithosphere, accreted along the
plate interface (from Angiboust
et al., 2012b). This figure also
illustrates the main deformation-
enhanced fluid pathways (associ-
ated with deep serpentinite
producing/consuming reactions),
dominantly at the boundary
between materials with marked
rheological contrasts.
viewing on a computer screen. For com- aseismic ridges). AGEs: Mike 13. Geochemical and seismological
parison, Big Purple faced strict manuscript Underwood and Andy Fisher; expressions of deep subducted slabs.
length guidelines, authors did their own 3. Forces driving subduction—thermal AGEs: Catherine Chauvel and
formatting (following the old style of AGU and geodynamic modeling. AGE: Stéphane Rondenay;
journals), resulting in a fairly unpolished Taras Gerya;
appearance, publication of color graphics 4. Getting started (subduction initiation). 14. Backarc basins, cross chains, and
was expensive (and thus few authors pub- AGE: Mark Reagan; fold-and-thrust belts. AGEs: Fernando
lished color graphics), and we had a strict 5. Outer rise (slab bending, deep hydra- Martinez and Ron Hyndman;
time deadline in order to keep the book tion of slabs). AGEs: Doug Wiens,
publication project on schedule (resulting Cesar Ranero; 15. Resource implications. AGEs: Gray
in some authors ultimately not submitting 6. Shallow forearc dynamics (initial Bebout, Bob Stern, and Dave Scholl;
manuscripts). In the end, Big Purple con- dewatering and diagenesis, fluids,
tained 39 papers, varying greatly in length, accretion, erosion). AGE: Nathan 16. Crust formation at convergent mar-
with uneven coverage of the full range of Bangs; gins. AGEs: Kiyoshi Suyehiro and
top-to-bottom subduction science. 7. Deformation of and physical condi- Kent Condie; and
tions in the subduction interface from
For the all-electronic Geosphere themed the seismogenic zone through the 17. Convergent margin education and
issue, we have identified 17 subduction- source of episodic slow slip and outreach. AGE: Bob Stern.
zone science categories, arrayed as a func- tremor. AGEs: Shuichi Kodaira, Sue
tion of increasing depth in a subduction Bilek, and Samuel Angiboust; The Geosphere ST2B-2 themed issue can
zone, beginning with “What Goes In” and 8. Upper plate deformation over varying be accessed at https://pubs.geoscienceworld
“Forces Driving Subduction.” Each of timescales. AGEs: Frédérique Leclerc .org/geosphere/pages/st2b2. It is open to
these science categories has one to three and Nathalie Feuillet; ALL wishing to contribute to this effort.
assistant guest editors (AGEs) assigned to 9. Into the pressure cooker (metamor- Ideally, papers in the issue will cover each
identifying authors invited to contribute phism, fluid-rock interactions, records of the 17 topics, and we are optimistic that
manuscripts and be the contact individuals of deep underplating and exhumation, more than 100 papers will ultimately be
for those wanting to submit manuscripts. nature of deep subduction interface; published. We anticipate that submissions
The science categories (and the associated also including arc delamination and for the ST2B-2 themed issue will be
AGEs) are as follows—at the time of drips). AGEs: Sarah Penniston- accepted at the least through the end of
acceptance of this paper, Geosphere Dorland and Ake Fagereng; 2018, and we encourage anyone interested
ST2B-2 had amassed ~40 manuscripts in 10. Forearc to subarc mantle wedge. AGEs: in contributing to contact either one of the
various stages of review, revision, produc- Maureen Long and Marco Scambelluri; five guest editors (one of the five of us) or
tion, and publication. 11. Subduction zone magmatism (models the AGE(s) associated with the science
for evolution, petrology, geochemis- category into which you envision your con-
Outline of ST2B-2 Geosphere Themed try, and isotopes, including batho- tribution fitting.
Issue liths). AGE: Paul Wallace;
12. Explosive volcanism hazards. AGE: ACKNOWLEDGMENTS
1. Introduction; Bob Tilling;
2. What goes in (seafloor lithosphere We thank Shan de Silva, science editor of
Geosphere, for working with us to plan and
and sediment, seamounts, and coordinate the assembly of this themed issue.
Many thanks to reviewer Peter Kelemen for his
constructive input, particularly in the assembly of
the list of “Some Advances in Subduction Zone
Science in the Past 20 Years,” to the other,
8 GSA Today | February 2018
