Definition of neptunian dyke in English:

neptunian dyke

Line breaks: nep¦tun|ian dyke

noun

Geology
A deposit of sand cutting through sedimentary strata in the manner of an igneous dyke, formed by the filling of an underwater fissure.
More example sentences
  • Therefore we correlate the ash-fall episode recorded at Katraboca with that represented by the tuff filling the neptunian dyke of Liter.
  • The sample was collected from the redeposited tuff filling a neptunian dyke in the SW wall of the Liter quarry.
  • A neptunian dyke is a sheet of sediment or sedimentary rock, usually vertical or subvertical, which cuts across any other rock type and, at first glance, resembles an igneous dyke.

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Pronunciation: grəˈmɛːrɪən
noun
a person who studies and writes about grammar