英和和英

名詞

dyke phase (plural dyke phases)

1. (geology) The period or event during which a dyke (a body of rock originally filling a fissure but now often rising above the older stratum that has eroded away) is formed.
   • 1916, Geological Society of South Africa, Transactions - Volumes 18-24, page 46:

     and I have failed to detect those similarities between the sill and dyke phase of the same magma, which may reasonably be expected on such a view.

   • 1926, Frederick Henry Hatch, Alfred Kingsley Wells, The Petrology of the Igneous Rocks, page 490:

     One of the most striking features of this igneous cycle is the remarkably well-developed dyke-phase, which in general followed, though to some extent it overlapped, the plutonic phase.

   • 2011, Rajesh Srivastava, Dyke Swarms: Keys for Geodynamic Interpretation, page 277:

     The rocks of dyke phase include viz. microgranite, rhyolite, trachyandesite, trachydacite in Siwana