Code
ORBUR
Status
Formal (Van Adrichem Boogaert & Kouwe 1994).
Lithologische beschrijving
Extrusive volcanic unit of acidic composition, massive, grey to pale pink, consisting of a microcrystalline groundmass with quartz phenocrysts. Petrologically interpreted as a rhyolite. The sediments overlying this member contain a number of thin volcanic beds (minor lava flows).
Afzettingsmilieu
Volcanic.
Definitie ondergrens
Not yet defined
Definitie bovengrens
Not yet defined
Dikte indicatie
Up to 139 m.
Geografische verbreiding
Regionale correlatie
Unknown.
Ouderdom
Radiometrically dated at 341 ± 30 Ma (Mobil Producing Netherlands Inc.; published in Sissingh 2004). Dating implies Visean age, i.e. early Carboniferous.
Holostratotype
Well:
Depth (thickness) AH:
2157 to 2296 m (139 m)
Vorige benaming(en)
None.
Gereviewed door (datum)
Tom van Hoof, Geert-Jan Vis (2018).
Referenties
Sissing, W. 2004. Palaeozoic and Mesozoic igneous activity in the Netherlands: a tectonomagmatic review. Netherlands Journal of Geosciences 83 (2), 111-134.
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1994. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section B, Devonian and Dinantian. Mededelingen Rijks Geologische Dienst, 50, 1-20.
Cite as
TNO-GDN ([YEAR]). Rhyolite Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/rhyolite-member.