Unaltered cosmic spherules in a 1,4-Gyr-old sandstone from Finland

Nature

Volumn 395, Issue 6698, 1998, Pages 146-148

  Deutsch, Alexander ^a   Greshake, Ansgar ^a,c   Pesonen, Lauri J ^b   Pihlaja, Pekka ^b  

^a UNIVERSITY OF MÜNSTER   (Germany)

^b GEOLOGICAL SURVEY OF FINLAND   (Finland)

^c HUMBOLDT UNIVERSITY   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

COSMOCHEMISTRY; MICROMETEORITE; SANDSTONE;

ARTICLE; ASTRONOMY; CHEMICAL COMPOSITION; FINLAND; GEOLOGY; GREENLAND; PARTICLE SIZE; PRIORITY JOURNAL; SEDIMENT;

EARTH (PLANET); EVOLUTION, PLANETARY; FINLAND; FOSSILS; IRON COMPOUNDS; METEOROIDS; OXYGEN COMPOUNDS;

FINLAND;

ASTEROIDEA; SPHERULES;

EID: 0032504957     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/25943     Document Type: Article

References (30)

1. Blanchard, M. B., Brownlee, D. E., Bunch, T. E., Hodge, P. W. & Kyte, F. T. Meteoroid ablation spheres from deep-sea sediments. Earth Planet. Sci. Lett. 46, 178-190 (1980).
2. Taylor, S. & Brownlee, D. E. Cosmic spherules in the geologic record. Meteoritics 26, 203-211 (1991).
3. Brownleee, D. E., Bates, B. & Schramm, L. The elemental composition of stony cosmic spherules. Mateoritics Planet. Sci. 32, 157-175 (1997).
4. Brownlee, D. E. in The Sea Vol. 7 (ed. Emilinani, C.) 733-762 (Wiley, New York, 1981).
5. Brownlee, D. E. Cosmic dust: collection and research. Annu. Rev. Earth Planet. Sci. 13, 147-173 (1985).
6. Maurette, M., Jéhanno, C., Robin, E. & Hammer, C. Characteristics and mass distribution of extraterrestrial dust from the greenland ice cap. Nature 328, 699-702 (1987).
7. Robin, E., Christophe Michel-Levy, N., Bourot-Denise, M. & Jéhanno, C. Crystalline micrometeorites from Greenland blue lakes: their chemical composition, mineralogy and possible origin. Earth Planet. Sci. Lett. 97, 162-176 (1990).
8. Maurette, M. et al. A collection of diverse micrometeorites recovered from 100 tonnes of Antarctic blue ice. Nature 351, 44-46 (1991).
9. Taylor, S., Lever, J. H. & Harvey, R. P. Accretion rate of cosmic spherules measured at the South Pole. Nature 392, 899-902 (1998).
10. Robin, E., Bonté, Ph., Froget, L., Jéhanno, C. & Rocchia, R. Formation of spinels in cosmic objects during atmospheric entry: A clue to the Cretacious-Tertiary boundary event. Earth Planet. Sci. Lett. 108, 181-190 (1992).
11. Gayraud, J., Robin, E., Rocchia, R. & Froget, L. Formation conditions of oxidized Ni-rich spinel and their relevance to the K/T boundary event. Geol. Soc. Am. Spec. Pap. 307, 425-443 (1996).
12. Brownlee, D. E., Bates, B. A. & Wheelock, M. M. Extraterrestrial platinum group nuggets in deep-sea sediments. Nature 309, 693-695 (1984).
13. Suominen, V. The chronostratigraphy of southwestern Finland, with special reference to Postjotnian and Subjotnian diabases. Geol. Surv. Fin. Bull. 304 (1991).
14. Amatov, A., Laitakari, I. & Prooshin, Ye. in Explanation to the Map of Precambrian Basement of the Gulf of Finland and Surrounding Area 1:1 mil (ed. Koistinen, T.) Geol. Surv. Finl. Spec. Pap. 21, 99-113 (1996).
15. Neuvonen, K. J. Remanent magnetization of the Jotnian sandstone in Satakunta, SW-Finland. Bull. Geol. Soc. Fin. 45, 23-27 (1973).
16. Marttila, E. Satakunnan hiekkakiven sedimentaatio-olosuhteista. (On the sedimentary environment of the Satakunta sandstone.) Thesis, Univ. Turku (1969).
17. Kohonen, J., Pihlaja, P., Kujala, H. & Marmo, J. Sedimentation of the Jotnian Satakunta sandstone, western Finland. Geol. Surv. Fin. Bull. 369 (1993).
18. Des Marais, D. J., Strauss, H., Summons, R. E. & Hayes, J. M. Carbon isotope evidence for the stepwise oxidation of the Proterozoic environment. Nature 359, 605-609 (1992).
19. Kasting, J. F. Earth's early atmosphere. Science 259, 920-926 (1993).
20. Ohmoto, H. When did the Earth's atmosphere become oxic? Geochem. News 93, 12-27 (1997).
21. Jéhanno, C., Boclet, D., Bonté, Ph., Castellarin, A. & Rocchia, R. Identification of two populations of extraterrestrial particles in a Jurassic hardground of the Southern Alps. Proc. Lunar Planet. Sci. Conf. 18, 623-630 (1988).
22. Marttila, E. Mikrometeorlitteja Satakunnan kiekkakivessä. (Micrometeorites in the Satakunta sandstone.) Geologi 20, 135-136 (1968).
23. Steele, I. M. Olivine in Antarctic micrometeorites: Comparison with other extraterrestrial olivine. Geochim. Cosmochim. Acta 56, 2923-2929 (1992).
24. Beckerling, W. & Bischoff, A. Occurrence and composition of relict minerals in micrometeorites from Greenland and Antarctica - Implication for their origjns. Planet. Space Sci. 43, 435-449 (1995).
25. Brownlee, D. E., Bates, B. & Beauchamp, R. H. in Chondrules and their Origin (ed. King, E. A.) 122-133 (Lunar and Planetary Inst., Houston, 1983).
26. Love, S. G. & Brownlee, D. E. Heating and thermal transformation of micrometeoroids entering the Earth's atmosphere. Icarus 89, 26-43.
27. Thorslund, P. & Wickman, F. E. Middle Ordovician chondrite in fossiliferous limestone from Brunflo, central Sweden. Nature 289, 285-286 (1981).
28. Goodwin, A. M. Precambrian Geology; the Dynamic Evolution of the Continental Crust (Academic, San Diego, 1991).
29. Bence, A. E. & Albee, A. L. Empirical correction factors for the electron microanalysis of silicates and oxides. J. Geol. 76, 382-403 (1968).
30. Kerridge, J. F. & Matthews, M. S. (eds) Meteorites and the Early Solar System Appendix 3 (Univ. Arizona Press, Tucson, 1988).