Chronology
Popularity Index: 237 Updated at 2026-10-17 09:49 UTCSites
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The iridium anomaly at the K-Pg boundary: how the Alvarez team found an asteroid
The Permian-Triassic clay layer that marks 96 percent of marine species gone
Tree rings pinned the Norse settlement at L'Anse aux Meadows to a single year
Why the Quaternary was redefined and the Holocene start moved to 11700 years ago
What is the difference between a relative sequence and an absolute date?
Radiocarbon dating is useless without the calibration curve and the curve rewrote Egyptian chronology
An Assyrian record of a solar eclipse fixed the reign of an entire dynasty
Westinghouse buried a capsule in 1939 with instructions for the year 6939
Egyptian king lists and the Sothic cycle dated pharaohs before radiocarbon existed
Archives file by provenance first and by date second and the order matters
Siccar Point in 1788: the unconformity that made deep time thinkable
Carbon-14 runs out at about 50000 years and deeper time needs other isotopes
Geological periods are defined by rock layers and their absolute dates are a separate layer of work
The Anthropocene was voted down in 2024: why geologists refused to end the Holocene
A parish register's entries are not in the order the volume was written
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