The Winchcombe meteorite—A regolith breccia ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
The Winchcombe meteorite—A regolith breccia from a rubble pile CM chondrite asteroid
Auteur(s) :
Suttle, M. D. [Auteur]
The Open University [Milton Keynes] [OU]
Daly, L. [Auteur]
Jones, R. H. [Auteur]
University of Manchester [Manchester]
Jenkins, L. [Auteur]
Van Ginneken, M. [Auteur]
University of Kent [Canterbury]
Mitchell, J. T. [Auteur]
Plymouth University
Bridges, J. C. [Auteur]
University of Leicester
Hicks, L. J. [Auteur]
University of Leicester
Johnson, D. [Auteur]
Cranfield University
Rollinson, G. [Auteur]
University of Exeter
Taylor, R. [Auteur]
Genge, M. J. [Auteur]
Imperial College London
Schröder, C. [Auteur]
University of Stirling
Trimby, P. [Auteur]
University of Oxford
Mansour, H. [Auteur]
University of Oxford
Piazolo, S. [Auteur]
University of Leeds
Bonsall, E. [Auteur]
University of Stirling
Salge, T. [Auteur]
The Natural History Museum [London] [NHM]
Heard, R. [Auteur]
The Natural History Museum [London] [NHM]
Findlay, R. [Auteur]
The Open University [Milton Keynes] [OU]
King, A. J. [Auteur]
The Natural History Museum [London] [NHM]
Bates, H. C. [Auteur]
The Natural History Museum [London] [NHM]
Lee, M. R. [Auteur]
School of Geographical and Earth Sciences, University of Glasgow
Stephen, N. R. [Auteur]
Plymouth University
Willcocks, F. M. [Auteur]
Plymouth University
Greenwood, R. C. [Auteur]
The Open University [Milton Keynes] [OU]
Franchi, I. A. [Auteur]
The Open University [Milton Keynes] [OU]
Russell, S. S. [Auteur]
The Natural History Museum [London] [NHM]
Harrison, C. S. [Auteur]
The Natural History Museum [London] [NHM]
Schofield, P. F. [Auteur]
The Natural History Museum [London] [NHM]
Almeida, N. V. [Auteur]
The Natural History Museum [London] [NHM]
Floyd, C. [Auteur]
Martin, P.‐E. [Auteur]
Joy, K. H. [Auteur]
University of Manchester [Manchester]
Wozniakiewicz, P. J. [Auteur]
Hallatt, Daniel [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Burchell, M. J. [Auteur]
University of Kent [Canterbury]
Alesbrook, L. S. [Auteur]
University of Kent [Canterbury]
Spathis, V. [Auteur]
University of Kent [Canterbury]
Cornwell, L. T. [Auteur]
University of Kent [Canterbury]
Dignam, A. [Auteur]
University of Kent [Canterbury]
The Open University [Milton Keynes] [OU]
Daly, L. [Auteur]
Jones, R. H. [Auteur]
University of Manchester [Manchester]
Jenkins, L. [Auteur]
Van Ginneken, M. [Auteur]
University of Kent [Canterbury]
Mitchell, J. T. [Auteur]
Plymouth University
Bridges, J. C. [Auteur]
University of Leicester
Hicks, L. J. [Auteur]
University of Leicester
Johnson, D. [Auteur]
Cranfield University
Rollinson, G. [Auteur]
University of Exeter
Taylor, R. [Auteur]
Genge, M. J. [Auteur]
Imperial College London
Schröder, C. [Auteur]
University of Stirling
Trimby, P. [Auteur]
University of Oxford
Mansour, H. [Auteur]
University of Oxford
Piazolo, S. [Auteur]
University of Leeds
Bonsall, E. [Auteur]
University of Stirling
Salge, T. [Auteur]
The Natural History Museum [London] [NHM]
Heard, R. [Auteur]
The Natural History Museum [London] [NHM]
Findlay, R. [Auteur]
The Open University [Milton Keynes] [OU]
King, A. J. [Auteur]
The Natural History Museum [London] [NHM]
Bates, H. C. [Auteur]
The Natural History Museum [London] [NHM]
Lee, M. R. [Auteur]
School of Geographical and Earth Sciences, University of Glasgow
Stephen, N. R. [Auteur]
Plymouth University
Willcocks, F. M. [Auteur]
Plymouth University
Greenwood, R. C. [Auteur]
The Open University [Milton Keynes] [OU]
Franchi, I. A. [Auteur]
The Open University [Milton Keynes] [OU]
Russell, S. S. [Auteur]
The Natural History Museum [London] [NHM]
Harrison, C. S. [Auteur]
The Natural History Museum [London] [NHM]
Schofield, P. F. [Auteur]
The Natural History Museum [London] [NHM]
Almeida, N. V. [Auteur]
The Natural History Museum [London] [NHM]
Floyd, C. [Auteur]
Martin, P.‐E. [Auteur]
Joy, K. H. [Auteur]
University of Manchester [Manchester]
Wozniakiewicz, P. J. [Auteur]
Hallatt, Daniel [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Burchell, M. J. [Auteur]
University of Kent [Canterbury]
Alesbrook, L. S. [Auteur]
University of Kent [Canterbury]
Spathis, V. [Auteur]
University of Kent [Canterbury]
Cornwell, L. T. [Auteur]
University of Kent [Canterbury]
Dignam, A. [Auteur]
University of Kent [Canterbury]
Titre de la revue :
Meteoritics & Planetary Science
Nom court de la revue :
Meteorit & Planetary Scien
Éditeur :
Wiley
Date de publication :
2022-12-21
Discipline(s) HAL :
Chimie/Matériaux
Résumé en anglais : [en]
AbstractThe Winchcombe meteorite is a CM chondrite breccia composed of eight distinct lithological units plus a cataclastic matrix. The degree of aqueous alteration varies between intensely altered CM2.0 and moderately ...
