The Kumtag 016 L5 strewn field, Xinjiang Province, China

Zeng, Xiaojia; Li, Shijie; Leya, I.; Wang, Shijie; Smith, Thomas; Li, Yang; Wang, Peng

doi:10.1111/maps.13073

Cited by 13 publications

(11 citation statements)

References 61 publications

(85 reference statements)

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“…1b). Also evident in our data, are anomalies in Sr, Ba, REE, Hf, Th and U contents, which are well-known indicators of hot desert weathering (Al-Kathiri et al, 2005;Barrat et al, 2003;Folco et al, 2007;Hezel et al, 2011;Hofmann et al, 2018;Moore and Brown, 1963;Pourkhorsandi et al, 2017a;Saunier et al, 2010;Stelzner et al, 1999;Zeng et al, 2018;Zurfluh et al, 2012). In comparison, Antarctic meteorites show less chemical modification than those from the hot deserts (Fig.…”

Section: Samarium-nd Systematicssupporting

confidence: 59%

The effects of terrestrial weathering on samarium‑neodymium isotopic composition of ordinary chondrites

et al. 2021

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: Samarium-nd Systematicssupporting

confidence: 59%

The effects of terrestrial weathering on samarium‑neodymium isotopic composition of ordinary chondrites

et al. 2021

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“…; Zeng et al. ). Finding new meteorite dense collection areas (DCAs) is important for (1) discovering new types of meteorites (e.g., Bischoff ; Kent et al.…”

Section: Introductionmentioning

confidence: 98%

“…Besides Antarctica (Harvey 2003), hot deserts are suitable places for the preservation, the accumulation, and the subsequent recovery of meteorites. High numbers of meteorites have been collected and studied from arid regions such as Atacama (Muñoz et al 2007;Gattacceca et al 2011;Hutzler et al 2016), Sahara (Bischoff and Geiger 1995;Schl€ uter et al 2002;Ouazaa et al 2009), Australian deserts (Bevan and Binns 1989;Bevan 1992;Benedix et al 1999), Arabian Peninsula (Al-Kathiri et al 2005;Gnos et al 2009;Hezel et al 2011;Hofmann et al 2018), central (Rubin and Read 1984;Merriam and Harbaugh 2007) and southwestern United States (Zolensky et al 1990;Rubin et al 2000;Kring et al 2001;Hutson et al 2013), and Xinjiang Province in China (Li et al 2017;Zeng et al 2018). Finding new meteorite dense collection areas (DCAs) is important for (1) discovering new types of meteorites (e.g., Bischoff 2001;Kent et al 2017;Pourkhorsandi et al 2017a), (2) providing more samples for statistical works on the meteorite flux (e.g., Bland et al 1996), (3) studying meteorite fall process by mapping strewnfields resulting from meteorite showers (e.g., Kring et al 2001;Gnos et al 2009), and (4) studying the alteration of extraterrestrial material in the terrestrial environment (Bland et al 2006;Saunier et al 2010;Uehara et al 2012;Zurfluh et al 2016;Pourkhorsandi et al 2017b) also in relation with paleoclimate (Bland et al 1998;…”

Section: Introductionmentioning

confidence: 99%

Meteorites from the Lut Desert (Iran)

