The phrase "accumulation of which" is correct and usable in written English.
It can be used when referring to a collection or gathering of items or information that has been previously mentioned or is understood in context.
Example: "The research findings revealed an accumulation of which the team had not anticipated, leading to new insights."
Alternatives: "collection of which" or "gathering of which".
When he found this out it became one of those happy little intersections of shared personality, the slow accumulation of which is love.
PD patients have abnormal aggregation of intestinal α-synuclein, the accumulation of which may be promoted by inflammation.
The characters – a Hollywood director pitching a movie, a female classics professor, a Greek soldier and the maid who found Agamemnon's corpse – provide a growing body of evidence, the accumulation of which only magnifies the tantalising absence of Clytemnestra herself.
There are few navigable harbours or harbour approaches that do not require, at varying intervals of time, removal of deposits of unwanted material, the continuing accumulation of which can ultimately obstruct navigation.
This enzyme is required for rapid clearing of the peptidyl-tRNAs, the accumulation of which in the cell leads to cell death.
Nevertheless, styrene remaining in the vent gas is highly active to polymerize into oligomers, the gradual accumulation of which is harmful to hydrogen separation equipments.
Endocannabinoids (ECs) are associated with obesity and ectopic fat accumulation, both of which play a role in the development of cardiovascular disease (CVD) in type 2 diabetes (T2D).
Handled with Tuymans's characteristic short stabs and paddled-about marks, the painting, which isn't very big, is an accumulation of touches which creep up to and shrink away from a schematic pencil under-drawing.
Asparagine is responsible for the accumulation of acrylamide, which may increase the risk of certain cancers, during cooking.
Yet in the end it is this accumulation of detail which makes "The Other Americans" persuasive.
"One possibility we're looking at is that there was something about the accumulation of questions which caused greater difficulty than the individual questions," Mr. Kadamus said.
