Thermal history of ALH84001 meteorite by Fe2+-Mg ordering in orthopyroxene. (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Thermal history of ALH84001 meteorite by Fe2+-Mg ordering in orthopyroxene. (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1111/j.1945-5100.2007.tb00531.x (literal)

Alternative label

• Domeneghetti M.C.; Fioretti A.M.; Cámara F.; Molin G.; Tazzoli V. (2007)
  Thermal history of ALH84001 meteorite by Fe2+-Mg ordering in orthopyroxene.
  in Meteoritics & planetary science
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Domeneghetti M.C.; Fioretti A.M.; Cámara F.; Molin G.; Tazzoli V. (literal)

Pagina inizio

• 1706 (literal)

Pagina fine

• 1710 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 42 (literal)

Rivista

• Meteoritics & planetary science (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 10 (literal)

Note

• Google Scholar (literal)
• Scopu (literal)
• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1. Univ Pavia, Dipartimento Sci Terra, I-27100 Pavia, Italy 2. CNR, IGG Unita Padova, I-35137 Padua, Italy 3. CNR, IGG Unita Pavia, I-27100 Pavia, Italy 4. Univ Padua, Dipartimento Min & Petrol, I-35137 Padua, Italy (literal)

Titolo

• Thermal history of ALH84001 meteorite by Fe2+-Mg ordering in orthopyroxene. (literal)

Abstract

• -A single orthopyroxene crystal from the Martian meteorite Allan Hills (ALH) 84001 was studied by X-ray diffraction (XRD) and electron microprobe analysis (EMPA) to retrieve information about its thermal history. Both sets of data were used to measure the Fe2+-Mg order degree between the M1 and M2 sites expressed by the distribution coefficient kD. The 529 ± 30 °C closure temperature (Tc) of the Fe2+-Mg ordering process of ALH 84001 orthopyroxene (Fs28) was calculated using Stimpfl (2005a, 2005b) lnkD versus 1/T equation obtained for intermediate iron sample. At this Tc, the orthopyroxene cooling rate, calculated by Ganguly's (1982) numerical method, was 0.1 °C/day. This study puts new constraints on the last high-temperature thermal episode recorded by orthopyroxene. With reference to the geological history (Treiman 1998), we ascribe this episode to the I3 event, and we interpret the Tc of 529 °C as a lower limit for this impact heating. Our data confirm that experimentally defined physical conditions for the formation of magnetite from decomposition of carbonates took place on the Martian surface during event I3. (literal)

Prodotto di

• Metodologie integrate per la conoscenza di processi e materiali geologici e del loro impatto sull'uomo e l'ambiente (TA.P04.014.002) (Modulo)
• Istituto di geoscienze e georisorse (IGG) (Istituto)

Autore CNR

• FERNANDO CAMARA ARTIGAS (Persona)
• ANNA MARIA FIORETTI (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Thermal history of ALH84001 meteorite by Fe2+-Mg ordering in orthopyroxene." (Insieme di parole chiave)

Incoming links:

Autore CNR di

• ANNA MARIA FIORETTI (Unità di personale interno)
• FERNANDO CAMARA ARTIGAS (Persona)

Prodotto

• Istituto di geoscienze e georisorse (IGG) (Istituto)
• Metodologie integrate per la conoscenza di processi e materiali geologici e del loro impatto sull'uomo e l'ambiente (TA.P04.014.002) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Meteoritics & planetary science (Rivista)

Insieme di parole chiave di

• Keywords of "Thermal history of ALH84001 meteorite by Fe2+-Mg ordering in orthopyroxene." (Insieme di parole chiave)