I want to know the answer to the following question:
What did the melting of ice on Gondwana add to?
All the background I'm provided with is that "During the Silurian, Gondwana continued a slow southward drift to high southern latitudes, but there is evidence that the Silurian ice caps were less extensive than those of the late Ordovician glaciation.". Is that enough to answer the question?
Answer: no