APPENDIX.
Details of General Section of Lower Eocene deposits at Portsmouth (Dockyard Extension Works'), commencing with the highest strata exposed.
feet, inches.
Brownish sandy clay, with thin partings of sand 25 0
Sandy clay 5 4
Sand, with small nodules of claystone 0 3
Brownish sandy clay 4 0
Septaria 0 0
Brownish clay 5 9
Septaria 0 0
Layer of greasy clay 0 2
Stiff greyish clay , with thin partings of sand 5 2
Sand, with pyrites 0 0-1/2
Stiff greyish-brown clay 2 1
Septaria 0 0
Stiff greyish-brown clay 5 6
Sandy clay 0 2
Stiff greyish-brown clay 2 10
Thin layer of Pinna ; crushed, and much
decomposed. (These shells appear to
have been whole when deposited.) 0 2
Thin seam of greasy clay 0 1
Stiff greyish-brown clay 2 10
Brownish clay, with rounded black flint pebbles 0 10
Greenish sands, finely bedded and interstratified with thin lines of clay and fragments of carbonaceous matter. Fossils numerous 3 0
Layer of greenish chloritous sand, crowded with fossils, and forming the nucleus of a zone of large concretions of shell-rock 0 1
Argillaceous sand, slightly mottled 5 0
Sand, with double band of tabular Claystone or Septaria, containing thin lines of vegetable matter 1 6
Greyish-brown (or greenish-brown) mottled sand, with thin seams of clay 6 0
Septaria, at wide intervals 0 0
Greenish-grey argillaceous sand, mottled and veined with clay 4 6
Layer of finely laminated sand, nearly white when dry 0 5
(This bed is very constant in thickness within the area of the excavations.)
Greyish argillaceous sands, slightly mottled 4 6
Zone of Pholadomya margaritacea.
Zone of Pinna.
Zone of Panopoea.
Zone of Cytherea despecta.
Zone of Panopoea intermediata.
Zone of Cytherea proxima, &c. &c.
Zone of Pholas —.
Zone of Cardium Laytoni and Cytherea suessoniensis, Desh.
