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Gwaddodiad

Gwaddodiad
Enghraifft o'r canlynolproses natur, geologic term Edit this on Wikidata
Mathaccumulation Edit this on Wikidata

Proses morffolegol yw gwaddodiad. Yn ystod gwaddodiad mae defnydd (gwaddod) sy'n cael ei cario mewn dŵr yn suddo i lawer. Mae gwaddod yn ffurfio haenau gyda defnydd trwm yn fod haen o dan defnydd ysgafn.

Mae gwaddod yn casglu ar traed mynyddoedd, ar lan y môr (twyni), mewn afonnydd, ar ôl rhewlif (marian) ac ati.

Mewn pyll a llynnoedd, mae gwaddod trwm yn casglu yn ystod yr haf, ond dim ond gwaddod ysgafn yn casglu yn ystod y gaeaf pryd mae wyneb y dŵr yn rhewi. Fel hynny, mae'r haenau yn dangos oes y gwaddod.

Mae'r gwaddod yn casglu mewn afonnydd a phorthladdoedd a felly yn achosi problemau i longau. Weithiau, mae gwaddoidiad yn achosi problemau mewn ecosystemau, hefyd, er enghraifft mewn riff cwrel.

Gweler hefyd

[golygu | golygu cod]
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Gwaddodiad
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