"considerable areas of" is a grammatically correct phrase and can be used in written English.
It is typically used to describe a large or significant amount or extent of something. Example: "The hurricane caused considerable areas of damage along the coast." This sentence means that the hurricane caused a large amount of damage in various parts of the coastal region.
The deal as it stands – despite comments by Clinton that efforts would continue for a wider settlement – leaves considerable areas of friction and uncertainty.
More recent craft have aluminum honeycomb paneling separated by frames to provide the basic buoyancy raft, and considerable areas of glass-fibre structure also have been incorporated.
Considerable areas of fertile soil and a favourable climate enable the production of a variety of tropical crops, most importantly cloves and coconuts.
On the level stretches are considerable areas of solid pink, paler but more dainty than that of the centaury, for the small, short-stalked flowers of the bog pimpernel grow so close together as to hide their creeping leaves.
Although slates and sandstones are the main rocks, there are volcanic outcrops and considerable areas of limestone where the relief is smoother, the soils more fertile, and the land more densely settled.
A moratorium – a proposal welcomed by the Ministry of Justice as "timely and interesting" – would also allow time for the coalition partners to capitalise on the considerable areas of agreement between them on justice policy and, where there are differences, resolve them in a rational manner.
It is the centre for a considerable area of orchards, market gardens, and dairy farms.
Among the substantial rivers that have watersheds that penetrate the Sierra Madre Oriental are the Moctezuma and Pánuco, the combined drainage system of which has captured a considerable area of the central plateau.
We choose the number of the gateways to cover a considerable area of sensor nodes.
A considerable area of previously degraded pastureland in Brazil is appropriate for agricultural use, mostly for soybean cultivation.
Originating in Argentina, Nassella trichotoma (serrated tussock) infests a considerable area of valuable grazing land in New Zealand, South Africa and Australia.
