Major-element trend for shergottite melts and their source materials
スポンサーリンク
概要
- 論文の詳細を見る
The major-element compositions of shergottite melts, plotted against their mg [Mg/(Mg+Fe)] atomic ratios, form a narrow trend, which is designated the shergottite melt trend". Although the mg ratios range from 0.7 to 0.2, the silica contents of the trend are nearly constant from 47 to 53wt%, indicating that the shergottite melts are basaltic, never andesitic nor komatiitic. The trend is enriched in FeO with the range from 15 to 22wt%, and poor in Al_2O_3 with the range from 4 to 14wt%. The melts for nakhlites are poorer in SiO_2 and Al_2O_3 and richer in FeO than the shergottite melt trend. Although the melts for chassignite are similar to the shergottite melt trend, the melts for chassignite and nakhlites are more enriched in K_2O contents than the shergottites melts, indicating that they have a different origin from the latter. The bulk major-element compositions of terrestrial basalts, lunar basalts, and eucrites are compared to the shergottite melt trend. The terrestrial basalts and komatiites are poorer in FeO and richer in Al_2O_3, CaO, and Na_2O than the shergottite melt trend. The lunar low-Ti mare basalts and eucrites have rather similar compositions to the shergottite trend. However, their alkali and P_2O_5 contents are low in comparison to the shergottite trend, reflecting their planetary compositions. A plausible source material for olivine-phyric shergottites was estimated, and it may be a plagioclase peridotite with an mg ratio of 0.81 depleted in alkalis, CaO and Al_2O_3 contents. The partial melting to produce the shergottite trend may have taken place at low pressures, whereas the nakhlites and chassignite may have been produced under moderate (1-30kb) pressure conditions. The chassignite may have fractionated under a low-pressure condition to produce a large amount of cumulus olivine, whereas the nakhlites have not.
著者
-
Ikeda Yukio
Department Of Endocrinology Metabolism And Nephrology Kochi Medical School Kochi University
-
Shimoda Gen
Geological Survey Of Japan
-
Ikeda Yukio
Department Of Materials And Biological Sciences Ibaraki University
-
Ikeda Yukio
Department Of Earth Sciences Faculty Of Science Ibaraki University
-
Ikeda Yukio
Department Of Earth Science Faculty Of Science Ibaraki University
関連論文
- Major-element trend for shergottite melts and their source materials
- High Glucose Induces Transactivation of the α2-HS Glycoprotein Gene Through the ERK1/2 Signaling Pathway
- Muscle Strength is a Marker of Insulin Resistance in Patients with Type 2 Diabetes : A Pilot Study
- Association between Serum Ferritin and Circulating Oxidized Low-density Lipoprotein Levels in Patients with Type 2 Diabetes
- Serum Paraoxonase(PON1) Concentration in Patients Undergoing Hemodialysis
- A Polymorphism in the Promoter Region of the Glucocorticoid Receptor Gene Is Associated with Its Transcriptional Activity
- Clinical Significance of the Insulin Resistance Index as Assessed by Homeostasis Model Assessment
- Serum Paraoxonase and Arylesterase Activities in Hemodialysis Patients
- Urinary prostacyclin metabolites in patients with IgA nephropathy
- Severe Diabetic Scleredema with Extension to the Extremities and Effective Treatment Using Prostaglandin E_1
- Trp64Arg Mutation of β_3-Adrenergic Receptor and Insulin Sensitivity in Subjects with Glucose Intolerance
- Hemangioblastomas with Blood Supply from the Dural Arteries : Two Case Reports
- Petrology of a new basaltic shergottite: Dhofar 378
- Antarctic howardites and their primitive crust
- Chemical compositions of matrices of unequilibrated ordinary chondrites
- Fatal Severe Vasospasm Due to Rewarming Following Hypothermia
- Comparative study on the major element chemical compositions of Antarctic chondrites to those of non-Antarctic falls with reference to terrestrial weathering
- Yamato nakhlites: Petrography and mineralogy
- Petrology and chemistry of the Miles IIE iron. II: Chemical characteristics of the Miles silicate inclusions
