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International Chronostratigraphic Chart (v2020/03)

International Chronostratigraphic Chart (v2020/03)

Geology Page - November 14, 2020

International Chronostratigraphic Chart “Version 2018/08”

International Chronostratigraphic Chart “Version 2018/08”

International Chronostratigraphic Chart “Version 2017/02”

International Chronostratigraphic Chart (v2016/12)

International Chronostratigraphic Chart (v2016/04)

Ordovician Carbon Isotope Curve

Geology Page - June 25, 2015

International Chronostratigraphic Chart “Version (v2015/01)”

Geology Page - March 31, 2015

International Chronostratigraphic Chart “latest version (v 2014/10)”

Geology Page - December 24, 2014

International Chronostratigraphic Chart 2014

Geology Page - May 23, 2014

Ordovician Chronostratigraphic Chart

Geology Page - August 12, 2013

Global chronostratigraphical correlation table for the last 2.7 million years

Geology Page - June 8, 2013

International Chronostratigraphic Chart 2013

Geology Page - May 17, 2013

MOST POPULAR

Researchers discover fossils of new species in Arizona

October 17, 2020

Spectacular flying reptiles soared over Britain’s tropical Jurassic past

December 21, 2018

A schematic diagram of the Earth's deep oxygen factory shows the oxygenation and deoxygenation processes of hydrous mantle materials in the lower mantle across the ~1000 km depth beneath Earth's surface. Under the conditions of Earth's middle mantle, scientists discovered an oxygen-excess phase, (Mg,Fe)2O3+δ (0 < δ < 1) that can be formed with under-saturated water at >1000 kilometers depths. Those oxygen-excess materials may have long-termly oxidized the shallow mantle and the crust, which is essential to allow free oxygen to build up in Earth's atmosphere. Credit: Science China Press

Oxygen-excess oxides in Earth’s mid-mantle facilitate the ascent of deep oxygen

May 28, 2020

Rare cricket family sheds light on extinct Jurassic species’ acoustics

March 17, 2017

MORE ARTICLES

Geologic time scale

Quaternary Period

Three water-filled maars in the Eifel, Germany (Gemündener Maar, Weinfelder Maar, Schalkenmehrener Maar). Created by volcanic activity, maars are also found in other parts of Europe and on other continents, but Eifel-Maars are the classic example worldwide.

New hints of volcanism under the heart of northern Europe

Late Cretaceous Period Was Likely Ice-Free

Assessing regional earthquake risk and hazards in the age of exascale