The phrase "a source of vast" is not complete and lacks context, making it difficult to determine its correctness in written English.
It can be used when referring to something that provides a large quantity or extent of something, but it typically needs to be followed by a noun to clarify what is vast.
Example: "The library is a source of vast knowledge for students and researchers."
Alternatives: "a wealth of" or "an abundance of".
Gadaa.com is also a source of vast information about the Horn of Africa's largest nation, Oromo.
Gadaa.com is also a source of vast information about the Horn of Africa's largest nation, Oromo". The official web site of a key organization in the Ethiopian political opposition--in English and Amharic.
In exchange for half-ownership of Singer's new company, the strait-laced lawyer helped the brassy inventor turn his idea into the Model T of sewing machines: cheap, sturdy, culturally transformative and a source of vast wealth.
Cuker, unrestrained by deference, was credited by Giuliani with crafting a speaking style for him — a conversational persuasiveness — that became a political strength (and a source of vast wealth on the lecture circuit).
Given the strained finances of most papers, however, this may not prove to be a source of vast profits.Contrary to all the grand traditions of journalistic indiscretion, the Post has "adopted a little bit of the Amazon way of not talking about future plans," says Steve Hills, the paper's president and general manager.
The connection between money and kinship systems is ancient, profound and a source of vast fine scholarship.
The soundscape represents the acoustic footprint of a landscape, and may well be a source of a vast amount of information that could be used efficiently in, for example, long-term bird aggregation monitoring schemes.
Bradley Manning, the confessed source of vast archives of government documents made public through WikiLeaks, as pretrial hearings wrapped up.
For decades it has been a source of bitter rivalry among Iran's vast army of football fanatics.
Critics on many sides said the program had become a vast source of temporary foreign workers at a time of high joblessness for Americans and had lost some of its purpose as a source of positive cultural exposure to the United States for foreign university students.
The skin secretions of frogs and toads (Anura) have long been a known source of a vast abundance of bioactive substances.
