intrusion
3
8.1
- noun
- /ɪnˈtruːʒən/
- Specialized
:
intrusión
- Seawater intrusion, in which ocean waters trickle into adjacent underground freshwater sources, has become a problem in southern California.
- saltwater intrusion
Examples
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Beneath this ridge is a solid granite intrusion.
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In many cases, this freshwater is threatened by saltwater intrusion from development that has reduced historical aquifer heads.
Academic text (2001) -
Horizontal drilling, as defined here, is a purposeful intrusion of the borehole into producing strata in a horizontal or nearly horizontal direction.
Academic text (1991) -
How will coastal ecosystems and human communities be affected by sea-level rise, storm surge, erosion, the intrusion of saltwater, and changes in the amount and variability of precipitation?
Academic text (2011) -
The Sudbury intrusion is a significant geological feature in the region's rock formations.
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Scientists discovered a large granite intrusion beneath the surface while drilling.
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The volcanic intrusion created unique mineral deposits in the surrounding rocks.
Compounds
- Specialized
Deliberately sending radio or electrical signals into communication systems to confuse people using them
How Large
Surface Forms
Morphology
Etymology
Intrusion comes from Latin parts in- 'into' and trudere 'to push', the same root as intrude and like the common word thrust. That's why a geological intrusion is molten rock being 'pushed into' older rock layers.