WebMyr is also used with Mya (million years ago). Together they make a reference system, one to a quantity, the other to a particular place in a year numbering system that is time before the present. Myr is deprecated in geology, but in astronomy Myr is standard. Where "myr" is seen in geology it is usually "Myr" (a unit of mega-years). In ...

WebThe Eocene (/ ˈ iː ə s iː n, ˈ iː oʊ-/ EE-ə-seen, EE-oh-) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era.The name Eocene comes from the Ancient Greek ἠώς (ēṓs, "dawn") and καινός (kainós, "new") and refers to the "dawn" of modern …

WebBo Mya (1927–2006), nom de guerre of a Myanmar rebel leader, chief commander of the Karen National Union; Other uses. Mýa, a 1998 album by Mýa; Mya, a genus of soft-shell clams; MYA (unit) for "million years ago", a science-related unit of time used in astronomy, geology and biology; See also

WebThe Horseshoe Atoll is a westward-tilting arcuate chain of reef mounds 175 miles (282 km) long located in the Midland Basin, consisting of 1,804 feet (550 m) of limestone accumulated in the Pennsylvanian and 1,099 feet (335 m) in the Permian, with 15 significant petroleum reservoirs from 6,099 feet (1,859 m) to 9,902 feet (3,018 m) in depth. The reef complex …

WebThe Carboniferous (/ ˌ k ɑːr b ə ˈ n ɪ f ər ə s / KAHR-bə-NIF-ər-əs) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period 358.9 million years ago (), to the beginning of the Permian Period, 298.9 million years ago. The name Carboniferous means "coal-bearing", from the Latin carbō ("coal") and ferō …

WebRanges use unspaced en dash ({}) if only one unit symbol is used at the end (e.g. 5.9–6.3 kg), and spaced en dash ({}) if two symbols are used (e.g. 3 μm – 1 mm); ranges in prose may be specified using either unit symbol or unit names, and units may be stated either after both numerical values or after the last (all acceptable: from 5.9 to ...

WebOstriches are large flightless birds of the genus Struthio in the order Struthioniformes, part of the infra-class Palaeognathae, a diverse group of flightless birds also known as ratites that includes the emus, rheas, and kiwis.There are two living species of ostrich: the common ostrich, native to large areas of sub-Saharan Africa and the Somali ostrich, native to the …

WebThe exposed geology of the Death Valley area presents a diverse and complex set of at least 23 formations of sedimentary units, two major gaps in the geologic record called unconformities, and at least one distinct set of related formations geologists call a group.The oldest rocks in the area that now includes Death Valley National Park are extensively …

WebIn English, the unit of time for year is commonly abbreviated as "y" or "yr". The symbol "a" is more common in scientific literature, though its exact duration may be inconsistent. ... Pliocene, 5.3 to 2.6 mya The last geomagnetic reversal was 0.78 mya; The (Eemian Stage) Last Glacial Period started 0.13 mya; The Holocene started 0.01 mya; bya ...

WebThe Gelasian is an age in the international geologic timescale or a stage in chronostratigraphy, being the earliest or lowest subdivision of the Quaternary Period/System and Pleistocene Epoch/Series. It spans the time between 2.58 Ma (million years ago) and 1.80 Ma. It follows the Piacenzian Stage (part of the Pliocene) and is followed by the …