Figures & Tables (epsl-figures-and-tables)
In a letters-format paper the figures are the argument: with a main text near 6,500 words (re-check
the cap on the official site), EPSL papers typically carry a small number of dense, layered exhibits
plus a supplement. The venue-specific pressures are cross-disciplinary legibility — your map will be
read by someone who has never worked in that orogen — and uncertainty made visible, because the
sub-fields EPSL serves treat an error-free plot as a red flag.
When to trigger
- Deciding which few exhibits carry the Letter and what moves to the supplement
- Drafting location maps, cross-sections, isotope plots, tomography slices, or phase diagrams
- A reviewer called an exhibit unreadable, missing context, or missing uncertainties
- Preparing figure files for Editorial Manager upload
Principles
-
Ration the slots. Every main-text figure must advance the argument; reference-quality material
(all spectra, all sections, parameter sweeps) belongs in the supplementary material.
-
Context panel first. Earth-science readers orient spatially: give a location/tectonic-setting
inset with coordinates, scale, and the geodetic datum or projection named; planetary figures give
the body, region, and data source (mission/instrument).
-
Uncertainty is drawn, not asserted. Error ellipses on concordia, error bars sized to the stated
σ-level, credible envelopes on age models, damping/resolution shading on inversions.
-
Sub-field conventions, executed exactly. Concordia and isochron plots labeled with MSWD and n;
stratigraphic columns with height and stage boundaries; seismic sections with depth scales and
vertical exaggeration stated; phase diagrams with the calibration source.
-
Color that survives review. Perceptually uniform colormaps for continuous fields (avoid
rainbow/jet — the geophysics community actively campaigns against it), colorblind-safe categorical
palettes, grayscale-legible line work; vector formats for line art.
-
Tables carry data, figures carry claims. Full analytical tables (every analysis, every
correction) go to the supplement and repository; the main text carries at most a compact summary
table.
Exhibit choices by sub-field
| Result type |
The load-bearing exhibit |
Non-negotiable elements |
| Geochronology |
concordia / weighted-mean plot |
ellipses at stated σ, MSWD, n-of-N, excluded grains visible |
| Isotope tracing |
covariation (x–y) plot with mixing/evolution curves |
endmember values sourced, 2σ bars, sample symbols by group |
| Seismic structure |
depth slice + cross-section |
colorbar units, resolution overlay, no rainbow |
| Geodynamic model |
time-series snapshots + regime diagram |
parameter values, dimensionless numbers, benchmark noted |
| Paleo-record |
proxy vs age with age model envelope |
tie points marked, stage boundaries labeled |
| Planetary |
mapped observable + interior model |
mission/instrument, datum, uncertainty band |
Worked micro-example (illustrative — one figure carrying a slab-fluid argument)
The subduction-water Letter needs geochemistry and seismology in one exhibit (illustrative):
-
Panel a: arc transect map with sample sites, trench, slab-depth contours, and the tomographic
section line — the seismologist's context and the geochemist's sampling frame in one panel.
-
Panel b: δ11B vs distance-to-trench with 2σ bars and model curves for shallow vs deep
dehydration — the discriminating plot.
-
Panel c: velocity cross-section (perceptually uniform colormap) with the low-velocity conduit
and a resolution-test inset showing the feature is not smearing.
One three-panel figure replaces three single-discipline figures and makes the joint argument
inspectable at a glance — the letters-format ideal.
Referee-pushback patterns and the venue-specific fix
-
"Ellipses/error bars missing or undefined." → Draw them at a stated σ-level on every isotope and
age plot; define once in the caption.
-
"I can't locate the samples." → Add the context inset with coordinates, scale, projection.
-
"The colormap manufactures structure." → Replace jet/rainbow with a perceptually uniform map and
re-examine which "anomalies" survive.
Anti-patterns
- A main text bloated with every supporting plot while the one discriminating figure is missing
- Maps without scale, coordinates, or projection; sections without depth units or exaggeration
- Age plots without MSWD, n, or the excluded analyses
- Rainbow colormaps on tomography or gridded fields
- Full 400-row analytical tables typeset in the main text instead of deposited
- Captions that name the panel but not the σ-level, model, or data source
Output format
【Main exhibits】list + the claim each carries
【Context】location/setting panel with datum + scale? [Y/N]
【Uncertainty drawn】ellipses/bars/envelopes at stated σ? [Y/N]
【Conventions】sub-field norms met (MSWD, resolution overlay, ...)? [Y/N]
【Color/format】perceptually uniform + colorblind-safe + vector? [Y/N]
【Main vs supplement】split decided
【Next】epsl-reporting-and-reproducibility
Supplementary resources