Pourkhorsandi

Gattacceca

Rochette

et al. 2019

Meteorit & Planetary Scien

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We present for the first time a detailed report on the discovery of a new meteorite collection region in the Lut Desert, eastern–southeastern Iran, describing its geological, morphological, and climatic setting. Our search campaigns, alongside with the activity of meteorite hunters, yielded >200 meteorite finds. Here, we report on their classification, spatial distribution, and terrestrial weathering. All the collected meteorites are ordinary chondrites (OCs). The most abundant by far are the highly weathered paired H5 distributed in the northwest of Kalut area (central Lut, Kerman dense collection area). The second are well‐preserved paired L5 also found in Kalut region. A detailed study of the geochemistry and mineralogy of selected meteorites reveals significant effects of terrestrial weathering. Fe,Ni metal (hereafter simply metal) and troilite are transformed into Fe oxyhydroxides. A rather unusual type of troilite weathering to pyrite/marcasite is observed in most of the Lut Desert meteorites. Magnetic measurements and X‐ray diffractometry confirm the occurrence of terrestrial weathering products, with the dominance of maghemite, goethite, and hematite. Mobile elements, such as Li, Sr, Mo, Ba, Tl, Th, and U, are enriched with respect to fresh falls. Meanwhile, a decrease in the V, Cr, Co, Rb (and possibly Fe) due to terrestrial weathering is detectable. The total carbon and CaCO3 is higher than in samples from other hot deserts. The weathering effects observed in the Lut Desert OCs can be used as distinctive indicators to distinguish them from meteorites from other regions of the Earth. Measurements of terrestrial age (14C) show a range of 10–30 ka, which is in the range of ages reported for meteorites from other hot deserts except the Atacama Desert (Chile). Considering the high potential of the Lut Desert in meteorite preservation, systematic works should lead to the discovery of more samples giving access to interesting material for future studies.

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“…5e of Zeng et al. 2018b). This interpretation is consistent with our observations in clasts V1 and V2 that contain irregular crystalline pyroxene with fractures/cracks terminating at the boundaries of plagioclase grains (e.g., Fig.…”

Section: Discussionmentioning

confidence: 95%

“…(2) A number of mineral phases (e.g., silicate grain, FeNi metal, troilite, and glass) are commonly observed in a shock‐induced melt veins (e.g., Tomioka and Miyahara ; Zeng et al. 2018b). Such mineralogy is largely different in the mineral assemblages (i.e., olivine, plagioclase, and chromite) of olivine veinlets in NWA 11273.…”

Section: Discussionmentioning

confidence: 99%

Occurrence and implications of secondary olivine veinlets in lunar highland breccia Northwest Africa 11273

Zeng

Joy

et al. 2019

Meteorit & Planetary Scien

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Lunar breccias preserve the records of geologic processes on the Moon. In this study, we report the occurrence, petrography, mineralogy, and geologic significance of the observed secondary olivine veinlets in lunar feldspathic breccia meteorite Northwest Africa (NWA) 11273. Bulk-rock composition measurements show that this meteorite is geochemically similar to other lunar highland meteorites. In NWA 11273, five clasts are observed to host veinlets that are dominated by interconnecting olivine mineral grains. The host clasts are mainly composed of mafic minerals (i.e., pyroxene and olivine) and probably sourced from a basaltic lithology. The studied olivine veinlets (~5 to 30 lm in width) are distributed within the mafic mineral host, but do not extend into the adjacent plagioclase. Chemically, these olivine veinlets are Fe-richer (Fo 41.4-51.9), compared with other olivine grains (Fo 54.3-83.1) in lithic clasts and matrix of NWA 11273. By analogy with the secondary olivine veinlets observed in meteorites from asteroid Vesta (howardite-eucrite-diogenite group samples) and lunar mare samples, our study suggests that the newly observed olivine veinlets in NWA 11273 are likely formed by secondary deposition from a lunar fluid, rather than by crystallization from a high-temperature silicate melt. Such fluid could be sulfur-and phosphorous-poor and likely had an endogenic origin on the Moon. The new occurrence of secondary olivine veinlets in breccia NWA 11273 reveals that the fluid mobility and deposition could be a previously underappreciated geological process on the Moon.

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The Kumtag 016 L5 strewn field, Xinjiang Province, China

Cited by 13 publications

References 61 publications

The effects of terrestrial weathering on samarium‑neodymium isotopic composition of ordinary chondrites

The effects of terrestrial weathering on samarium‑neodymium isotopic composition of ordinary chondrites

Meteorites from the Lut Desert (Iran)

Occurrence and implications of secondary olivine veinlets in lunar highland breccia Northwest Africa 11273

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