POSC Specifications
Version 3.0
Epicentre Standard Values
temporal_period

temporal_period

Standard Instance Values

identifier description naming _system parent _period part _of _period source _reference source _content source version status
    naming _system .identifier temporal _period .identifier temporal _period .identifier       ref _version .identifier  
chronozone A non-hierarchical, commonly small, chronostatrigraphic unit. It is an isochronous unit that may be based on a biostratigraphic unit, on a lithostratigraphic unit, on a magnetopolarity unit, or on some other facet that allows the unit to be grouped as a common time. POSC basic     AGI Glossary of Geology POSC POSC epicentre 3.0 current
biozone A basic unit of a biostratigraphic classification. It is a body of rock characterized by its fossil content. POSC basic chronozone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
abundance A biozone characterized by quantitatively distinctive maxima of relative abundance of one or more taxa. It is essentially the same as acme zone. POSC basic biozone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
interval zone The biozone between two specified, documented lowest and/or highest occurrences of single taxa. Three basic types are recognized: taxon range zone, concurrent range zone, and lineage zone.. POSC basic biozone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
concurrent range zone The interval zone included between the documented lowest occurrence of one taxon and the documented highest occurrence of another taxon, resulting in stratigraphic overlap of the two taxa.. POSC basic biozone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
lineage zone The interval zone between successive documented lowest occurrences within an evolutionalry lineage.. POSC basic biozone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
assemblage A biozone characterized by the association of three or more taxa. It may be based on all kinds of fossils present, or restricted to only certain kinds of fossils. It may consist of a geographically or stratigraphically restricted assemblage, or may incorporate two or more contemporaneous assemblages with shared characteristic taxa. The assemblage zone is named from one or more of the fossils particularly representative of the assemblage. POSC basic biozone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
geochronologic zone A division of time traditionally distinguished on the basis of the rock record as expressed by a chronostatrigraphic unit. It is not a material unit, but corresponds to the time span of an established chronostratigraphic unit. POSC basic     AGI Glossary of Geology POSC POSC epicentre 3.0 current
eon The geochronologic unit of highest rank. POSC basic geochronologic zone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
Phanerozoic The part of the geologic time represented by rocks in which the evidence of life is abundant. Cambrian and later time. POSC basic eon   AGI Glossary of Geology POSC POSC epicentre 2.1 current
Precambrian All geologic time before the Phanerozoic. POSC basic eon   AGI Glossary of Geology POSC POSC epicentre 2.1 current
era The formal geochronologic unit next in order of magnitude below an eon. POSC basic geochronologic zone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
Cenozoic An era of time from the beginning of the Tertiary to the present. It encompasses about the last 65 million years. POSC basic era Phanerozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Mesozoic An era of geologic time from the end of the Paleozoic to the beginning of the Cenozoic. It is from about 225 million years bp to about 65 million years bp. POSC basic era Phanerozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Paleozoic An era of geologic time, from the end of the Precambrian to the beginning of the Mesozoic. It is from about 570 million years bp to 225 million years bp. POSC basic era Phanerozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Proterozoic The more recent of the two great divisions of the Precambrian. POSC basic era Precambrian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Archean The earlier part of the Precambrian time. POSC basic era Precambrian AGI Glossary of Geology POSC POSC epicentre 2.1 current
period The geochronologic unit lower in rank than the era. POSC basic geochronologic zone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
Quaternary The second period of the Cenozoic, following the Tertiary. It began 2 to 3 million years ago and extends to the present. POSC basic period Cenozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current

