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Meteoritics & Planetary Science publishes research articles describing the latest results of new studies, invited reviews of major topics in planetary science, editorials on issues of current interest in the field, and book reviews. Topics include the origin and history of the solar system, planets and natural satellites, interplanetary dust and interstellar medium, lunar samples, meteors, and meteorites, asteroids, comets, craters, and tektites.

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Shock metamorphism of planetary silicate rocks and sediments: Proposal for an updated classification system

Schematic representation of the shock zoning and particle motion in an impact crater based on various older models (e.g., Dence et al. 1977; Grieve et al. 1977; O'Keefe and Ahrens 1978; Croft 1980; Kieffer and Simonds 1980; Orphal et al. 1980). For zones A (red), B (green), and C (blue), the main types of shock effects in the major minerals are (A) whole rock melting, (B) solid state deformations and phase transitions, and (C) mechanical deformations and fracturing. These zones and shock effects are typical for a target composed of crystalline felsic rocks. Maximum shock pressure at the contact of target and projectile (not shown) is assumed to reach 500 GPa corresponding to an impact velocity of about 18 km/s. Graph modified after Stöffler and Grieve (2007).

Experimental shock metamorphism of terrestrial basalts: Agglutinate-like particle formation, petrology, and magnetism

a) Schematic drawing of a shock experiment; the sample is situated in the sample holder in a cell. b) Example of a basaltic target after shock (shot 9) and a copper projectile.

Sulfide–oxide assemblages in Acfer 094—Clues to nebular metal–gas interactions

TEM-SAED patterns (a–d), TEM-BF (e, f), and STEM-HAADF (g, h) images of selected sulfide–oxide assemblages in FIB sections F01 and F03. a) 5.2C-pyrrhotite in zone-axis [110] from the central part of FIB section F01. b) Intergrowth of troilite (tro) and pyrrhotite (po) within the large matrix-sulfide grain from FIB section F01 in zone-axis [100]. Arrows show the respective reflections. c) 5.9C-pyrrhotite in twinned zone-axes [110] and [100] in FIB section F03. d) Magnetite in zone-axis [001] from the central part of FIB section F01. e) Close-up of sulfides from the outer part of the assemblage in F01. The intergrown pyrrhotite–troilite structures can be clearly observed. f) Close-up of sulfides and oxides from the inner part of the assemblage in F01. The boundary between the inner and the outer part is marked by the dotted line. g) Boundary zone of inner and outer parts in FIB section F01. Silicates of sub-μm to μm sizes occur solely in the outer part. The boundary is marked by the dotted line. h) Close-up of silicates and pyrrhotite–troilite from the outer part of FIB section F03. Pyrrhotite–troilite intergrowths can be observed. Po/Tro = pyrrhotite/troilite; Pn = pentlandite; Mag = magnetite; Sil = silicates (olivine/pyroxene).

A study of presolar material in hydrated lithic clasts from metal-rich carbonaceous chondrites

Secondary electron (SE), NanoSIMS isotopic ratio, and secondary ion (SI) images for three presolar silicates from LEW 85332. a) SE image of LEW_N_114, (b) 17O/16O ratio image of a 5 × 5 μm2 region containing LEW_N_114, (c) SI image of 28Si− for the same region. d, e) SE images of LEW_01B_12_1&2, (f) 17O/16O ratio image of a 5 × 5 μm2 region containing both grains, and (g) SI image of 28Si− for the same region. For the isotopic ratio images, the solar system value is marked by the white line on the color scale bar. The positions of the presolar grains are marked by white arrows in the 28Si− images. All three grains are clearly associated with Si-hotspots and can therefore be unambiguously identified as silicates. (Color figure can be viewed at wileyonlinelibrary.com)

A new mineralogical approach for CO3 chondrite characterization by X-ray diffraction: Identification of primordial phases and thermal history

a) Backscattered electron image of an Fe-Ni metal in ALH 77307. b) Enlarged view of the rectangular area in (a). c) Enlarged view of the rectangular area in (b). d) Enlarged view of the rectangular area in (c). Plessitic texture coexisting with kamacite (darker area) and high Ni taenite (~50 wt%) (brighter area) is observed. Kam = kamacite; Tae = taenite.

Articles

Article
Open access

Lunar meteorite Northwest Africa 11962: A regolith breccia containing records of titanium‐rich lunar volcanism and the high alkali suite

  •  14 May 2021
Article

Metal‐rich nodules in anomalous EL3 chondrite Northwest Africa (NWA) 8785

  •  13 May 2021
Article

The Long Duration Exposure Facility—A forgotten bridge between Apollo and Stardust

  •  8 May 2021
Article

A super‐refractory inclusion containing nonstoichiometric spinel from the CO3.0 chondrite Yamato 81020

  •  3 May 2021
Article
Open access

How do secondary iron enrichments form within basaltic eucrites? An experimental approach

  •  2 May 2021
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The following is a list of the most cited articles based on citations published in the last three years, according to CrossRef.

free access

Shock metamorphism of planetary silicate rocks and sediments: Proposal for an updated classification system

  •  5-49
  •  29 August 2017

Chemical analyses of meteorites: A compilation of stony and iron meteorite analyses

  •  323-337
  •  December 1990
free access

Modeling damage and deformation in impact simulations

  •  217-231
  •  26 January 2010
free access

Cometary glycine detected in samples returned by Stardust

  •  1323-1330
  •  26 January 2010
free access

Source regions and timescales for the delivery of water to the Earth

  •  1309-1320
  •  4 February 2010
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free access

The meteoritic origin of Tutankhamun's iron dagger blade

Open access

The fall, recovery, classification, and initial characterization of the Hamburg, Michigan H4 chondrite

free access

Libyan Desert Glass: New field and Fourier transform infrared data

The impact and recovery of asteroid 2018 LA

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The Meteoritical Bulletin, No. 106

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