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 |
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|
|
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 |
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 |