Homerian

Paleogeography of the Homerian, 430 Ma

−444 — – −442 — – −440 — – −438 — – −436 — – −434 — – −432 — – −430 — – −428 — – −426 — – −424 — – −422 — – −420 — – −418 —	52°36′56″N 2°33′53″W / 52.6156°N 2.5647°W / 52.6156; -2.5647
Lower GSSP ratified	1980[4]
Upper boundary definition	FAD of the graptolite Saetograptus (Colonograptus) varians
Upper boundary GSSP	Pitch Coppice, Ludlow, U.K. 52°21′33″N 2°46′38″W / 52.3592°N 2.7772°W / 52.3592; -2.7772
Upper GSSP ratified	1980[4]

In the geologic timescale, the Homerian is an age of the Wenlock Epoch of the Silurian Period of the Paleozoic Era of the Phanerozoic Eon that is comprehended between 430.5 ± 0.7 Ma and 427.4 ± 0.5 Ma (million years ago), approximately. The Homerian Age succeeds the Sheinwoodian Age and precedes the Gorstian Age.

The name comes from the small village of Homer, Shropshire near Much Wenlock.^[5] The defining lower boundary of Homerian rock layers (GSSP) is located within the Coalbrookdale Formation of England.

References

• Neoarchean (2.5–2.8 Ga)
• Mesoarchean (2.8–3.2 Ga)
• Paleoarchean (3.2–3.6 Ga)
• Eoarchean (3.6–4 Ga)

 

ka = kiloannum (thousands years ago); Ma = megaannum (millions years ago); Ga = gigaannum (billions years ago).
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