Contribution au Dosage de l'Argon dans L'Echantillon de Glauconite GL‐O

Cassignol, C.; David, B.; Gillot, P. Y.

doi:10.1111/j.1751-908x.1977.tb00864.x

Cited by 9 publications

(2 citation statements)

References 3 publications

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“…Radiogenic 40 Ar was determined by isotopic dilution using an original procedure described in (Bellon et al, 1981), where a 38 Ar spike is buried as ions in an aluminum foil target. Each target, with a precise 38 Ar volume regularly calibrated with standard samples (Glauconite Gl-O) (Cassignol et al, 1977) was added to the sample at the time of weighing. Consequently, isotope dilution was achieved during fusion of the sample.…”

Section: Isotopic Ages: Experimental Procedures and Age Calculationsmentioning

confidence: 99%

Geochemistry and Isotopic Dating of Cenozoic Volcanic Arc Sequences around the Celebes and Sulu Seas

Bellón¹,

Rangin²

1991

Proceedings of the Ocean Drilling Program

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Geochemical data and whole-rock ^K-^Ar isotopic ages are presented for more than 50 igneous rocks (a majority of lavas and some plutonic bodies) sampled onshore (Philippine Archipelago: Tablas, Panay, Masbate, Mindanao, northern Borneo (Sabah), and north Sulawesi) around the Celebes and Sulu Seas. These data are compared with the ^K-^Ar ages obtained on drilled lavas along the Cagayan Ridge at ODP Sites 769 and 771 and with the major pyroclastic and tephras events recorded in the basins. Onshore ages range from 32 Ma to near 0 Ma for these rocks of generally calc-alkaline affinity with some shoshonitic high-K basalts. On the basis of geological data and kinematic reconstructions, two types of island arcs can be differentiated: those related to the progressive closing of the Celebes and Sulu marginal basins and those belonging to the Philippine Sea Plate. The combined age and chemistry for these two magmatic belts allow us to decipher the Neogene evolution of the complex zone of interaction of the Eurasian, Philippine Sea, and Australian plates.

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Section: Isotopic Ages: Experimental Procedures and Age Calculationsmentioning

confidence: 99%

Geochemistry and Isotopic Dating of Cenozoic Volcanic Arc Sequences around the Celebes and Sulu Seas

Bellón¹,

Rangin²

1991

Proceedings of the Ocean Drilling Program

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show abstract

“…Radiogenic 40 Ar was determined by isotope dilution using an original procedure described in Bellon et al (1981), where the 38 Ar spike is buried as ions in an aluminium foil target. Each target with a precise 38 Ar content of 1.40 × 10~7 cm 3 (s = 1 %) regularly calibrated with the standard sample glauconite GI-0 (Cassignol et al, 1977) was added to the sample at the time of weighing.…”

Section: Methodsmentioning

confidence: 99%

Geochemistry and Isotopic Composition of Volcanic Rocks from the Yamato Basin: Hole 794D, Sea of Japan

Pouclet¹,

Bellón²

1992

Proceedings of the Ocean Drilling Program

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The Yamato Basin basement in the Sea of Japan was drilled below the sediment pile during Legs 127 and 128. Two superposed volcanic complexes are distinguished. The upper complex consists of continental tholeiite sills dated around 20-18 Ma and attributed to the rifting stage of the backarc basin. The lower complex consists of backarc basin basalts probably intruded below the upper complex during the spreading stage. Trace-element compositions and Sr and Nd isotopic signatures may be explained by mixing of at least two end members with a very small addition of crustal and subducted sediment component. Thus, upwelling of mantle diapir occurred during the rifting stage. Contribution of the depleted mantle increased in the spreading stage. The Neogene magmatic history of the Japan Sea is reviewed in the light of the ODP new data.

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Age of the Laschamp paleomagnetic excursion revisited

Gillot

Labeyrie

Làj

et al. 1979

Earth and Planetary Science Letters

124

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Contribution au Dosage de l'Argon dans L'Echantillon de Glauconite GL‐O

Abstract: Une série de mesures a été effeotuée sur le matériel de référence Glauconite GL‐O (grains) afin de définir sa teneur en Argon 40 radiogénique. Les résultats obtenus rendent compte d'une bonne homogénéité, l'éscort‐type relatif étant inférieur à 0.5 % pour 9 mesures.

Cited by 9 publications

References 3 publications

Geochemistry and Isotopic Dating of Cenozoic Volcanic Arc Sequences around the Celebes and Sulu Seas

Geochemistry and Isotopic Dating of Cenozoic Volcanic Arc Sequences around the Celebes and Sulu Seas

Geochemistry and Isotopic Composition of Volcanic Rocks from the Yamato Basin: Hole 794D, Sea of Japan

Age of the Laschamp paleomagnetic excursion revisited

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