Chapter XVII—UPPER CRETACEOUS GROUP.

Lapse of Time between Cretaceous and Eocene Periods. — Table of

successive Cretaceous Formations. — Maestricht Beds. — Pisolitic

Limestone of France. — Chalk of Faxoe. — Geographical Extent and Origin

of the White Chalk. — Chalky Matter now forming in the Bed of the

Atlantic. — Marked Difference between the Cretaceous and existing

Fauna. — Chalk-flints. — Pot-stones of Horstead. — Vitreous Sponges in

the Chalk. — Isolated Blocks of Foreign Rocks in the White Chalk

supposed to be ice-borne. — Distinctness of Mineral Character in

contemporaneous Rocks of the Cretaceous Epoch. — Fossils of the White

Chalk. — Lower White Chalk without Flints. — Chalk Marl and its

Fossils. — Chloritic Series or Upper Greensand. — Coprolite Bed near

Cambridge. — Fossils of the Chloritic Series. — Gault. — Connection

between Upper and Lower Cretaceous Strata. — Blackdown Beds. — Flora of

the Upper Cretaceous Period. — Hippurite Limestone. — Cretaceous Rocks

in the United States.

The Student's Elements of Geology · 第 17 / 47 章