Code
    XXE
          Status
    Informal (Van Adrichem Boogaert & Kouwe 1993).
          Lithological description
    Consists of (a.o.): (alkali) basalt, nephelinite, basanite.
Depositional setting
    Extrusive igneous rocks.
Definition of lower boundary
    Usually sharp.
Definition of upper boundary
    Usually sharp.
Thickness indication
    Up to 45 m.
          Geographical distribution
    Regional correlation
    N/A
          Age
    Devonian - Late Cretaceous (Van Bergen & Sissingh 2007).
          
    Type section
  
  Well:
  Not yet determined.
      Depth (thickness) AH:
  Not yet determined.
      Origin of name
    None.
          Previous name(s)
    None.
          Reviewed by (date)
    Geert-Jan Vis (2019).
          References
    Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1993. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section G, Upper Jurassic and Lower Cretaceous. Mededelingen Rijks Geologische Dienst, 50, 1-80..
              Van Bergen, M.J., Sissingh, W. 2007. Magmatism in the Netherlands: expression of the north-west European rifting history. In: Geology of the Netherlands. Eds: Wong, Th.E., Batjes, D.A.J., De Jager, J., Royal Netherlands Academy of Arts and Sciences, 197–221.
          Cite as
    TNO-GDN ([YEAR]). Extrusive rock. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://acc.dinoloket.nl/en/stratigraphic-nomenclature/extrusive-rock.