A type of soft, muddy, organic sediment formed in lakes and wetlands, rich in plant material and decomposed organisms, used in peat studies.
From Swedish 'gyttja' (gunk/filth). A geological/ecological term adopted from Scandinavian languages to describe specific wetland deposits studied by scientists.
Gyttja is basically lake mud filled with millions of years of dead plants—scientists read these layers like books to understand ancient climate and how ecosystems changed!
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