The pseudoscientific endeavour of flood geology has been developed to suggest mechanisms that could permit this.

In the late 1930s he resisted the American creationists call for acceptance of flood geology.

In the late 1930s he resisted the American creationists call for acceptance of flood geology, which later led to conflict within the organisation.

Mainstream science abandoned the idea of flood geology that required major deviations from present physical processes.

Ramm's book was supportive of religious and scientific dissent from flood geology.

Morris' theories of flood geology are widely promoted around the world, with his books being translated into many languages.

He produced several anti-evolution and creationist works, particularly on the subject of flood geology.

By this time he was convinced that radiohalos might be "the key" to determining the age of the Earth, and vindicating flood geology.

Gentry has had strong disagreements with other creationists over some details of flood geology.

He is a leading figure in the field of flood geology, having been involved and published extensively on the creation-evolution controversy.