Tagasi otsingusse
Harper et al., 2023a

A short history of the Ordovician System: from overlapping unit stratotypes to global stratotype sections and points

Harper, D. A. T., Meidla, T., Servais, T.
RaamatA Global Synthesis of the Ordovician System: Part 1
AjakiriGeological Society, London, Special Publications
Tüüpartikkel ajakirjas
Eesti autor


The Ordovician System was introduced by Charles Lapworth as solution to the overlapping unit stratotypes loosely defined by Adam Sedgwick, for the Cambrian, and Roderick Murchison, for the Silurian. The Ordovician has emerged as one of the longest and most significant of the geological periods. Following an interval of intensive research of all the key regions of the globe, unit stratotypes in the type areas of England and Wales have been replaced by seven global stages and three series based on Global Stratotype Sections and Points, enhancing the definition of these chronostratigraphic units and facilitating global correlation. As a consequence, the biological and geological events during the period can be recognised and the magnitude and significance of originations and extinctions understood with some confidence.

Viimati muudetud: 16.6.2023
KIKNATARCSARVTÜ Loodusmuuseumi geokogudEesti Loodusmuuseumi geoloogia osakond
Leheküljel leiduvad materjalid on enamasti kasutamiseks CC BY-SA litsensi alusel, kui pole teisiti määratud.
Portaal on osaks teadustaristust ning infosüsteemist SARV, majutab TalTech.
Open Book ikooni autor Icons8.