 | | Report (volume) | | National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please include...Cretaceous-Tertiary Boundary Sedimentary Rocks in the Beloc Formation, Haiti By G. Brent Dalrymple, Glen A. Izett, Lawrence...(K- T) boundary layer within the marine Beloc Formation, Haiti, as determined by 40Art39 Ar incremental...GOVERNMENT PRINTING OFFICE, WASHINGTON: 1993 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S...Cretaceous-Tertiary boundary sedimentary rocks in the Beloc Formation, Haiti I by G. Brent Dalrymple ... [et al.]. p |  | | Journal (article/letter/editorial) | | d a m [XleP] Mineralogy and petrology of the Haiti Cretaceous/Tertiary section J o h n B. L y o n s...C h a r l e s B. O f f i c e r Earth Sciences Department, Dartmouth College, Hanot,er, NH 03755, USA Received...1992 ABSTRACT The Cretaceous/Tertiary sections in Haiti consist of a sequence of graded beds of turbidity...sedimentology, mineralogy and petrology of the Haiti sections has provided a record of a sequence of...Correspondence to: J.B. Lyons, Earth Sciences Department, D a r t m o u t h College, Hanover, NH 03755 |  | Giuli, Gabriele, Eeckhout, Sigrid Griet, Paris, Eleonora, Koeberl, Christian, Pratesi, Giovanni (2005) Iron oxidation state in impact glass from the K/T boundary at Beloc, Haiti, by high-resolution XANES spectroscopy. Meteoritics & Planetary Science, 40 (11) 1575-1580 doi:10.1111/j.1945-5100.2005.tb00132.x | Journal (article/letter/editorial) | | state in impact glass from the K/T boundary at Beloc, Haiti, by high-resolution XANES spectroscopy Gabriele...CretaceousTertiary (K/T) boundary section at Beloc, Haiti, which formed as the result of impact melting...alteration spherules from the K/T boundary at Beloc, Haiti, and interpreted the material as impact glass...(1992) measured the water content in glasses from Haiti and found low, impact-characteristic abundances...despite all the data favoring an impact origin of the Haiti glasses, a few authors have suggested that the glasses |  | | Journal (article/letter/editorial) | | section at Shell Creek, Alabama Kasana Pitakpaivan, Department of Geology and Geophysics, Received February...size distribution in K-T boundary sections at Beloc (Haiti) and in Arroyo El Mimbral (northeastern Mexico)...Spherules with distinctive morphologies, some with tektite glass remaining, have recently been found at the...the Cretaceous-Tertiary (K-T) boundary at Beloc, Haiti [1,2,3], Arroyo El Mimbral, northeastern Mexico...within the spherules in some sections, such as at Beloc and Mimbral, suggest [MKl 0012-821X/94/$07.00 0 |  | | Journal (article/letter/editorial) | | sediments exposed on the southern peninsula of Haiti D a v i d A . K r i n g a, A l a n R . H i l d e...n t o n a a Lunar and Planetary Laboratory, Department of Planetary Sciences, University of Arizona...residua of tektite-bearing Cretaceous-Tertiary boundary sediments in the Beloc Formation of Haiti contain...and amount of shocked quartz grains deposited in Haiti indicate the crater from which they were excavated...128 (1994) 629-641 ments had been found near Beloc, Haiti, which was initially interpreted as a volcanogenic |  | | Journal (article/letter/editorial) | | Water content of glasses from the K/T boundary, Haiti: An indication of impact origin CHRISTIANKOEBERL...in seven glass samples from the K/T boundary on Haiti was determined by micro-infrared spectrometry. These...determinations, 0.013-0.021 wt% H20, show that the Haiti glasses are water-poor. This is a common characteristic...CRETACEOUS-TERTIARY (K/T) boundary layer at Beloc, Haiti, has a general range in thickness of SO-100...arguments have been cited for an impact origin of the Haiti K/T glasses (e.g., IZETT et al., 1990; SIGURDSSONet |  | | Journal (article/letter/editorial) | | signatures