American Journal of Science

Aims & Scope

The American Journal of Science (AJS), founded in 1818 by Benjamin Silliman, is the oldest scientific journal in the United States that has been published continuously.

The Journal is devoted to geology and related sciences and publishes articles from around the world presenting results of major research from all earth sciences.

Readers are primarily earth scientists in academia and government institutions.

View Aims & Scope

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Metrics & Ranking

Impact Factor

Year	Value
2025	2.5

SJR (SCImago Journal Rank)

Year	Value
2024	1.273

Quartile

Year	Value
2024	Q1

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Abstracting & Indexing

Journal is indexed in leading academic databases, ensuring global visibility and accessibility of our peer-reviewed research.

• Scopus
• Google Scholar
• Web of Science

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Subjects & Keywords

Journal’s research areas, covering key disciplines and specialized sub-topics in Earth and Planetary Sciences, designed to support cutting-edge academic discovery.

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Most Cited Articles

The Most Cited Articles section features the journal's most impactful research, based on citation counts. These articles have been referenced frequently by other researchers, indicating their significant contribution to their respective fields.

• Volcanic rock series in island arcs and active continental margins

  Citation: 2009

  Authors: A.

• The carbonate-silicate geochemical cycle and its effect on atmospheric carbon dioxide over the past 100 million years

  Citation: 1892

  Authors: R. A., A. C., R. M.

• Carbon, nitrogen, and phosphorus transport by world rivers

  Citation: 1689

  Authors: M.

• Theoretical prediction of the thermodynamic behavior of aqueous electrolytes by high pressures and temperatures; IV, Calculation of activity coefficients, osmotic coefficients, and apparent molal and standard and relative partial molal properties to 600 degrees C and 5kb

  Citation: 1517

  Authors: H. C., D. H., G. C.

• Geometry and kinematics of fault-bend folding

  Citation: 1332

  Authors: J.

• Global chemical weathering of surficial rocks estimated from river dissolved loads

  Citation: 1310

  Authors: M.

• Sedimentary pyrite formation

  Citation: 1223

  Authors: R. A.

• Thermodynamics of hydrothermal systems at elevated temperatures and pressures

  Citation: 1169

  Authors: H. C.

• GEOCARB III: A revised model of atmospheric CO2 over Phanerozoic time

  Citation: 1093

  Authors: R. A.

• Regional stratigraphy of the Zagros fold-thrust belt of Iran and its proforeland evolution

  Citation: 1064

  Authors: M.

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