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Geological Formation

Torridon Group

Named Rock Formations and Groups

The Torridon Group, often called the Torridonian, is a sequence of Mesoproterozoic to Neoproterozoic sedimentary rock exposed along the coast of northwest Scotland and the Inner Hebrides, from the Isle of Mull to Cape Wrath, dated to roughly 1,100 to 544 million years old. It lies unconformably on the older Lewisian basement rock and beneath Cambrian strata, making it a key reference sequence for Precambrian Scotland. Recent research places it within a wider Wester Ross Supergroup whose detrital zircon signatures resemble those of the Morar Group of the Moine sequence, tying it to the Grenville mountain-building episode.

Connections

Associated With

Neoproterozoic, Eras
Source Torridon Group (Wikipedia)
Sandstone, Materials
Source Torridon Group (Wikipedia)
Tonian, Eras
Source Torridon Group (Wikipedia)

Caused By

Sedimentation, Processes
Source Torridon Group (Wikipedia)

In Discipline

Geomorphology, Disciplines
Source Torridon Group (Wikipedia)
In the Other Atlases

Found In

United Kingdom

Also in Geography Atlas: where this subject is found.

Sources
Torridon Group (Wikipedia)
  • Associated With: Sandstone, Lead paragraph
    These strata are particularly well exposed in the district of upper Loch Torridon, a circumstance which suggested the name Torridon Sandstone, first applied to these rocks by James Nicol.
  • Associated With: Tonian, Lead, age Tonian
    The Torridon Group is a series of Tonian (lower Neoproterozoic) arenaceous and argillaceous sedimentary rocks, which occur extensively in the Northwest Highlands of Scotland.
  • Associated With: Neoproterozoic, Lead, age Neoproterozoic
    The Torridon Group is a series of Tonian (lower Neoproterozoic) arenaceous and argillaceous sedimentary rocks, which occur extensively in the Northwest Highlands of Scotland.
  • In Discipline: Geomorphology, Lead paragraph
    The Torridon Group is a series of Tonian (lower Neoproterozoic) arenaceous and argillaceous sedimentary rocks, which occur extensively in the Northwest Highlands of Scotland
  • Caused By: Sedimentation, Lead section (caused-by Sedimentation)
    The Torridon Group is a series of Tonian (lower Neoproterozoic) arenaceous and argillaceous sedimentary rocks, which occur extensively in the Northwest Highlands of Scotland.
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