(1) Photograph: Alamy The Devils Postpile, near Mammoth Lakes on the east side of Yosemite, looks as if it might have been created by some satanic sculptor, but really it's just one of the world's best examples of columnar basalt, a similar geological feature to the Giants Causeway in Northern Ireland.
(2) The US Geological Survey estimated the waters in the Arctic contain about 90bn barrels of recoverable oil.
(3) The US Geological Survey said it was the biggest earthquake to hit Japan since officials began keeping records in the late 1800s and one of the biggest recorded in the world.
(4) "Autumn colours are very patchy and depend on regional variation in climate and differences in geology.
(5) A tentative analysis of the data with regard to the geological situation is presented.
(6) In December the US Geological Survey also warned that sea-level rise could be even worse than feared, as much as 1.5 metres by the end of this century, partly due to increased melting of the volume of water stored in glaciers in Antarctica and Greenland.
(7) The possible association between the geological nature of the soil, as related to radioactivity, and lung cancer occurrence has been explored in an Italian province.
(8) The authors relate the tentative measurement data on radon-222 concentrations in different buildings situated in the Ukrainian bedrock geological region.
(9) Europe is geologically resource poor [so] there is a lot of scope to try to move towards an economic development [model] that would be decoupled from the consumption of resources and move more towards the reuse of the resources we already have”, he says.
(10) A total of 435 United States Geological Survey and United States Forest Service workers in Alaska were studied for serologic evidence of past infections with four arboviruses known or suspected to be human pathogens.
(11) This is a big deal.” geology graphic He said that the scale and rate of change on measures such as CO2 and methane concentrations in the atmosphere were much larger and faster than the changes that defined the start of the holocene.
(12) The determination of platinum in geological samples by this method has been compared with an inductively coupled plasma mass spectrometric method.
(13) There are 4,000 SSSIs, described by government officials as the “best of our wildlife, geological and physiographical heritage” in England.
(14) ID7720613 Restaurante da Praia, Praia da Arrifana, Algarve Stewed octopus with sweet potato is the speciality at this restaurant, which sits alone at the bottom of the steep access road that winds down to one of Portugal’s most beautiful and geologically interesting beaches.
(15) The northerly region has become a new frontier for exploration since global warming caused ice to melt, oil escalated in value to its current $114 a barrel and the US Geological Survey concluded that almost a quarter of the world's undiscovered oil and gas reserves may lie in the Arctic.
(16) The National Geological Survey recorded a seismic event of 2.1 magnitude.
(17) When I ask him how his background in geology is being used here, he tells me of his fieldwork at the Grand Canyon.
(18) Prof Hugh Sinclair, a specialist in surface geology and one of 59 Productions’ advisers, said he felt frustrated that there was no statue to Hutton anywhere in Edinburgh, despite the huge significance of his work.
(19) These revisions suggest sea-level rises could easily top a metre by 2100 - a figure that is backed by the US Geological Survey, which this year warned that they could reach as much as 1.5 metres.
(20) Many of the contemporary correlations between geological factors and human behavior are also apparent within historical data.
Ordovician
Definition:
(a.) Of or pertaining to a division of the Silurian formation, corresponding in general to the Lower Silurian of most authors, exclusive of the Cambrian.
(n.) The Ordovician formation.
Example Sentences:
(1) Furthermore, the identification of vertebrate hard tissues in the oral elements of conodonts extends the earliest occurrence of vertebrate hard tissues back by around 40 million years, from the Middle Ordovician (475 million years ago) to the Late Cambrian (515 million years ago).
(2) His message remains blunt today: “Show me a scientist who claims there is no population problem and I’ll show you an idiot.” Earth’s five previous mass extinctions End-Ordovician, 443 million years ago A severe ice age led to sea level falling by 100m, wiping out 60-70% of all species which were prominently ocean dwellers at the time.
(3) – Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous … 'What will survive of us is love', wrote Philip Larkin.
(4) It begins with a discussion of the origins of the craniofacial tissues in the dentine and bone of the dermal denticles of the Ordovician jawless vertebrates, followed by a brief discussion of the mechanisms responsible for the evolution of the jaws and the origin of vertebrate dentition.
(5) In each of the following, more than half the Earth’s species disappeared: 1 End-Ordovician, 443 million years ago.
(6) Paleontological data indicate that the earliest recognizable vertebrate remains, bone fragments of Upper Cambrian and Lower Ordovician heterostracan fishes, were deposited in a marine situation.
(7) Dentine, the bone of attachment associated with dentine, the basal bone to which dermal denticles are fused and cartilage of the Ordovician agnathan dermal exoskeleton were all derived from the neural crest and not from mesoderm.
(8) Cartilage (unmineralized) can be inferred to have been present in heterostracans and osteostracans, and globular mineralized cartilage was present in Eriptychius, an early Middle Ordovician vertebrate unassigned to any established group, but assumed to be a stem agnathan.
(9) The contemporaneous appearance of cellular and acellular bone in heterostracans and osteostracans during the Ordovician provides no clue as to whether one is more primitive than the other.