RESEARCH BASE

Search 3,721 documents across 34 fields — every claim tier-rated by evidence

3,721 Documents 34 Sections 43,625 Citations 34,852 Keywords Indexed 4 Evidence Tiers

3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.

46 results for "paleoclimate" — page 3 of 3

E_0_00 Cataclysms & Chronology

E_0_00 — Cataclysms & Chronology: Section Summary

E_5_02 Verified Cataclysms & Chronology

E_5_02 — The Ordovician-Silurian Mass Extinction

The Late Ordovician mass extinction (c. 445–444 million years ago, at the Ordovician-Silurian boundary) was the second-most severe extinction event in Earth's history in terms of percentage of species lost — approximatel

Ordovician Silurian mass extinction Hirnantian glaciation Late Ordovician graptolites
O_5_00 Earth Anomalies

O_5_00 — Climate Records Ecology: Subfolder Summary

O_5_07 Verified Earth Anomalies

O_5_07 — Anoxic Events and Ocean Dead Zones: Deoxygenation Through Time

Oceanic Anoxic Events (OAEs) were episodes in Earth's history when large portions of the world's oceans became severely depleted of dissolved oxygen (anoxic) or enriched in toxic hydrogen sulfide (euxinic), causing wides

oceanic anoxic event OAE dead zone hypoxia anoxia deoxygenation
O_5_05 Verified Earth Anomalies

O_5_05 — Ice Ages and Milankovitch Cycles: Orbital Forcing of Climate

Ice ages — periods when massive continental ice sheets expand to cover large portions of Earth's surface — are among the most dramatic climate events in the planet's history. The Quaternary glaciation (beginning ~2.6 mil

ice age glacial interglacial Milankovitch orbital eccentricity
O_5_13 Verified Earth Anomalies

O_5_13 — Paleosols and Ancient Soils: Climate Records in Earth

Paleosols — ancient soils preserved in the geological record — are among the most valuable but often overlooked records of past environmental conditions. When soils are buried by subsequent sedimentation (flooding, volca

paleosol ancient soil pedogenesis climate proxy carbon isotope carbonates