• Source: Monocline

A monocline (or, rarely, a monoform) is a step-like fold in rock strata consisting of a zone of steeper dip within an otherwise horizontal or gently dipping sequence.




Formation



Monoclines may be formed in several different ways (see diagram)

By differential compaction over an underlying structure, particularly a large fault at the edge of a basin due to the greater compactibility of the basin fill, the amplitude of the fold will die out gradually upwards.
By mild reactivation of an earlier extensional fault during a phase of inversion causing folding in the overlying sequence.
As a form of fault propagation fold during upward propagation of an extensional fault in basement into an overlying cover sequence.
As a form of fault propagation fold during upward propagation of a reverse fault in basement into an overlying cover sequence.




Examples


Waterpocket Fold in Capitol Reef National Park, Utah
Comb Ridge in southern Utah
Grandview-Phantom Monocline in Grand Canyon, Arizona
Grand Hogback in Colorado
Lebombo Mountains in Southern Africa
Lapstone Monocline in the Blue Mountains (Australia)
Beaumaris Monocline in Victoria (Australia)
Purbeck Monocline on the Isle of Purbeck, Dorset, England
Fore-Sudetic Monocline, Poland
Sindh Monocline, Pakistan
Torres Flexure, southern Brazil




See also


Anticline
Homocline
Syncline




References

Kata Kunci Pencarian:

• Lipatan (geologi)
• Daftar suburban di Sydney
• Monocline
• Purbeck Monocline
• Geology of Dorset
• Fold (geology)
• List of Sydney suburbs
• Lebombo Mountains
• List of national parks of the United States
• Monolith
• Junggar Basin
• Purbeck Hills