Lire la suite >AbstractThe Winchcombe meteorite is a CM chondrite breccia composed of eight distinct lithological units plus a cataclastic matrix. The degree of aqueous alteration varies between intensely altered CM2.0 and moderately altered CM2.6. Although no lithology dominates, three heavily altered rock types (CM2.1–2.3) represent >70 area%. Tochilinite–cronstedtite intergrowths (TCIs) are common in several lithologies. Their compositions can vary significantly, even within a single lithology, which can prevent a clear assessment of alteration extent if only TCI composition is considered. We suggest that this is due to early alteration under localized geochemical microenvironments creating a diversity of compositions and because later reprocessing was incomplete, leaving a record of the parent body's fluid history. In Winchcombe, the fragments of primary accretionary rock are held within a cataclastic matrix (~15 area%). This material is impact‐derived fallback debris. Its grain size and texture suggest that the disruption of the original parent asteroid responded by intergranular fracture at grain sizes <100 μm, while larger phases, such as whole chondrules, splintered apart. Re‐accretion formed a poorly lithified body. During atmospheric entry, the Winchcombe meteoroid broke apart with new fractures preferentially cutting through the weaker cataclastic matrix and separating the breccia into its component clasts. The strength of the cataclastic matrix imparts a control on the survival of CM chondrite meteoroids. Winchcombe's unweathered state and diversity of lithologies make it an ideal sample for exploring the geological history of the CM chondrite group.Lire moins >
Lire la suite >AbstractThe Winchcombe meteorite is a CM chondrite breccia composed of eight distinct lithological units plus a cataclastic matrix. The degree of aqueous alteration varies between intensely altered CM2.0 and moderately altered CM2.6. Although no lithology dominates, three heavily altered rock types (CM2.1–2.3) represent >70 area%. Tochilinite–cronstedtite intergrowths (TCIs) are common in several lithologies. Their compositions can vary significantly, even within a single lithology, which can prevent a clear assessment of alteration extent if only TCI composition is considered. We suggest that this is due to early alteration under localized geochemical microenvironments creating a diversity of compositions and because later reprocessing was incomplete, leaving a record of the parent body's fluid history. In Winchcombe, the fragments of primary accretionary rock are held within a cataclastic matrix (~15 area%). This material is impact‐derived fallback debris. Its grain size and texture suggest that the disruption of the original parent asteroid responded by intergranular fracture at grain sizes <100 μm, while larger phases, such as whole chondrules, splintered apart. Re‐accretion formed a poorly lithified body. During atmospheric entry, the Winchcombe meteoroid broke apart with new fractures preferentially cutting through the weaker cataclastic matrix and separating the breccia into its component clasts. The strength of the cataclastic matrix imparts a control on the survival of CM chondrite meteoroids. Winchcombe's unweathered state and diversity of lithologies make it an ideal sample for exploring the geological history of the CM chondrite group.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Équipe(s) de recherche :
Matériaux Terrestres et Planétaires
Date de dépôt :
2024-01-06T08:49:52Z
2024-01-26T12:16:50Z
2024-01-26T12:18:15Z
2024-01-26T12:16:50Z
2024-01-26T12:18:15Z
Fichiers
- Meteorit Planetary Scien - 2022 - Suttle - The Winchcombe meteorite A regolith breccia from a rubble pile CM chondrite.pdf
- Version éditeur
- Accès libre
- Accéder au document