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Glite Dictionary
🪨 Oldest layer below 🌊 Sum of effects
principle of superposition

principle of superposition

7.7
A rule that in rock layers left in place the bottom layer is oldest
  • noun
  • /ˈprɪnsəpəl əv ˌsuːpərpəˈzɪʃən/
  • Specialized
translation icon : principio de superposición
  • The principle of superposition is fundamental in geology.

Examples

  • In geology, the principle of superposition states that the lowest sedimentary rock layer is the oldest.

  • According to the principle of superposition, older layers lie beneath younger ones.

  • By applying the principle of superposition, scientists can reconstruct the sequence of geologic events.

  • The principle of superposition helps geologists determine the relative ages of sedimentary rock layers.

  • The discovery of the principle of superposition was crucial for understanding Earth's history.

  • Understanding the principle of superposition helps geologists determine the relative ages of rock layers.

  • The scientist explained that the principle of superposition means each layer of rock is younger than the one below it.

Synonyms

superposition principle
vsprinciple of superposition
  • Specialized
7.7

The lowest layer in a series of rock layers is the oldest

is the same idea but uses a different word order in the name
superposition
vsprinciple of superposition
  • Specialized
8.6

A rule that rock layers have the oldest at the bottom and newer ones above

is the full phrase form rather than the single word term

Surface Forms

principle of superposition singular
principles of superposition plural

Morphology

principle + of + superposition

The structure 'principle of X' is directly compositional: it denotes a rule or law concerning X, so a learner who knows 'principle' and 'superposition' can infer that this is the governing rule about superposition. Although 'superposition' is a technical term whose specific scientific senses may be specialized, the overall meaning of the noun phrase is transparently derived from its constituents and parallels equivalent constructions in other languages.

Etymology

Principle of superposition comes from the simple picture of layers of earth stacked one on top of another: the bottom layer was laid down first and is therefore 'oldest', with each layer above 'younger'. So geologists use it to tell which rock layers are older or younger.