Salt-Marsh Formations – a salt-marsh island

This elevated patch of land within the salt marsh collects fresh water in a “lens” while suppressing the salt water underneath. Land formations like this are found in many salt marshes. There are many different ways that this island could have formed. Perhaps the tide washed in debris and other foreign materials (silt, sand and other plant life) that became encased in the mud while gradually forming the island. A more complex speculation may point to former glacial deposits. However it was formed, it is worthy to note that the plant species growing here are mostly fresh water and high land species.