Meaning of Dalradian in English:

Dalradian

Pronunciation /dalˈrɑːdɪən/

See synonyms for Dalradian

adjective

Geology
  • Relating to or denoting a series of late Precambrian metamorphic rocks occurring in Scotland and Ireland.

    ‘he gained particular recognition as a leading authority on the Dalradian rocks of the eastern Scottish Highlands’
    • ‘Kennedy and McKerrow observed that the Late Precambrian / Cambrian Dalradian sequences of the Scottish Highlands were deformed in the Ordovician.’
    • ‘Thus, movement along the Mannin Thrust brought mid-crustal plutons and Dalradian country rocks tectonically above the extrusive volcanic sequence.’
    • ‘Peak metamorphic temperatures in the Dalradian schists reached 620 30°C in the north but only c.400°C in the south.’
    • ‘The Dalradian rocks in Arran were initially folded during the Caledonian orogeny into a recumbent structure known as the Aberfoyle synform.’
    • ‘There is considerable uncertainty in both the age of deposition of the Dalradian sediments in the Scottish Highlands and their subsequent metamorphism.’

noun

Geology
the Dalradian
  • A series of late Precambrian metamorphic rocks occurring in Scotland and Ireland.

    ‘Here, the first Grampian deformation to affect the Dalradian can be matched with very low-grade rocks in the adjacent Clew Bay Complex, a dismembered accretionary complex.’
    • ‘The age signature of detrital zircons within the Dalradian as well as the Torridonian and Moine is consistent with derivation from a Laurentian hinterland.’
    • ‘Current controversy over the maximum age of the Dalradian arises from contrasting interpretations of structural and lithostratigraphical relationships, and differing geological interpretation of chronological data.’
    • ‘Evidence for the maximum age of the Dalradian is ambiguous, and interpretations differ markedly.’
    • ‘Others have proposed a prolonged period of extension for Laurentia during which the Dalradian was deposited, and suggested that the Neoproterozoic events are related to extension.’

Origin

Late 19th century from Dalrad-, from Dalriada(by alteration), + -ian.