Geologic time scale
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The geologic time scale or geological time scale describes how geologic time is divided into standardised intervals. It uses the rock record together with the principles of chronostratigraphy to place
Sketch of the Succession of Strata and their Relative Altitudes (William Smith)
One example of an obsolete geological time scale (France, mid-1940s).
Marine sandglass MMM
Holocene
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The Holocene is the current geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the prec
Geologic time scale
…geochronologic unit. It is equivalent to a chronostratigraphic series. There are 37 defined epochs and one informal one. The current epoch is the Holocene. There are also 11 subepochs which are all within the Neogene and Quaternary. The use of subepochs as formal units in international chronostratigraphy…
A model of Çatalhöyük, a commonly cited example of a proto-city, 7300 BC
Stages of proglacial lake development in the region of the current North American Great Lakes
Holocene cinder cone volcano on Utah State Route 18 near Veyo
Bronze bead necklace, Muséum de Toulouse