Rapid growth of magnesium-carbonate weathering products in a stony meteorite from Antarctica

A. J.T. Jull, S. Cheng, J. L. Gooding, M. A. Velbel

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Nesquehonite, a hydrous magnesium carbonate, occurs as a weathering product on the surface of the Antarctic meteorite LEW 85320 (H5 chondrite). Antarctic meteorites have resided on the earth for periods of 104 to 10 6 years, but the time needed for weathering products to form has been uncertain. Isotopic measurements of δ13C and δ18O indicate that the nesquehonite formed at near freezing temperatures by reaction of meteoritic minerals with terrestrial water and carbon dioxide. Results from carbon-14 dating suggest that, although the meteorite has been in Antarctica for at least 3.2 × 104 to 3.3 × 104 years, the nesquehonite formed after A.D. 1950.

Original languageEnglish (US)
Pages (from-to)417-419
Number of pages3
JournalScience
Volume242
Issue number4877
DOIs
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Rapid growth of magnesium-carbonate weathering products in a stony meteorite from Antarctica'. Together they form a unique fingerprint.

Cite this