Earth's air pressure 2.7 billion years ago constrained to less than half of modern levels

Isotopic evidence for biological nitrogen fixation by molybdenum-nitrogenase from 3.2 Gyr

(2015) Eva E. Stüeken et al.   NATURE

Nitrogen speciation in upper mantle fluids and the origin of Earth's nitrogen-rich atmosphere

(2014) Sami Mikhail et al.   Nature Geoscience

Nitrogen Isotopic Composition and Density of the Archean Atmosphere

(2013) Bernard Marty et al.   SCIENCE

Central Anatolian Plateau, Turkey: incision and paleoaltimetry recorded from volcanic rocks

(2013) Erkan AYDAR et al.   TURKISH JOURNAL OF EARTH SCIENCES

A late Mesozoic high plateau in eastern China: Evidence from basalt vesicular paleoaltimetry

(2012) GuoQing Xia et al.   CHINESE SCIENCE BULLETIN

Quantitative discrimination between geological materials with variable density contrast by high resolution X-ray computed tomography: An example using amygdule size-distribution in ancient lava flows

(2012) Sanjoy M. Som et al.   COMPUTERS & GEOSCIENCES

Air density 2.7 billion years ago limited to less than twice modern levels by fossil raindrop imprints

(2012) Sanjoy M. Som et al.   NATURE

Apatite 4He/3He and (U-Th)/He Evidence for an Ancient Grand Canyon

(2012) R. M. Flowers et al.   SCIENCE

Nitrogen isotopes in ophiolitic metagabbros: A re-evaluation of modern nitrogen fluxes in subduction zones and implication for the early Earth atmosphere

(2011) Vincent Busigny et al.   GEOCHIMICA ET COSMOCHIMICA ACTA

Nitrogen-enhanced greenhouse warming on early Earth

(2009) Colin Goldblatt et al.   Nature Geoscience