Shocked quartz from the late Eocene: Impact evidence from Massignano, Italy

Geology

Volumn 24, Issue 6, 1996, Pages 483-486

  Clymer, Aron K ^a   Bice, David M ^b   Montanari, Alessandro ^c,d  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b CARLETON COLLEGE   (United States)

^c Osservatorio Geologico di Coldigioco   (Italy)

^d PSL RESEARCH UNIVERSITY   (France)

Author keywords

[No Author keywords available]

Indexed keywords

GEOLOGY;

CRITICAL TIME; ENVIRONMENTAL CRISIS; IMPACT EVENTS; IMPACT EVIDENCES; LATE EOCENE; MAXIMUM CONCENTRATIONS; SHOCKED QUARTZ; UPPER EOCENE;

QUARTZ;

EOCENE; MARL; OUTCROP; QUARTZ; IMPACT; IRIDIUM ANOMALY; SHOCK METAMORPHISM;

ANCONA; ASCOLI PICENO; ITALY; MARCHE; MASSIGNANO;

EID: 0029730820     PISSN: 00917613     EISSN: None     Source Type: Journal    
DOI: 10.1130/0091-7613(1996)024<0483:SQFTLE>2.3.CO;2     Document Type: Article

References (33)

1. Alexopoulos, J. S., Grieve, R. A. F., and Robertson, P. B., 1988, Microscopic deformation features in quartz: Discriminative characteristics of shock-generated varieties: Geology, v. 16, p. 796-799.
2. Alvarez, L. W., Alvarez, W., Asaro, F., and Michel, H. V., 1980, Extraterrestrial cause for the Cretaceous-Tertiary extinction: Science, v. 208, p. 1095-1108.
3. Alvarez, W., Asaro, F., Michel, H. V., and Alvarez, L. W., 1982, Iridium anomaly approximately synchronous with terminal Eocene extinctions: Science, v. 216, p. 886-888.
4. Alvarez. W., Claeys, P., and Kieffer, S., 1995, Emplacement of Cretaceous-Tertiary boundary shocked quartz from Chicxulub crater: Science, v. 269, p. 930-935.
5. Asaro, F., Alvarez, L. W., Alvarez, W., and Michel, H. V., 1982, Geochemical anomalies near the Eocene/Oligocene and Permian/Triassic boundaries: Geological Society of America Special Paper 190, p. 517-528.
6. Berggren, W. A., and Prothero, D. R., eds., 1992, Eocene-Oligocene climate and biotic evolution: Princeton, New Jersey. Princeton University Press, 568 p.
7. Berggren, W. A., Kent, D. V., Obradovich, J. D., and Swisher, C. C., 1992, Toward a revised Paleogene geochronology, in Berggren, W. A., and Prothero, D. R., eds., Eocene-Oligocene climate and biotic evolution: Princeton, New Jersey, Princeton University Press, p. 29-45.
8. Bice, D. M., Newton, C. R., McCauley, S., Reiners, P. W., and McRoberts, C. A., 1992. Shocked quartz at the Triassic-Jurassic boundary in Italy: Science, v. 255, p. 443-446.
9. Bohor, B. F., Betterton. W. J., and Foord, E. E., 1988, Coesite, glass, and shocked quartz at DSDP Site 612: Evidence for a nearby impact in the late Eocene: Houston, Texas, Proceedings from the Lunar and Planetary Science Conference 19, p. 114-115.
10. 39Ar method: Houston, Texas, Proceedings from the Lunar and Planetary Science Conference 24, p. 161.
11. Brinkhuis, H., and Coccioni, R., 1995, Is there a relation between dinocysts changes and iridium after all? Preliminary results from the Massignano section, in Montanari, A., and Coccioni, R., eds., The effects of impacts on the atmosphere and biosphere with regard to short- and long-term changes: Abstracts and Field Trips: Ancona, Italy, p. 214 (contact A. Montanari for copies).
12. D'Hondt, S. L., Keller, G., and Stallard, R. F., 1987, Major element compositional variation within and between different late Eocene microtektite strewnfields: Meteoritics, v. 22, p. 61-79.
13. Ganapathy, R., 1982, Evidence for a major meteorite impact on Earth 34 million years ago: Implication on the origin of North American tektites and Eocene extinctions: Geological Society of America Special Paper 190, p. 513-516.
14. Glass. B. P., 1987, Coesite associated with North American tektite debris in DSDP Site 612 on the continental slope off New Jersey: Houston, Texas, Proceedings from the Lunar and Planetary Science Conference 18, p. 328-329.
