The phrase "a great excess" is correct and usable in written English.
It can be used to describe a situation where there is an abundance or surplus of something, often in a negative context.
Example: "The company faced financial difficulties due to a great excess of inventory that could not be sold."
Alternatives: "a significant surplus" or "an overwhelming amount".
A great excess of potassium over sodium, uncommon in granite except as a consequence of hydrothermal alteration, is not uncommon in rhyolites.
The gold-standard therapy in end-stage heart failure remains cardiac transplantation at the present time, but there is a great excess of eligible candidates compared with the number of donor organs, so alternative strategies are needed.
Since the kidney receives a great excess of blood (about 25 percent of the blood pumped by the heart each minute), the reduction with age does not normally result in an accumulation of waste products in the blood.
Granites with a great excess of alkali feldspar over plagioclase are known from New England; they occur in smaller bodies at numerous sites in British Paleogene and Neogene rocks and in the Oslo region of Norway, but their most extensive development is in northern Nigeria.
There is a great excess of saturated fat and sweeteners.
From a real estate perspective, it is considered virtually impossible to create enough demand to justify such a tower, but that at some point someone with a great excess of money will likely do it anyway.
We note that Ashkenazi cases had a greater excess of heterozygous and homozygous HNF4A genotypes with the risk allele than expected by chance, indicating a dominant mode of inheritance.
Several studies have shown that smoking may confer a greater excess risk for chronic diseases in women compared with men.
Women who lived in rural areas had a greater excess risk of death due to ovarian cancer than did those who lived in urban areas.
Furthermore, it may be that women extract a greater quantity of carcinogens and other toxic agents from the same number of cigarettes than men, which again might explain why smoking confers a greater excess risk in women than in men.
This is a validation of a specific prediction of the Ambush Hypothesis: In organisms with high GC content, fewer OSCs are expected by chance, thus a greater excess is needed to counterbalance the effects of translational frameshifts.
