“Salt weld” describes a special structural contact formed after most or all of a salt layer has been withdrawn and the overlying and underlying strata come into close structural contact.
More information on this topic is available in the Martin P. A. Jackson section.
Where Does the Salt Go?
Because halite can flow ductilely, an originally continuous salt layer may migrate elsewhere.
Where salt is withdrawn, the layer can become extremely thin or disappear at seismic resolution.
Why a Weld Matters
A weld is indirect evidence that salt once occupied the contact and is important for reconstructing basin deformation history.
Strata that now appear juxtaposed may previously have been separated by mobile salt.
AGL Contribution
UT sources list salt weld among the central concepts introduced into modern salt-tectonics terminology by Martin Jackson and AGL.
The concept helps geologists reconstruct the history of salt that is no longer visibly present.
Sources
- UT Jackson School – Industrial Associates Program Turns 20
- Bureau of Economic Geology – In Memoriam: Martin P. A. Jackson
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