386 
RELATIVE AGES OF 
TABLE I. 
Showing the Relations of the Alluvial, Aqueous, Volcanic, and 
Hypogene Formations of different ages. 
Periods. 
Formations. 
Some of the Localities where the Formations occur. 
W 
o 
a 
Alluvial ( Beds ° f ? xistin B ri 
I ch. xiv. 
vers, See, vol. ii. 
Aqueous. 
(a. Marine. 
b. Freshwater. 
B 
1. Newer 
Pliocene. 
B. 
f Coral reefs of the Pacific, vol. ii. 
\. ch. xviii. 
( Bed of Lake Superior, &c, vol. i. 
\ ch. xiii. 
Volcanic Etna, Vesuvius, vol. i. ch. xix. xx. xxi. 
(a Plutonic -[ Concea/ed ; foci of active volcanos, 
I vol.iii. ch. xxy. 
b M t 1 ' \ Concealed ; around the foci of active 
e amorp e. j volcanos, vol. iii. ch. xxvi. 
! Loess of the Rhine — gravel covering 
the Newer Pliocene strata of 
Sicily. 
Marine. Val di Noto, Sicily. 
Freshwater. Colle, in Tuscany. 
Volcanic. ..... Val di Noto, Sicily. 
{Concealed ; foci of Newer Pliocene vol- 
canos — underneath the Val di 
Noto, vol. iii. p. 107, and ch. xxv. 
(Concealed; near the foci of Newer Pli- 
ocene volcanos — underneath the 
Val di Noto, vol. iii. p. 109, and 
ch. xxvi. 
Aqueous, j^ - 
Hypogene. 
2. Older Pli- 
ocene. 
C. 
f Alluvial. 
Aqueous. 
Volcanic. 
• a • 
' a. Marine, 
i 6. Freshwater, 
Hypogene. 
i a, Plutonic. 
b, Metamorphic, 
Alluvial. 
3. Miocene. 
Aqueous. 
Volcanic. 
fa. Marine. 
[b. Freshwater, 
.Hypogene. 
Alluvial. 
Aqueous. 
4. Eocene. J 
E. 1 Volcanic. 
^Hypogene. 
fa. Plutonic. 
[b, Metamorphic, 
l a. Marine, 
i b. Freshwater. 
fa. Plutonic. 
[b, Metamorphic. 
Norfolk? vol. iii. p. 173. 
Subapennine formations. 
Near Sienna, vol. iii. p. 160. 
Tuscany, vol. iii. p. 159. 
(Concealed; foci of Older Pliocene 
| volcanos — beneath Tuscany, 
f Concealed; probably near the same 
{ foci. 
(Mont Perrier, Auvergne — Orleanais, 
I vol. iii. p. 217. 
Bordeaux. Dax. 
Saucats, near Bordeaux, vol. iii. p. 207. 
Hungary, vol. iii. ch. xvi. 
f Concealed; foci of Miocene volcanos 
\ — beneath Hungary, 
f Concealed; probably around the same 
\ foci. 
f Summit of North and South Downs ? 
\ vol. iii. p. 311. 
Paris and London basins. 
Isle of Wight — Auvergne. 
j Oldest volcanic rocks of the Limagne 
(. d' Auvergne, vol. iii. ch. xix. 
f Concealed ; foci of Eocene volcanos— 
beneath theLiraagne d' Auvergne. 
( Concealed ; probably near the same 
\ foci, 
