- the Tremadocian
- Геология: тремадок, тремадокская эпоха, тремадокский, тремадокский век, тремадокский отдел, тремадокский ярус, тремадокское время
Универсальный англо-русский словарь. Академик.ру. 2011.
the Tremadocian
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Tremadocian — The Tremadocian is the first internationally recognized stage of the Ordovician Period of the Paleozoic Era. It lasted approximately 9.7 million years, from about 488.3 ± 1.7 to about 478.6 ± 1.7 Ma (million years ago).The Tremadocian began at… … Wikipedia
Tremadocian Stage — ▪ geology lowermost of the two standard worldwide divisions of the Lower Ordovician Series and lowest of the seven stages within the Ordovician System (Ordovician Period). It encompasses all rocks formed during the Tremadocian Age, which… … Universalium
Geology of the Iberian Peninsula — The geology of the Iberian Peninsula consists of the study of the rock formations on the Iberian Peninsula, which includes Spain, Portugal, Andorra, and Gibraltar. The peninsula contains rocks from every age from Ediacaran to Recent, and almost… … Wikipedia
Geology of the North Sea — Contents 1 Tectonic structure 2 Precambrian 3 Finnmarkian, Athollian, Caledonian Orogenies … Wikipedia
Ordovician — Period 488.3–443.7 million years ago … Wikipedia
Ordovician Period — Interval of geologic time, 490–443 million years ago, the second oldest period of the Paleozoic Era. It follows the Cambrian and precedes the Silurian. During the Ordovician, many of the landmasses were aligned in the tropics. Life was dominated… … Universalium
Arenig — In geology, the Arenig group is the name applied to the lowest stage of the Ordovician System. HistoryThe term was first used by Adam Sedgwick in 1847 with reference to the Arenig Ashes and Porphyries in the neighborhood of Arenig Fawr, in… … Wikipedia
First appearance datum — is a term used by geologists and paleontologists to designate the first (oldest) appearance of a species in the geologic record. In other words, FADs represent the geologically oldest fossil of a particular species that has yet been… … Wikipedia
Tremadoc — may refer to:* Tremadog, a village in northern Wales (of which Tremadoc is an alternate, anglicised name). * The Tremadocian, the first internationally recognized stage of the Ordovician Period of the Paleozoic Era … Wikipedia
Older Dryas — The Older Dryas was a stadial period between the Bølling and Allerød oscillations during the Pleistocene glacial period of 11,700 12,000 uncalibrated years ago.[1] It is named after an indicator genus, the alpine/tundra plant Dryas, which… … Wikipedia
Allerød oscillation — The Allerød period was a warm and moist global interstadial that occurred at the end of the last glacial period. The Allerød oscillation raised temperatures (in the northern Atlantic region to almost present day levels), before they declined… … Wikipedia
