Ordovician

How To Use Ordovician In A Sentence

• The northernmost outcrops consist of Ordovician chloritic slates, phyllitic metavolcanic rocks and slatey metapelitic rocks.
• The Cape Floristic Region overlies the Cape Supergroup, a Devonian-Ordovician series of sedimentary strata, where alternating quartzitic sandstones such as Table Mountain and the Witteberg Groups alternate with fine-grained shales, as seen in the Bokkeveld Group. Montane fynbos and renosterveld
• It is now widely recognized that the Late Ordovician mass extinction was both coincident with and causally linked to an event of continental glaciation centered in the North African and South American regions of Gondwana.
• This was accompanied by the multistage emplacement of large intrusive bodies in the Cambrian, Ordovician, and Silurian periods.
• Williams, include oceanic crust and mantle rock exposed by the obduction process of plate tectonics, as well as sedimentary rock formed during the Ordovician, Precambrian granite and WN.com - Business News
• Ordovician strata are characterized by numerous and diverse trilobites and conodonts (phosphatic fossils with a tooth-like appearance) found in sequences of shale, limestone, dolostone, and sandstone.
• Mason is excited because we might find things that were alive in the Ordovician Period ... and, like, he could instantly name three or four creatures alive then. Day in the Life of an Idiot
• Thick Permian to Cretaceous continental rise deposits merge southward into a continuous Ordovician to Eocene shelf sedimentary succession of marine carbonate, sandstone, siltstone and shale.
• They are generally common microfossils in Phanerozoic marine sedimentary rocks, at least from the early Middle Ordovician onward.
• The new U-Pb analyses on the felsic porphyroids represent the first geochronological demonstration that a magmatic event occurred during the Mid-Ordovician in the Lower Domain of the Peloritan Mountains.