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Abstract

General features of the Tertiary System:
Overlying the prevailing sandstones, limestones, shales,
and coal beds of the Mesozoic Period are to be found vast
accumulations of clays, sands, gravel, marls, calcareous
grits, limestones, gypsum, and lignites, of either marine or
fresh-water origin. These accumulations, as a rule, do
not present the same features as those of the older rocks,
inasmuch as the process of consolidation and metamorphism,
excepting in rare instances, is far less complete. The
rocks generally are loose and incoherent, and their exposed
surfaces are less able to resist the weathering and denuding
influences of air and water.

Item Type:	Article
Authors/Creators:	Johnston, Robert Mackenzie
Keywords:	Royal Society of Tasmania, Van Diemens Land, VDL, Hobart Town, natural sciences, proceedings, records
Journal or Publication Title:	Papers & Proceedings of the Royal Society of Tasmania
Collections:	Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:	In 1843 the Horticultural and Botanical Society of Van Diemen's Land was founded and became the Royal Society of Van Diemen's Land for Horticulture, Botany, and the Advancement of Science in 1844. In 1855 its name changed to Royal Society of Tasmania for Horticulture, Botany, and the Advancement of Science. In 1911 the name was shortened to Royal Society of Tasmania.
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