No, that is what is called Greensand.
"Madam How and Lady Why or, First Lessons in Earth Lore for Children" by Charles Kingsley
Will you some time have to examine the Chalk and its junction with London Clay and Greensand?
"More Letters of Charles Darwin" by Charles Darwin
This is called commonly the lower Greensand, though it is not green, but rich iron-red.
"Town Geology" by Charles Kingsley
Lower Greensand or Neocomian, / 3.
"The Ancient Life History of the Earth" by Henry Alleyne Nicholson
The coprolites lay undisturbed in countless numbers in the lias, the greensand, and the Suffolk crag.
"Talks on Manures" by Joseph Harris
Freshwater Purbeck beds lie below the Portland and Lower Greensand beds; they cap the ridge between Oving and Whitchurch.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3" by Various
One of the ferns is a tree-fern with thick stems, which has also been found in the Upper Greensand of England.
"Island Life" by Alfred Russel Wallace
For further information see the articles CHALK; GREENSAND; WEALDEN.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 6" by Various
You probably wonder why these red cliffs are called Greensand.
"The Geological Story of the Isle of Wight" by J. Cecil Hughes
It consists of a dark blue marl, sometimes intermixed with greensand.
"A Manual of Elementary Geology" by Charles Lyell