Matches in SemOpenAlex for { <https://semopenalex.org/work/W763905249> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W763905249 abstract "The paired howardite breccias Mt. Pratt (PRA) 04401 and PRA 04402 are notable for their high proportion of carbonaceous chondrite clasts [1]. They consist predominantly of coarse (0.1-7 mm) diogenite (orthopyroxene), eucrite (plagioclase + pyroxene), and carbonaceous chondrite clasts set in a finer grained matrix of these same materials. Coarse C-chondrite clasts up to 7 mm are composed mainly of fine-grained phyllosilicates with lesser sulfides and high-mg# anhydrous magnesian silicates. Most of these clasts appear to be texturally consistent with CM2 classification [1] and some contain relict chondrules. The clasts are angular and reaction or alteration textures are not apparent in the surrounding matrix. PRA 04401 contains about 70 modal% C-chondrite clasts while PRA 04402 contains about 7%. Although many howardites are known to contain abundant C-chondrite clasts [2,3,4], PRA 04401 is, to our knowledge, the most chondrite-rich howardite lithology identified to date. Low EPMA totals from CM2-type clasts in other howardites suggest that they frequently contain 10 wt% or more water [2], a figure consistent with their mineralogy. PRA 04401, therefore, demonstrates the potential for hydrous lithologies with greater than 5 wt% water to occur locally within the nominally anhydrous HED parent body. Since the origin of this water is xenogenic, it might therefore be concentrated in portions of the asteroid surface where it would be more readily observable by remote sensing techniques. We plan to further examine C-chondrite clasts in PRA 04401/2 with the intent of establishing firm chemical classification, estimating water content, and evaluating their relationship with the host breccia. To help place them in context of the HED parent, we will also compare these breccias with other howardites to evaluate which lithologies are likely to be more prevalent on the asteroid surface." @default.
- W763905249 created "2016-06-24" @default.
- W763905249 creator A5033176490 @default.
- W763905249 creator A5054886139 @default.
- W763905249 creator A5068134550 @default.
- W763905249 date "2010-07-26" @default.
- W763905249 modified "2023-09-27" @default.
- W763905249 title "A Cabonaceous Chondrite Dominated Lithology from the HED Parent; PRA 04401" @default.
- W763905249 hasPublicationYear "2010" @default.
- W763905249 type Work @default.
- W763905249 sameAs 763905249 @default.
- W763905249 citedByCount "0" @default.
- W763905249 crossrefType "journal-article" @default.
- W763905249 hasAuthorship W763905249A5033176490 @default.
- W763905249 hasAuthorship W763905249A5054886139 @default.
- W763905249 hasAuthorship W763905249A5068134550 @default.
- W763905249 hasConcept C116862484 @default.
- W763905249 hasConcept C121332964 @default.
- W763905249 hasConcept C127313418 @default.
- W763905249 hasConcept C130635790 @default.
- W763905249 hasConcept C138170599 @default.
- W763905249 hasConcept C151730666 @default.
- W763905249 hasConcept C17409809 @default.
- W763905249 hasConcept C199289684 @default.
- W763905249 hasConcept C2778994143 @default.
- W763905249 hasConcept C2778998827 @default.
- W763905249 hasConcept C2779181077 @default.
- W763905249 hasConcept C2779517257 @default.
- W763905249 hasConcept C2779870107 @default.
- W763905249 hasConcept C2780364934 @default.
- W763905249 hasConcept C2780609349 @default.
- W763905249 hasConcept C62074269 @default.
- W763905249 hasConcept C6494504 @default.
- W763905249 hasConcept C87355193 @default.
- W763905249 hasConceptScore W763905249C116862484 @default.
- W763905249 hasConceptScore W763905249C121332964 @default.
- W763905249 hasConceptScore W763905249C127313418 @default.
- W763905249 hasConceptScore W763905249C130635790 @default.
- W763905249 hasConceptScore W763905249C138170599 @default.
- W763905249 hasConceptScore W763905249C151730666 @default.
- W763905249 hasConceptScore W763905249C17409809 @default.
- W763905249 hasConceptScore W763905249C199289684 @default.
- W763905249 hasConceptScore W763905249C2778994143 @default.
- W763905249 hasConceptScore W763905249C2778998827 @default.
- W763905249 hasConceptScore W763905249C2779181077 @default.
- W763905249 hasConceptScore W763905249C2779517257 @default.
- W763905249 hasConceptScore W763905249C2779870107 @default.
- W763905249 hasConceptScore W763905249C2780364934 @default.
- W763905249 hasConceptScore W763905249C2780609349 @default.
- W763905249 hasConceptScore W763905249C62074269 @default.
- W763905249 hasConceptScore W763905249C6494504 @default.
- W763905249 hasConceptScore W763905249C87355193 @default.
- W763905249 hasLocation W7639052491 @default.
- W763905249 hasOpenAccess W763905249 @default.
- W763905249 hasPrimaryLocation W7639052491 @default.
- W763905249 hasRelatedWork W1525417908 @default.
- W763905249 hasRelatedWork W1534679764 @default.
- W763905249 hasRelatedWork W1624635827 @default.
- W763905249 hasRelatedWork W1867306582 @default.
- W763905249 hasRelatedWork W2011078621 @default.
- W763905249 hasRelatedWork W2011417768 @default.
- W763905249 hasRelatedWork W2045750280 @default.
- W763905249 hasRelatedWork W2087170473 @default.
- W763905249 hasRelatedWork W2089369904 @default.
- W763905249 hasRelatedWork W2090468901 @default.
- W763905249 hasRelatedWork W2104186868 @default.
- W763905249 hasRelatedWork W2104784427 @default.
- W763905249 hasRelatedWork W2137989269 @default.
- W763905249 hasRelatedWork W2347137276 @default.
- W763905249 hasRelatedWork W2526271994 @default.
- W763905249 hasRelatedWork W2585055265 @default.
- W763905249 hasRelatedWork W2595841345 @default.
- W763905249 hasRelatedWork W3153245539 @default.
- W763905249 hasRelatedWork W3169015920 @default.
- W763905249 hasRelatedWork W331870735 @default.
- W763905249 isParatext "false" @default.
- W763905249 isRetracted "false" @default.
- W763905249 magId "763905249" @default.
- W763905249 workType "article" @default.