Smith's laws¶

In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession.

Version: v1 · 2026-09-28 · History
Domain-specific #: 12096
Domain group: Natural Sciences
Origin domain: Geology & Earth Sciences
Subdomains: Stratigraphy, Biostratigraphy → Geology & Earth Sciences

Core Idea¶

Smith's laws is treated here as the recurring stratigraphy identity summarized by this source-grounded definition: In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession.

In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. They are fundamental to the production of geological maps. This can be caused by folding that is so severe that the beds are moved past the perpendicular.

This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. Smith's laws are still basic to the production of modern geological maps (Jackson, p. Smith's first law is the Principle of Superposition.

For Smith's laws, the abstraction is narrower than the article's general subject matter: a positive case must preserve In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. Retaining only the name, a familiar example, or a downstream effect is insufficient. The specialist roles and tests remain anchored in stratigraphy, which is why this identity is domain-specific rather than prime.

Structural Signature¶

Sig role-phrases:

Defining carrier — Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819.
Constitutive relation — This can be caused by folding that is so severe that the beds are moved past the perpendicular.
Operating condition — Beds can also be put out of order by an overthrust thrust fault (Jackson, p.
Recognition evidence — This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p.
Admissible variation — Smith's map of England and Wales was extensively plagiarised by others, starting with George Bellas Greenough in 1819 (Winchester, pp.
Characteristic consequence — Overturning of the beds causes the succession order to be reversed.
Failure boundary — Smith's second law is the Law of Strata identified by fossils.

What It Is Not¶

Not the whole field of stratigraphy. The node requires the specific identity stated by In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession.
Not an over-broad reading. This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p.
Not an over-broad reading. Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819.
Not an over-broad reading. This states that newer rock beds will lie on top of older rock beds unless the succession has been overturned.
Not automatically Succession (geology). Retrieval proximity does not establish equivalence; the two identities must be compared by carrier, operation, and failure boundary.

Scope of Application¶

Smith's laws applies literally inside stratigraphy wherever the source-defined carrier and relation can be established. Its documented habitats include:

Smith's first law. This can be caused by folding that is so severe that the beds are moved past the perpendicular.
Smith's second law. This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p.
Geological mapping. Smith used these new techniques, together with knowledge he had accumulated as a canal engineer and mineral surveyor, to produce geological maps.
The laws. Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819.
Smith's first law. This states that newer rock beds will lie on top of older rock beds unless the succession has been overturned.
Smith's first law. Beds can also be put out of order by an overthrust thrust fault (Jackson, p.

Outside stratigraphy, the name should be retained only when these same operational conditions survive; otherwise the comparison belongs to the broader parent Pattern or should be marked as analogy.

Clarity¶

A clear use of Smith's laws names the carrier, the operative relation, and the conditions under which the source treats the identity as present. The minimal definition is In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. The strongest recognition evidence in the frozen account is: This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. A report should distinguish that evidence from a proxy, consequence, or common implementation. It should also state the qualification This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. so that a reader can reproduce the classification rather than infer it from topical resemblance.

Manages Complexity¶

Smith's laws compresses multiple stratigraphy details into a stable diagnostic relation. The source shows both the central mechanism—this can be caused by folding that is so severe that the beds are moved past the perpendicular.—and the practical consequence—overturning of the beds causes the succession order to be reversed. This compression makes cases comparable while leaving parameters, conventions, exceptions, and evidential quality explicit. It is lossy by design: local history and implementation details may be omitted only when they do not alter the defining relation.

Abstract Reasoning¶

Type the carrier. Identify the stratigraphy entities to which the claim applies.
State the relation. Use the source-grounded identity: In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession.
Check operation and conditions. Beds can also be put out of order by an overthrust thrust fault (Jackson, p.
Demand recognition evidence. This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p.
Test variation. Change an implementation or setting while preserving smith's map of England and Wales was extensively plagiarised by others, starting with George Bellas Greenough in 1819 (Winchester, pp.
Run the collapse test. Remove the defining operation; if the label still seems equally apt, only a topic or correlate was retained.
Reduce cautiously. When the specialist conditions cannot be carried, route the residual comparison to Pattern.

Knowledge Transfer¶

Within the home domain. Knowledge about Smith's laws transfers literally when a new case preserves the same carrier type, relation, and recognition test. This can be caused by folding that is so severe that the beds are moved past the perpendicular. This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p.

Beyond the home domain. No canonical parent is asserted for Smith's laws. An outside case receives the specialist name only when the same typed roles and rejection conditions can be filled literally; otherwise the comparison remains an analogy pending later graph densification.

Examples¶

Canonical¶

Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819. This case is canonical because it supplies a concrete carrier and lets the defining relation be checked rather than merely named.

