δ18O

Aqueous alteration in C2-ung Bells through the analysis of carbonates – Does a CR origin ring true?OPEN ACCESS

20/04/2026 15:55 · by karmaka · in carbonaceous chondrite, chondrite classification, CR, oxygen isotopes, ungrouped

L. J. Riches, M. D. Suttle, I. A. Franchi, X. Zhao, M. M. Grady MAPS, Version of Record online: 20 April 2026 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “Bells is an ungrouped carbonaceous chondrite that…

Carbon and oxygen isotope compositions in calcite from the CM chondrites Aguas Zarcas and MIL 13005: Implications for O and C sources and alteration conditions

12/04/2026 18:59 · by karmaka · in Aguas Zarcas, aqueous alteration, carbonaceous chondrite, CM, witnessed fall

S.P. Goudy, M. Telus, K. Nagashima, G.R. Huss Geochimica et Cosmochimica Acta, In Press, Journal Pre-proof, Available online 12 April 2026 LINK “Here we present petrographic, O isotope, and C isotope data on calcite and…

Triple oxygen and hydrogen stable isotope composition of hydroxyl water in Orgueil (CI-type) and Tagish Lake (C2-type) carbonaceous chondrites

27/02/2026 23:58 · by karmaka · in aqueous alteration, carbonaceous chondrite, CI, oxygen isotopes, Tagish Lake, ungrouped, witnessed fall

Erik J.H. Oerter, Christopher D.K. Herd, Conel M.O’D. Alexander Geochimica et Cosmochimica Acta, In Press, Journal Pre-proof, Available online 27 February 2026 LINK “The primitive carbonaceous chondrites are of interest to cosmochemical science because they…

Aqueous alteration in the C2-ung Tarda meteorite: in situ isotopic evidence from dolomite and magnetite

21/12/2025 17:56 · by karmaka · in aqueous alteration, carbonaceous chondrite, Tarda, ungrouped, witnessed fall

Bennett J.K. Wilson, Kazuhide Nagashima, Thomas J. Barrett, Veronica E. Di Cecco, Kimberly T. Tait, Michael G. Daly Geochimica et Cosmochimica Acta, In Press, Journal Pre-proof, Available online 21 December 2025 LINK “The Tarda meteorite…

Triple oxygen isotopes of lunar water unveil indigenous and cometary heritageOPEN ACCESS

16/12/2024 23:13 · by karmaka · in carbonaceous chondrite, CI, enstatite chondrite, ordinary chondrite, oxygen isotopes, water

Maxwell M. Thiemens, Morgan H. Nunn Martinez, and Mark H. Thiemens PNASDecember 16, 2024121 (52) e23210691 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The origin of water in the Earth-Moon system is a pivotal question in planetary…

Oxygen Ablation during Atmospheric Entry: Its Influence on the Isotopic Composition of MicrometeoritesOPEN ACCESS

16/11/2022 18:39 · by karmaka · in asteroid, C-type, meteor/meteoroid/bolide, micrometeorites

N. G. Rudraswami, M. Pandey, D. Fernandes, J. D. Carrillo-Sánchez, W. Feng, J. M. C. Plane, and V. P. Singh The Astrophysical Journal, Volume 940, Number 1Published 16 November 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS)…

Giant impacts and the origin and evolution of continents

10/08/2022 18:54 · by karmaka · in Earth, impact / impact-structures

Tim E. Johnson, Christopher L. Kirkland, Yongjun Lu, R. Hugh Smithies, Michael Brown & Michael I. H. Hartnady Nature, Volume 608, pages 330–335 (2022)Published: 10 August 2022 LINK “Earth is the only planet known to…

Oxygen and carbon stable isotope composition of the weathering Mg‐carbonates formed on the surface of the LEW 85320 ordinary chondrite: Revisited

26/09/2020 15:27 · by karmaka · in ordinary chondrite, terrestrial weathering

Mohammed I. El‐Shenawy, Paul B. Niles, Doug W. Ming, Rick Socki, Kevin Righter Meteoritics & Planetary ScienceFirst Published: 26 September 2020 LINK “New δ13C and δ18O values were measured to constrain the formation mechanisms of…