Skip to content
LITHOEN

Geological event

Stillwater emplacement

The emplacement of the Stillwater Complex in Montana at about 2.7 billion years ago, along the structure now marked by the faulted front of the Beartooth Range in the Wyoming Province.

Classification

event kind
magmatic
timing resolution
geochronologicallyConstrained

How this record is known

1
Settled consensus
Cited as the accepted position of the discipline.

1 of 1 claims on this page cite at least one registered source. Counts describe how each statement is known, not how likely it is to be true.

What Lithoen records

Each claim states how it is known and cites its evidence.

Established2,700 Ma before present

The USGS stratiform chromite model dates the emplacement of the Stillwater Complex, along the structure now marked by the faulted front of the Beartooth Range to about 2.70 billion years ago.

Not stated verbatim by the source — derived: 2.7 Ga x 1000 Ma/Ga = 2700 Ma

The report gives ~2.7 Ga; Lithoen stores geologic ages in Ma. The conversion is exact; the tilde the report uses is preserved as an approximation in the claim wording.

  • method: Geochronology as reported by the USGS deposit model, which gives the age as approximate and does not state the method or the uncertainty.
  • precision note: An age for the event as the source gives it. What exactly was dated — the whole body, one phase of it, one mineral — is not stated, and Lithoen does not supply an answer.

Evidence support: Derived from the cited evidence one source

Evidence: Schulte 2012 Primary authority

In the knowledge graph

Record last updated 2026-09-07. Corrections follow the published corrections policy; superseded claims are retained, never silently edited.