Mapped back: carrier → the entities in the documented case; operation → In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession; recognition evidence → This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p

Applied / In Practice¶

This states that newer rock beds will lie on top of older rock beds unless the succession has been overturned. The applied case shows how the identity is used under a second setting or qualification while keeping the same operative relation.

Mapped back: changed setting → Smith's first law; invariant → In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession; boundary → the case exits the class when this law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p

Structural Tensions¶

T1 — Stable identity versus admissible variation. This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. The tension matters because emphasizing only one side either dissolves the identity or overstates what the evidence and domain conventions warrant.

Diagnostic: Which changes preserve the defining relation, and which replace it?

T2 — Recognition versus proxy. Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819. The tension matters because emphasizing only one side either dissolves the identity or overstates what the evidence and domain conventions warrant.

Diagnostic: Does the cited evidence establish the identity or only a correlated sign?

T3 — Definition versus implementation. This states that newer rock beds will lie on top of older rock beds unless the succession has been overturned. The tension matters because emphasizing only one side either dissolves the identity or overstates what the evidence and domain conventions warrant.

Diagnostic: Is the observed implementation constitutive, optional, or merely common?

T4 — Scope versus overextension. This can be caused by folding that is so severe that the beds are moved past the perpendicular. The tension matters because emphasizing only one side either dissolves the identity or overstates what the evidence and domain conventions warrant.

Diagnostic: Can every claimed application fill the same typed roles without metaphor?

T5 — Transfer versus domain accent. Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819. The tension matters because emphasizing only one side either dissolves the identity or overstates what the evidence and domain conventions warrant.

Diagnostic: Does the receiving case instantiate Smith's laws literally, co-instantiate Pattern, or only resemble it?

T6 — Autonomy versus reduction. This can be caused by folding that is so severe that the beds are moved past the perpendicular. The tension matters because emphasizing only one side either dissolves the identity or overstates what the evidence and domain conventions warrant.

Diagnostic: What does Smith's laws distinguish that the broader parent Pattern leaves together?

Terminal boundary synthesis. For Smith's laws, the terminal identity test begins with the definition In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession.. A reviewer must then establish the carrier and operation described by Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819. and This can be caused by folding that is so severe that the beds are moved past the perpendicular.. Recognition is constrained by Beds can also be put out of order by an overthrust thrust fault (Jackson, p., while admissible variation is limited by This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. and the collapse boundary Smith's map of England and Wales was extensively plagiarised by others, starting with George Bellas Greenough in 1819 (Winchester, pp.. The source-domain setting in stratigraphy matters because This can be caused by folding that is so severe that the beds are moved past the perpendicular. and This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. specify where those roles have literal occupants. The strongest negative controls are The node requires the specific identity stated by In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. and This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p.; a case satisfying either exclusion should not be rescued merely because its label or examples look familiar.

Terminal adjudication sequence. First, bind the claimed instance to a concrete carrier and state the criterion by which In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. is recognized. Second, vary implementation, scale, notation, and example while holding This can be caused by folding that is so severe that the beds are moved past the perpendicular. fixed; persistence supports one identity rather than several topic fragments. Third, remove Beds can also be put out of order by an overthrust thrust fault (Jackson, p. or trigger Smith's map of England and Wales was extensively plagiarised by others, starting with George Bellas Greenough in 1819 (Winchester, pp. and verify that the classification fails. Fourth, compare the result with the two negative controls instead of relying on name similarity. Fifth, check scope against This can be caused by folding that is so severe that the beds are moved past the perpendicular. and record any qualification supplied by stratigraphy. Finally, audit the graph claim. The approved unparented placement prevents a weak lexical resemblance from becoming a false ontological claim; a later edge must preserve every constitutive role stated here. This sequence makes the entry rejectable, keeps analogy separate from literal transfer, and exposes which fact would require revision.

Counterfactual boundary matrix. Evaluate Smith's laws under four controlled substitutions. In the carrier substitution, replace the concrete entities while retaining Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819.; the identity should persist only if the new carrier has the same operative type. In the operation substitution, replace This can be caused by folding that is so severe that the beds are moved past the perpendicular. while preserving surface vocabulary; the identity should fail unless the replacement entails the same relation. In the evidence substitution, change the instrument, representation, or witness used for Beds can also be put out of order by an overthrust thrust fault (Jackson, p.; classification may persist when the new evidence warrants the same fact. In the scope substitution, move the case outside This can be caused by folding that is so severe that the beds are moved past the perpendicular. and ask whether This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. still gives the roles literal occupants. These four tests separate constitutive structure from implementation, evidence, and familiar examples. They also identify the exact revision needed when a source expands or narrows the recognized class.