15. Glass, B. P., and Burns, C. A., 1987, Late Eocene crystal-bearing spherules: Two layers or one?: Meteoritics, v. 22, p. 265-279.
16. Glass, B. P., and Wu, J., 1993, Coesite and shocked quartz discovered in the Australasian and North American microtektite layers: Geology, v. 21, p. 435-438.
17. Glass, B. P., Burns, C. A., Crosbie, J. R., and DuBois, D. L., 1985, Late Eocene North American microtektites and clinopyroxene-bearing spherules: Journal of Geophysical Research, v. 90, p. D175-D196.
18. 39Ar laser-probe dating of North American tektite fragments from Barbados and the age of the Eocene-Oligocene boundary: Chemical Geology (Isotope Geoscience Section), v. 59, p. 181-186.
19. Izett, G. A., 1990, The Cretaceous/Tertiary boundary interval, Raton basin, Colorado and New Mexico, and its content of shock-metamorphosed minerals: evidence relevant to the K/T boundary impact-extinction theory: Geological Society of America Special Paper 249, 100 p.
20. Keller, G., 1986, Stepwise mass extinctions and impact events; late Eocene to early Oligocene: Marine Micropaleontology, v. 10, p. 267-293.
21. Keller, G., D'Hondt, S. L., Orth, C. J., Gilmore, J. S., Oliver, P. Q., Shoemaker, E. M., and Molina, E., 1987, Late Eocene impact microspherules: Stratigraphy, age, and geochemistry: Meteoritics, v. 22, p. 25-60.
22. Koeberl, C., Poag, C. W., Reimold, W. U., and Brandt, D., 1996. Impact origin of the Chesapeake Bay structure and the source of the North American tektites: Science, v. 271, p. 1263-1266.
23. Langenhorst, F., 1996, Shocked quartz in late Eocene impact ejecta from Massignano (Ancona, Italy): Clues to shock conditions and source crater: Geology, v. 24, p. 487-490 (this issue).
24. Mackensen, A., and Ehrmann, W. U., 1992, Middle Eocene through early Oligocene climate history and paleoceanography in the Southern Ocean: Stable oxygen and carbon isotopes from ODP Sites on Maud Rise and Kerguelen Plateau: Marine Geology, v. 108, p. 1-27.
25. Montanari, A., and eight others, 1988, Radioisotopic dating of the Eocene-Oligocene boundary in the pelagic sequence of the northern Apennines, in Premoli Silva, I., Coccioni, R., and Montanari, A., eds., The Eocene-Oligocene boundary in the Marche-Umbria basin (Italy) (IUGS memoir): Ancona, Italy, Fratelli Annibaldi Publishers, p. 195-208.
26. Montanari, A., Asaro, F., and Kennett, J. P., 1993, Iridium anomalies of late Eocene age at Massignano (Italy), and ODP Site 689B (Maud Rise, Antarctic): Palaios, v. 8, p. 420-437.
27. Obradovich, J. D., Snee, L. W., and Izett, G. A., 1989, Is there more than one glassy impact layer in the late Eocene?: Geological Society of America Abstracts with Programs, v. 21, p. 134.
28. Premoli Silva, I., Coccioni, R., and Montanari, A., eds., 1988, The Eocene-Oligocene boundary in the Marche-Umbria basin (Italy) (IUGS memoir): Ancona, Italy, Fratelli Annibaldi Publishers, 268 p.
29. Sanfilippo, A., Riedel, W. R., Glass, B. P., and Kyte, F. T., 1985, Late Eocene microtektites and radiolarian extinctions on Barbados: Nature, v. 314, p. 613-615.
30. Stehlin, H. G., 1909, Remarques sur les saunules de Mammiferes des couches eocenes et oligocenes du Bassin de Paris: Société Géologique de France, Bulletin, v. 4, p. 488-520.
31. Stöffler, D., and Langenhorst, F., 1994, Shock metamorphism of quartz in nature and experiment: I. Basic observation and theory: Meteoritics, v. 29, p. 155-181.
32. Thein, J. E., 1987, A tektite layer in upper Eocene sediments of the New Jersey continental slope, Site 612, Leg 95, in Initial reports of the Deep Sea Drilling Project, Volume 95: Washington, D.C., Government Printing Office, p. 565-579.
33. Thomas, E., 1992, Middle Eocene-late Oligocene bathyal benthic foraminifera (Weddell Sea): Faunal changes and implications for ocean circulation, in Berggren, W. A., and Prothero, D. R., eds., Eocene-Oligocene climate and biotic evolution: Princeton, New Jersey, Princeton University Press, p. 245-271.