- Petrology and chemistry of the Miles IIE iron. I: Description and petrology of twenty new silicate inclusions
- Yamato-791093, a metal-sulfide-enriched H-group chondritic meteorite transitional to primitive IIE irons with silicate inclusions
- New enclaves in the Vaca Muerta mesosiderite: Petrogenesis and comparison with HED meteorites
- Enclaves in the Mt.Padbury and Vaca Muerta mesosiderites: Magmatic and residue (or cumulate) rock types
- Mineralogy of Antarctic aubrites, Yamato-793592 and Allan Hills-78113: Comparison with non-Antarctic aubrites and E-chondrites
- Petrology of silicate inclusions in the Miles IIE iron
- Lithic and mineral clasts in the Dar Al Gani (DAG) 319 polymict ureilite
- Assessment of Oxidative Stress in the Spontaneously Hypertensive Rat Brain Using Electron Spin Resonance (ESR) Imaging and in Vivo L-Band ESR
- Measurement of Oxidative Stress in the Rodent Brain Using Computerized Electron Spin Resonance Tomography
- Diabetes Mellitus Associated with Klinefelter's Syndrome : A Case Report and Review in Japan
- The alteration of chondrules and matrices in new Antarctic carbonaceous chondrites
- Intracranial Malignant Lymphoma developing 20 Years after Total Removal of Testicular Malignant Lymphoma : -Case Report-
- Lack of Association between IL-12B Gene Polymorphism and Autoimmune Thyroid Disease in Japanese Patients
- Cholecystoparesis with Diabetic Autonomic Neuropathy
- Petrology and mineralogy of the Yamato-86720 carbonaceous chondrite
- Oxygen isotopic compositions of petrographically described inclusions from Antarctic unequilibrated ordinary chondrites
- High-Pressure Raman Study of Carbon Tetrafluoride up to 8 GPa
- Petrology of the Yamato-8449 CR chondrite
- Petrology of an unusual monomict ureilite, NWA1241
- Suppression of Tumor Growth in Experimental 9L Gliosarcoma Model by Copper Depletion
- Terrestrial alteration of Fe-Ni metals in Antarctic ordinary chondrites and the relationship to their terrestrial ages
- Petrography and mineral compositions of the Yamato-7308 howardite
- Petrological and geochemical study of the Yamato-74359 and Yamato-74360 achondrites
- Anhydrous alteration of Allende chondrules in the solar nebula III: Alkali-zoned chondrules and heating experiments for anhydrous alteration
- Mineralogy and petrology of an unusual Belgica-7904 carbonaceouschondrite: Genetic relationships among the components
- Anhydrous alteration of Allende chondrules in the solar nebura II: Alkali-Ca exchange reactions and formation of nepheline,sodalite and Ca-rich phases in chondrules
- Anhydrous alteration of Allende chondrules in the solar nebura I: Description and alteration of chondrules with known oxygen-isotopic compositions
- Petrology of the Yamato 980459 shergottite
- Magmatic inclusions in martian meteorites
- Petrology of the Yamato-74442 Chondrite
- Petrology of the Yamato-74191 Chondrite
- Evaluation of the Protective Effects of Cyclosporin A and FK506 on Abnormal Cytosolic and Mitochondrial Ca2+ Dynamics During Ischemia and Exposure to High Glutamate Concentration in Mouse Brain Slice Preparations
- Mixed Pial-Dural Arteriovenous Malformation in the Anterior Cranial Fossa : Two Case Reports
- Petrochemical study of the Yamato-691 enstatite chondrite (E3) V: Comparison of major element chemistries of chondrules and inclusions in Y-691 with those in ordinary and carbonaceous chondrites
- Petrology and mineralogy of the Y-793605 martian meteorite
- Petrology and mineralogy of the Yamato-82162 chondrite (CI)
- Petrochemical study of the Yamato-691 enstatite chondrite (E3) IV: Descriptions and mineral chemistry of opaque-mineral nodules
- Petrochemical study of the Yamato-691 enstatite chondrite (EH3) I: Major element chemical compositions of chondrules and inclusions
- Evaluation of the Protective Effects of Cyclosporin A and FK506 on Abnormal Cytosolic and Mitochondrial Ca^ Dynamics During Ischemia and Exposure to High Glutamate Concentration in Mouse Brain Slice Preparations
- Major element chemical compositions and chemical types of chondrules in unequilibrated E, O, and C chondrites from Antarctica