|Regional usage||Global (ICS)|
|Time scale(s) used||ICS Time Scale|
|Time span formality||Formal|
|Lower boundary definition||End of the Younger Dryas stadial.|
|Lower boundary GSSP||NGRIP2 ice core, Greenland|
75°06′00″N 42°19′12″W / 75.1000°N 42.3200°W
|Lower GSSP ratified||2008 (as base of Holocene)|
|Upper boundary definition||Present day|
|Upper boundary GSSP||N/A|
|Upper GSSP ratified||N/A|
The Holocene ( /ˈhɒl.əˌsiːn, ˈhɒl.oʊ-, ˈhoʊ.lə-, ˈhoʊ.loʊ-/) is the current geological epoch. It began approximately 11,650 cal years Before Present (c. 9701 BCE), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene has been identified with the current warm period, known as MIS 1. It is considered by some to be an interglacial period within the Pleistocene Epoch, called the Flandrian interglacial.
The Holocene corresponds with the rapid proliferation, growth and impacts of the human species worldwide, including all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global significance for the future evolution of living species, including approximately synchronous lithospheric evidence, or more recently hydrospheric and atmospheric evidence of the human impact. In July 2018, the International Union of Geological Sciences split the Holocene Epoch into three distinct ages based on the climate, Greenlandian (11,700 years ago to 8,200 years ago), Northgrippian (8,200 years ago to 4,200 years ago) and Meghalayan (4,200 years ago to the present), as proposed by International Commission on Stratigraphy. The oldest age, the Greenlandian was characterized by a warming following the preceding ice age. The Northgrippian Age is known for vast cooling due to a disruption in ocean circulations that was caused by the melting of glaciers. The most recent age of the Holocene is the present Meghalayan, which began with extreme drought that lasted around 200 years.
Powered by 654 easy search