This page provides a glossary of geological terms to be found on the TVRIGS website and elsewhere. It is an evolving document and will grow as the site expands.
Named (by von Humbodt, 1795) from a three-fold division (red-beds, chalk and black shales) which occurs in Germany. It covers an episode in Earth’s history betwee c.251million and 199 million years before present. The Triassic is further subdivided into Lower, Middle and Upper episodes. These strata crop out sparsely along the lower reaches of the River Tees.
A colloquial term for any dark fine-grained igneous rock (e.g. dolerite, basalt, andesite, etc.).The name is derived from the Great Whin Sill of Northumberland and Durham.
Glossary (T – Z)
This page provides a glossary of geological terms to be found on the TVRIGS website and elsewhere. It is an evolving document and will grow as the site expands.
T
W
«Glossary(L-S)
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