Which visiting in 1787 , the geologist James Hutton found his first example of an unconformity to the north of Newton Point near Lochranza .
Which provided evidence for his Plutonist theories of uniformitarianism and about the age of the Earth .
Visiting in 1787 , the geologist James Hutton found his first example of an unconformity to the north of Newton Point near Lochranza , which provided evidence for his Plutonist theories of uniformitarianism and about the age of the Earth .