Gorstian

426.7 ± 1.5 – 425.0 ± 1.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Chronology

−444—–−442—–−440—–−438—–−436—–−434—–−432—–−430—–−428—–−426—–−424—–−422—–−420—–PaleozoicSilurianDLlandovery Wenlock Ludlow Přídolí E Rhuddanian Aeronian Telychian Sheinwoodian Homerian Gorstian Ludfordian LochkovianOL Hirnantian←Lau event←Mulde event←Ireviken eventSubdivision of the Silurian according to the ICS, as of 2024. Vertical axis scale: Millions of years ago

−444—–−442—–−440—–−438—–−436—–−434—–−432—–−430—–−428—–−426—–−424—–−422—–−420—– · PaleozoicSilurianDLlandovery Wenlock Ludlow Přídolí E Rhuddanian Aeronian Telychian Sheinwoodian Homerian Gorstian Ludfordian LochkovianOL Hirnantian · ←Lau event←Mulde event←Ireviken event

←Lau event

←Mulde event

←Ireviken event

Subdivision of the Silurian according to the ICS, as of 2024. Vertical axis scale: Millions of years ago

Etymology

Name formalityFormal

Name ratified1980

Usage information

Celestial bodyEarth

Regional usageGlobal (ICS)

Time scale(s) usedICS Time Scale

Definition

Chronological unitAge

Stratigraphic unitStage

Time span formalityFormal

Lower boundary definitionFAD of the graptolite Saetograptus (Colonograptus) varians

Lower boundary GSSPPitch Coppice, Ludlow, U.K. 52°21′33″N 2°46′38″W/52.3592°N 2.7772°W/ 52.3592; -2.7772

Lower GSSP ratified1980

Upper boundary definitionImprecise. Near FAD of the graptolite Saetograptus leintwardinensis

Upper boundary definition candidatesNone

Upper boundary GSSP candidate section(s)None

Upper boundary GSSPSunnyhill, Ludlow, England 52°21′33″N 2°46′38″W/52.3592°N 2.7772°W/ 52.3592; -2.7772

Upper GSSP ratified1980

In the geologic timescale, the Gorstian is an age of the Ludlow Epoch of the Silurian Period of the Paleozoic Era of the Phanerozoic Eon that is comprehended between 426.7 ± 1.5 Ma and 425.0 ± 1.5 Ma (million years ago), approximately. The Gorstian Age succeeds the Homerian Age and precedes the Ludfordian Age. The age is named after Gorsty village southwest of Ludlow. The base of the age is marked by Saetograptus (Colonograptus) varians. The type section is located in a quarry in the Elton Formation at Pitch Coppice, Shropshire, United Kingdom.