Neighbor and residual test. The negative controls The node requires the specific identity stated by In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. and This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. define two directions of possible overreach. A reviewer should construct one case that satisfies the first control but not Smith's laws, one that satisfies Smith's laws but not the control, and the corresponding pair for the second control. If no such asymmetric pair can be stated, the candidate may duplicate a neighbor or the distinction may depend only on wording. When the specialist identity fails but a thinner relation remains, record that residual separately instead of stretching Smith's laws. The approved unparented placement prevents a weak lexical resemblance from becoming a false ontological claim; a later edge must preserve every constitutive role stated here. The resulting decision trail makes later DAG densification possible without treating today's uncertainty as a hierarchy fact.

Structural–Framed Character¶

Smith's laws is mixed or framed-leaning. Its structural side is the repeatable organization summarized by In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. Its framed side is the stratigraphy vocabulary that fixes the carrier, evidence, exceptions, and admissible transformations.

Evaluative weight: the identity can be stated descriptively even when applications carry practical stakes. Human-practice dependence: the source-grounded carrier determines whether the relation exists independently or is constituted by a practice. Institutional origin: disciplinary conventions stabilize the name and test. Vocabulary portability: Beds can also be put out of order by an overthrust thrust fault (Jackson, p. Import versus recognition: literal transfer requires the same mechanism; shape alone is analogy.

Its portable skeleton is Pattern. Its character: a recurring specialist identity whose thin organization can be abstracted, while its operational meaning remains domain-bound.

Structural Core vs. Domain Accent¶

What is skeletal. In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. The stable skeleton is the typed relation expressed in that definition and the entry's recognition and collapse tests. The source identifies these operative conditions: Both laws were first published by Smith in Strata Identified by Fossils, 1816–1819. This can be caused by folding that is so severe that the beds are moved past the perpendicular. It further constrains recognition and variation through: Beds can also be put out of order by an overthrust thrust fault (Jackson, p. This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p.

What is domain-bound. stratigraphy supplies the operative entities, technical vocabulary, warrants, and exceptions that make Smith's laws literal. Its documented scope includes the condition that This can be caused by folding that is so severe that the beds are moved past the perpendicular. Another bounded application condition is that This law allows beds to be identified as belonging to the same stratum even when the horizon between them is not continuous (Jackson, p. These are not decorative examples; they determine which carrier and evidence can fill the abstraction's roles.

Why no parent is asserted. Removing those specialist details does not currently yield one live catalog node that is a necessary genus for every instance. The entry is therefore approved as unparented rather than attached by topical resemblance. Its collapse evidence remains specific—Smith's map of England and Wales was extensively plagiarised by others, starting with George Bellas Greenough in 1819 (Winchester, pp.—and future graph densification may discover a defensible relation only if it preserves that boundary.

Approved unparented node. No current live node supplies a defensible necessary genus or structural prerequisite for Smith's laws. The reviewed identity is: In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession. The accelerated suggestion was declined because topical or lexical similarity does not establish hierarchy; the node is admitted without a parent pending later graph densification.
Related reasoning operations. Evidence, representation, comparison, classification, transformation, or evaluation may participate in particular cases, but participation does not make any one of them a necessary parent of every instance.

Neighborhood in Abstraction Space¶

Smith's laws sits in a sparse region of the domain-specific corpus (63^rd percentile for distinctiveness): few abstractions share its structure, so a faithful description tends to retrieve it precisely.

Family — Unclustered & Miscellaneous (2551 abstractions)

Nearest neighbors

Computed from structural-signature embeddings · 2026-10-08

Not to Be Confused With¶

Pattern. The parent omits the specialist differentia. Tell: Can the case establish In geology, Smith's laws are two rules, formulated by William Smith (1769–1839), which aid in the determination of geological succession?
Succession (geology). Geology. Tell: Which entry's carrier, operation, and failure condition are satisfied?
Occupatio. A Roman-law mode of original acquisition by taking possession of an ownerless thing with intent to own it. Tell: Which entry's carrier, operation, and failure condition are satisfied?
Tychism. Charles S. Peirce’s metaphysical doctrine that objective chance is irreducible and active in the evolution of laws and the universe. Tell: Which entry's carrier, operation, and failure condition are satisfied?
A measurement, proxy, or consequence. Those may provide evidence without being the identity. Tell: Would Smith's laws remain present if the detector or downstream effect changed?
A metaphorical analogue. A similar shape outside stratigraphy lacks the specialist mechanism. Tell: Do the native roles transfer literally, or only the parent Pattern?

References¶

Frozen Wikipedia discovery revision: https://en.wikipedia.org/wiki/Smith%27s_laws (revision 1351637782).
Preserved source candidate: https://archive.org/stream/strataidentifie01smitgoog#page/n6

The frozen Wikipedia revision is discovery provenance. The retained source set was reviewed for identity, formal or operational relation, and scope. The encyclopedia's structural synthesis is bounded to those claims; a thin authority surface is recorded as a nonblocking source-strengthening repair rather than concealed.