temporal_period

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identifier description naming _system parent _period part _of _period source _reference source _content source version status
Tertiary The first period of the Cenozoic. It covers a range of about 65 million years bp to 2 to 3 million years bp. POSC basic period Cenozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Cretaceous The final period of the Mesozoic, thought to cover from about 135 million years bp to 65 million years bp. POSC basic period Mesozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Jurassic The second period of the Mesozoic, thought to cover from about 190 million years bp to 135 million years bp. POSC basic period Mesozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Triassic The first period of the Mesozoic, thought to cover from about 225 million years bp to 190 million years bp. POSC basic period Mesozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Permian The last period of the Paleozoic, thought to cover from about 280 million years bp to 225 million years bp. POSC basic period Paleozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Pennsylvanian A period of the Paleozoic, used primarily in the western hemisphere, that covers from about 320 million years bp to about 280 millions years bp. POSC basic period Paleozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Mississippian A period of the Paleozoic, used primarily in the western hemisphere, though to cover from about 345 million years bp to 320 million years bp. POSC basic period Paleozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Carboniferous A period of the Paleozoic, used primarily in the eastern hemisphere, though to cover from about 345 million years bp to 280 million years bp. POSC basic period Paleozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Devonian A period of the Paleozoic, used primarily in the western hemisphere, though to cover from about 400 million years bp to 345 million years bp. POSC basic period Paleozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Silurian A period of the Paleozoic, used primarily in the western hemisphere, though to cover from about 440 million years bp to 400 million years bp. POSC basic period Paleozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Ordovician A period of the Paleozoic, used primarily in the western hemisphere, though to cover from about 500 million years bp to 440 million years bp. POSC basic period Paleozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Cambrian A period of the Paleozoic, used primarily in the western hemisphere, though to cover from about 570 million years bp to 500 million years bp. POSC basic period Paleozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Proterozoic Z An informal period of the Proterozoic Era. It occurs directly before the Cambrian. POSC basic period Proterozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Proterozoic Y An informal period of the Proterozoic Era. It occurs between the Proterozoic X and the Proterozoic Z. POSC basic period Proterozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Proterozoic X An informal period of the Proterozoic Era. It occurs directly before the Proterozoic Y. POSC basic period Proterozoic AGI Glossary of Geology POSC POSC epicentre 2.1 current
epoch The geochronologic unit lower in rank than a period. POSC basic geochronologic zone   AGI Glossary of Geology POSC POSC epicentre 3.0 current
Holocene   POSC basic epoch Quarternary AGI Glossary of Geology POSC POSC epicentre 2.1 current
Pleistocene   POSC basic epoch Quarternary AGI Glossary of Geology POSC POSC epicentre 2.1 current
Pliocene   POSC basic epoch Tertiary AGI Glossary of Geology POSC POSC epicentre 2.1 current
Miocene   POSC basic epoch Tertiary AGI Glossary of Geology POSC POSC epicentre 2.1 current

temporal_period

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identifier description naming _system parent _period part _of _period source _reference source _content source version status
Oligocene   POSC basic epoch Tertiary AGI Glossary of Geology POSC POSC epicentre 2.1 current
Eocene   POSC basic epoch Tertiary AGI Glossary of Geology POSC POSC epicentre 2.1 current
Paleocene   POSC basic epoch Tertiary AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Cretaceous   POSC basic epoch Cretaceous AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Cretaceous   POSC basic epoch Cretaceous AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Jurassic   POSC basic epoch Jurassic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Middle Jurassic   POSC basic epoch Jurassic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Jurassic   POSC basic epoch Jurassic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Triassic   POSC basic epoch Triassic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Middle Triassic   POSC basic epoch Triassic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Triassic   POSC basic epoch Triassic AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Permian   POSC basic epoch Permian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Permian   POSC basic epoch Permian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Pennsylvanian   POSC basic epoch Pennsylvanian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Middle Pennsylvanian   POSC basic epoch Pennsylvanian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Pennsylvanian   POSC basic epoch Pennsylvanian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Mississippian   POSC basic epoch Mississippian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Mississippian   POSC basic epoch Mississippian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Carboniferous It corresponds roughly to the Pennsylvanian. POSC basic epoch Carboniferous AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Carboniferous It corresponds roughly to the Mississippian. POSC basic epoch Carboniferous AGI Glossary of Geology POSC POSC epicentre 2.1 current

temporal_period

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identifier description naming _system parent _period part _of _period source _reference source _content source version status
Late Devonian   POSC basic epoch Devonian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Middle Devonian   POSC basic epoch Devonian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Devonian   POSC basic epoch Devonian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Silurian   POSC basic epoch Silurian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Silurian   POSC basic epoch Silurian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Ordovician   POSC basic epoch Ordovician AGI Glossary of Geology POSC POSC epicentre 2.1 current
Middle Ordovician   POSC basic epoch Ordovician AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Ordovician   POSC basic epoch Ordovician AGI Glossary of Geology POSC POSC epicentre 2.1 current
Late Cambrian   POSC basic epoch Cambrian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Middle Cambrian   POSC basic epoch Cambrian AGI Glossary of Geology POSC POSC epicentre 2.1 current
Early Cambrian   POSC basic epoch Cambrian AGI Glossary of Geology POSC POSC epicentre 2.1 current
age The geochronologic unit lower in rank than the epoch. POSC basic geochronologic zone   AGI Glossary of Geology POSC POSC epicentre 3.0 current

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