Shallow caves and blowholes on the Nullarbor Plain, Australia — Flank margin caves on a low gradient limestone platform

Geomorphology ◽  
2013 ◽  
Vol 201 ◽  
pp. 246-253 ◽  
Author(s):  
Shannon Burnett ◽  
John A. Webb ◽  
Susan White
Keyword(s):  
Flank Margin Caves

Flank Margin Caves and the Position of Mid- to Late Pleistocene Sea Level in the Bahamas

2020 ◽  
Vol 36 (2) ◽  
pp. 249
Author(s):  
John Mylroie ◽  
Michael Lace ◽  
Nancy Albury ◽  
Joan Mylroie
Keyword(s):  
Sea Level ◽  
Late Pleistocene ◽  
The Bahamas ◽  
Flank Margin Caves

Uplifted flank margin caves in telogenetic limestones in the Gulf of Orosei (Central-East Sardinia—Italy) and their palaeogeographic significance

Geomorphology ◽  
2015 ◽  
Vol 231 ◽  
pp. 202-211 ◽  
Author(s):  
Ilenia Maria D'Angeli ◽  
Laura Sanna ◽  
Claudio Calzoni ◽  
Jo De Waele
Keyword(s):  
Flank Margin Caves

Flank margin caves can connect to regionally extensive touching vug networks before burial: Implications for cave formation and fluid flow

2021 ◽  
Author(s):  
Charles I. Breithaupt ◽  
Jason D. Gulley ◽  
Paul J. Moore ◽  
Shawn M. Fullmer ◽  
Charles Kerans ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Flank Margin Caves

scholarly journals Diffuse Versus Conduit Flow in Coastal Karst Aquifers: The Consequences of Island Area and Perimeter Relationships

Geosciences ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 268 ◽  
Author(s):  
Erik Larson ◽  
John Mylroie
Keyword(s):  
Discharge Zone ◽  
Flow Transition ◽  
High Porosity ◽  
Freshwater Lens ◽  
Conduit Flow ◽  
Diffuse Flow ◽  
Porosity And Permeability ◽  
Area And Perimeter ◽  
Bahamian Archipelago ◽  
Flank Margin Caves

The majority of limestone islands are made of eogenetic carbonate rock, with intrinsic high porosity and permeability. The freshwater lenses of small islands are dominated by diffuse flow regimes as the island perimeter is everywhere close to the meteoric catchment of the island interior. This flow regime produces flank margin caves at the lens margin, where dissolution is enhanced by mixing corrosion, superposition of organic decay horizons and higher flow velocities as the lens thins. The lens interior develops touching-vug flow systems that result in enhanced permeability and lens thinning over time. As islands become larger, the area (meteoric catchment) goes up by the square, but the island perimeter (discharge zone) goes up linearly; diffuse flow becomes inefficient; conduit flow develops to produce traditional epigenic cave systems that discharge the freshwater lens by specific turbulent flow routes, which in turn are fed by diffuse flow in the island interior. Locally, diffuse flow to the island perimeter continues in coastal proximal areas between major conduit flow routes to produce flank margin caves. The Bahamian Archipelago represents a case history in which tectonics is limited, the rocks are entirely eogenetic and the diffuse to conduit flow transition is demonstrated.

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