Page:A Treatise on Geology, volume 2.djvu/168

class III.—Before the Deposition of the lower Green Sands.
Strata disturbed		In What manner.		Localities		Igneous Rocks in connection.
Affecting the oolite rocks generally, but not any part of the cretaceous system	$\left\{{\begin{matrix}\ \\\\\\\\\\\\\ \end{matrix}}\right.$	A broad axis of elevation		Yorkshire (Bishop Wilton)		None
		Unconformity of dips	$\left\{{\begin{matrix}\ \ \end{matrix}}\right.$	Bowood		None
				Blackdown		None
		Great dyke and fault		Yorkshire (Moors near Whitby) (Vol. I. p. 231.)		Basaltic dyke from Teesdakle
		Complicated effects	$\left\{{\begin{matrix}\ \\\\\ \end{matrix}}\right.$	Skye, Eigg		Sienite, hyperstheine and other trap rocks, pitchstone of Eigg
				Ord of Caithness (Vol. I. p. 231)		Granite

Of doubtful age.—The gentle anticlinal of coralline oolite near Bottisham (Cambridgeshire), which perhaps affects the lower greensand of Ely. no igneous rocks. Professor Sedgwick discovered it.

class IV.—Before the Deposition of the Chalk.
Strata disturbed	In What manner.		Localities		Igneous Rocks in connection.
Affecting, perhaps, all the tertiary strata which occur in the district	Anticlinal axes. (See Vol. I p. 276.)		Weald of Kent and Sussex		None
			Isle of Wight		None