Read strata in ManYue: separate deposition order from cross-cutting events

A science-comic cross-section cannot rank every shape simply by lower is older. Read a defined strata diagram in ManYue, identifying sedimentary layers and cutting bodies before keeping a relative-event ledger. This is fictional-diagram reading, not field investigation, real hazard assessment or automatic rock identification and dating.

Establish the explanatory diagram and assumptions

Record work, edition, page, title and legend. The original example explicitly has non-overturned sedimentary layers Jia, Yi and Bing from bottom to top, later intrusion Ding cutting all three, and fault Wu cutting both layers and Ding. These are stated relationships, not lithologies inferred from vivid colour or heavy lines. A distant cliff without structural information supports visible bands, not this complete sequence. Perspective, occlusion and later colouring do not establish the required geological conditions.

Apply superposition within the stated sequence

Within the stated non-overturned sedimentary sequence, Jia predates Yi and Yi predates Bing. This does not make every object low in the picture older: a later intrusion may extend downward without becoming the earliest event. If overturning, displacement or repeated beds is specified, reassess the structure rather than applying the simple order unconditionally. Relative sequence also supplies no number of years, constant deposition rate or continuous history. Keep time intervals unknown.

An intrusion postdates the units it cuts

Ding explicitly cuts Jia, Yi and Bing, so all three predate the intrusion. Record which units it cuts rather than saying Ding is in the middle: that is position, not age. A narrow shape is not automatically an intrusion; the legend or contacts must support it, as stipulated here. A body merely lying above Bing or having unclear contacts does not support the same conclusion. An unshown extension also does not prove absence of cutting; distinguish not depicted from explicitly not cut.

Add the fault through its cutting relationships

Wu offsets both the layers and Ding, placing Ding before Wu and producing the stated order Jia, Yi, Bing, Ding, Wu. A fault displaces existing objects; extending downward does not make it older than Jia. In a control where Wu cuts the layers but its relation to Ding is unspecified, both postdate Bing but their mutual order may remain unknown. Retain a partial order instead of inventing a crossing to obtain one neat timeline. Real faults can have multiple episodes; this original example stipulates only one event.

Do not convert relative order into years

Five ordered events supply neither numeric ages nor equal intervals. Without dating evidence or other constraints, do not assign Ding a million-year age or infer duration directly from layer thickness. A character calling something ancient is textual evidence, not numerical dating. Use earlier, later and undetermined explicitly. If a later passage provides a numeric age, record its source and dated object separately rather than assigning one rock’s age to every layer or the whole setting.

Change one relation to expose dependence

For an external control change one relation: Ding cuts only Jia and Yi, and Bing later deposits across and seals Ding’s top, explicitly stated rather than merely omitted from the drawing. Ding then postdates Yi but predates Bing, unlike the main example. Retain the sealing-deposition condition; failure to draw Ding inside Bing alone is insufficient. Label the control as personal, not a contradiction in the work. It demonstrates reliance on contacts and formation relations, not shape or colour. Without the extra condition, Ding versus Bing may remain unresolved.

Check unit identities and arrow targets

If relations conflict, inspect the whole legend: does a colour denote the same unit, does an arrow point to the fault or an adjacent dike, and are locations or stages combined? An annotation line is not a crack, and an exaggerated comic section predicts no real collapse. Zoom helps read existing labels but cannot restore a cropped legend. When seeking help, provide location, copied relations and the first conflict, not the entire comic. A numbered personal sketch assists explanation but cannot prove that a tidier redrawing matches the original evidence.

Leave and return to rebuild order and uncertainty

Leave reading and return to the main diagram. Rebuild the order from superposition, Ding cutting three layers and Wu cutting Ding, then repeat the control with unspecified Ding–Wu order. Retain diagram identity, structural assumptions, each cutting or sealing relation, the relative chain, unknown relations and absence of numeric ages. Every ordering must have evidence rather than a memorised label list. This adds geological event relations to ordinary cutaway reading without claiming automatic dating, real-site analysis or effortless interpretation of overturned strata.

Related guides and sources

ManYue cutaway scenes: distinguish explanatory layers from transparent objects; ManYue: Separate changed conditions, visible results and causal claims in an experiment scene.

Checked on November 12, 2026: Apple public information lists ManYue 2.0.5, requiring iOS / iPadOS 15.0 or later. See the official App Store for published capabilities; verify specific controls in the installed version.

Method reference: US National Park Service: superposition and cross-cutting principles. Samples, passages and controls are original exercises. Sources establish definitions and checking methods rather than new automatic analysis in the app. Manual records may be kept externally, and unknown fields should remain explicit. This article does not claim step-by-step testing on a physical device, private server or every output environment.