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[11] [12] Thus, the criteria, i.e. (1.) its sediments being all of the same age, (2.) it consisting of sediments deposited during a single interglacial period, and (3,) as originally defined by Leverett in 1898 consist of interglacial sediments, by which the Yarmouthian (Yarmouth) Interglacial (Stage) was defined and recognized have all been ...
Reconstruction era (1865–1877) (Some of this time period is known as the "Old West".) Gilded Age (1877–1896) Fourth Party System (1896–1932) Progressive Era (1896–1917) United States in World War I (1917–1918) Roaring Twenties (1920–1929) Fifth Party System (1932–1980) Great Depression (1929–1939)
This work assessed the geologic history of the currently defined eons and eras of the pre-Cambrian, [note 2] and the proposals in the "Geological Time Scale" books 2004, [74] 2012, [5] and 2020. [75] Their recommend revisions [4] of the pre-Cryogenian geologic time scale were (changes from the current scale [v2023/09] are italicised):
The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous Epoch, or a stage in the Upper Cretaceous Series. It spans the time between 93.9 ± 0.8 Ma and 89.8 ± 1 Ma (million years ago). The Turonian is preceded by the Cenomanian Stage and underlies the Coniacian Stage. [3]
Annals of the Former World is a book on geology written by John McPhee and published in 1998 by Farrar, Straus and Giroux. [1] It won the 1999 Pulitzer Prize for General Nonfiction. [2] The book presents a geological history of North America, and was researched and written over
The Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous Epoch / Series . Its approximate time range is 113.0 ± 1.0 Ma to 100.5 ± 0.9 Ma (million years ago).
The Great Valley Sequence of California is a 40,000-foot (12 km)-thick group of related geologic formations that are Late Jurassic through Cretaceous in age (150–65 Ma) on the geologic time scale. These sedimentary rocks were deposited during the late Mesozoic Era in an ancient seaway that corresponds roughly to the outline of the modern ...
1743 – Dr Christopher Packe produces a geological map of south-east England 1746 – Jean-Étienne Guettard presents the first mineralogical map of France to the French Academy of Sciences . 1760 – John Michell suggests earthquakes are caused by one layer of rocks rubbing against another