Reading the map: a beginner's guide to legend icons and line styles
When you first open an interactive shale map, the sheer number of symbols, colours, and line styles can feel overwhelming. The legend is the key that unlocks every layer of information, but it only helps if you know how to read it. This guide walks through the most common icons and line types on Shale Navigator, so a brand-new user in Sydney, Melbourne, or anywhere else can interpret the map with confidence.
Australian energy professionals often track US shale activity because of the link between American LNG supply and Asia-Pacific gas markets out of Gladstone and the Pilbara. Understanding a US-focused platform like Shale Navigator is also useful for ASX-listed juniors evaluating international opportunities, or for investors comparing basins such as the Marcellus with the Cooper or Canning back home. A clear grasp of the legend turns raw map data into decisions that matter.
Getting started with the legend panel
The legend panel sits to one side of the main map view and can be toggled on or off depending on your screen size. Each tick box corresponds to a different data layer, including shale plays, drilling permits, lease offers, pipelines, available mineral rights, and property parcels. When you click a layer, its icons and lines become visible on the map; when you untick it, those features fade back to a neutral background.
For users in Brisbane or Perth who often work across multiple time zones, the panel's collapsible design helps when sharing a screen during a video call with US-based counterparts. Hiding layers you do not need keeps the view clean and reduces the cognitive load of looking at hundreds of overlapping symbols at once. Treat the legend as a living checklist rather than a static reference card.
Reading point icons for wells and permits
Point icons mark specific geographic features, and each shape conveys a different meaning. Filled circles often represent existing wellheads, while hollow or ringed circles can indicate permitted-but-undrilled locations. Star or diamond shapes are sometimes used to highlight horizontal laterals, which are particularly important in plays like the Marcellus and the Permian.
Colour fills within those shapes usually reflect status, depth, or operator class. A green dot might signal an active producing well, whereas a grey dot suggests an abandoned or plugged site. The legend includes a small swatch panel beside each icon so you can match colours without guessing. Taking a minute to memorise the half-dozen most common symbols saves hours of repeated cross-checking later.
Understanding line styles for pipelines and infrastructure
Lines on the map are not all created equal, and the legend treats solid, dashed, and dotted strokes as distinct categories. Solid lines generally represent operational pipelines carrying natural gas or NGLs from wellhead to processing facility. Dashed lines often show proposed or under-construction routes, while dotted lines can indicate gathering systems that connect multiple wells to a single trunk line.
Thickness is another clue. A bold line usually signals a major transmission pipeline with high throughput, whereas thinner lines tend to be smaller laterals. Colour can denote commodity: blue for natural gas, yellow for oil, and sometimes red for CO₂ or hydrogen-ready infrastructure. Australian analysts watching the global LNG trade from Gladstone will recognise how these distinctions matter when modelling capacity or supply risk.
Decoding boundary symbols and mineral rights markers
Polygons and outline shapes define parcels, lease boundaries, and section lines inherited from the US Public Land Survey System. Solid thin outlines typically mark surveyed sections, while thicker coloured fills represent active leases. A patterned fill, such as diagonal hatching, can indicate a lease offer that has not yet closed, or a parcel where mineral rights are partially severed from surface rights.
The legend also includes small flag or pin icons for royalty interests, overriding royalty owners, and available mineral rights listings. Each variant carries a short text label, and hovering over an icon on the map often reveals an expanded tooltip with ownership percentages and lease dates. This is where the legend becomes a true data dictionary rather than a simple key.
Customising layer visibility and colour coding
Most users only need a subset of layers at any given moment, and the platform lets you switch groups on and off independently. Combining the pipelines and lease offers layers produces a useful overlay for siting decisions, while turning on permits and mineral rights together supports due-diligence work for an investor based in Adelaide or a landman working remotely from Hobart.
Colour coding is customisable for several layers, which helps when you want to highlight operators, formation depth, or commodity type. The legend updates automatically to reflect your choices, so it remains a reliable reference throughout your session. If you find a particular combination useful, save it as a preset so you can return to the same view with a single click the next morning.
Putting it all together in a practical workflow
A practical workflow usually begins with the broadest layer enabled, such as shale plays shaded by basin. From there, drilling permits are added to show recent activity, followed by pipelines to highlight takeaway capacity. Mineral rights and lease offers come last, providing the granular detail needed for acquisition or evaluation work.
Once the layers are stacked in that order, you can use the legend as a checklist to confirm each visual element is doing its job. Users based in Western Australia often run this sequence during early-morning calls with Houston or Pittsburgh, where many of the largest operators are headquartered. A disciplined approach to the legend turns the map from a pretty picture into a working analytical tool.
The fastest way to build confidence with the legend is to log in and explore the layers yourself. The full data store includes sample datasets you can load without committing to a paid plan, and the about the platform page explains how the data is sourced and updated. When you are comfortable with the basics, you can create a free account to unlock the complete toolset and start building your own custom views today.