of black tektites from the K-T boundary on Haiti: Implications for the age and type of source material...from CretaceousTertiary (K-T) boundary rock on Haiti are not consistent with their derivation from an...neither structure has as yet proven to be the tektite source. INTRODUCTION (Suess, 1900) ARE NOW COMMONLY...interpreted as tektites from K-T boundary marl at Beloc, Haiti (Izett et al., 1990; Sigurdsson et al., 1991a;...Koeberl, 1986; 1990). As it turns out, all five tektite groups can be distinguished by their chemical and |  | GIULI, Gabriele, EECKHOUT, Sigrid Griet, KOEBERL, Christian, PRATESI, Giovanni, PARIS, Eleonora (2008) Yellow impact glass from the K/T boundary at Beloc (Haiti): XANES determination of the Fe oxidation state and implications for formation conditions. Meteoritics & Planetary Science, 43 (5) 981-986 doi:10.1111/j.1945-5100.2008.tb01093.x | Journal (article/letter/editorial) | | Yellow impact glass from the K/T boundary at Beloc (Haiti): XANES determination of the Fe oxidation state...Cretaceous-Tertiary (K/T) boundary section at Beloc, Haiti, which formed as the result of impact melting...fresh impact glass found at the K/T boundary of Beloc (Haiti) and displaying a variety of chemical compositions...boundary locations) from the K/T boundary at Beloc, Haiti, and interpreted the material as impact glass...compositions (in wt%) of yellow impact glasses from Beloc (Haiti). Sample Oxide Be4a Be4b Be4c Be4e Be4f |  | | Journal (article/letter/editorial) | | CRETACEOUS-TERTIARY BOUNDARY IMPACT EJECTA J. Smit Department of Sedimentary Geology, Vrije Universiteit, 1081HV...influenced, tektite-bearing sequences in shallow marine (<500 m deep) environments and tektite bearing,...4000 km from the crater where centimeter thick, tektite-bearing layers occur, and (d ) a global distal...oxidation state of the impact glass found at Beloc, Haiti, and Mimbral, Mexico (Jehanno et al 1992, Oskarsson...Atlantic Coastal Plain that contain mainly graded tektite deposits, (b) shelf to outer shelf locations around |  | Jéhanno, C., Boclet, D., Froget, L., Lambert, B., Robin, E., Rocchia, R., Turpin, L. (1992) The Cretaceous-Tertiary boundary at Beloc, Haiti: No evidence for an impact in the Caribbean area. Earth and Planetary Science Letters, 109 (1) 229-241 doi:10.1016/0012-821x(92)90086-b | Journal (article/letter/editorial) | | [XLeP] i The Cretaceous-Tertiary boundary at Beloc, Haiti: No evidence for an impact in the Caribbean...January 15, 1992 ABSTRACT The K-T boundary at Beloc in Haiti is characterized by a bed containing more or...a bolide impact in the Caribbean area. However, Beloc glasses are markedly different from tektites and...the globules at the KTB depositional sequence of Beloc represent a local volcanic event slightly preceding...n t of ejecta in most K T B sections. A t Beloc, in Haiti, the existence close to the paleontological |  | Belza, Joke, Goderis, Steven, Smit, Jan, Vanhaecke, Frank, Baert, Kitty, Terryn, Herman, Claeys, Philippe (2015) High spatial resolution geochemistry and textural characteristics of ‘microtektite’ glass spherules in proximal Cretaceous–Paleogene sections: Insights into glass alteration patterns and precursor melt lithologies. Geochimica et Cosmochimica Acta, 152. 1-38 doi:10.1016/j.gca.2014.12.013 | Journal (article/letter/editorial) | | Baert d, Herman Terryn d, Philippe Claeys a a Department of Analytical Environmental and Geo-Chemistry...Brussel, Pleinlaan 2, BE-1050 Brussels, Belgium b Department of Analytical Chemistry, Universiteit Gent, Krijgslaan...Krijgslaan 281-S12, BE-9000 Ghent, Belgium c Department of Sedimentology, Vrije Universiteit Amsterdam...Boelelaan 1085, 1081HV Amsterdam, Netherlands d Department of Electrochemical and Surface Engineering, Vrije...the source crater were studied. At the Beloc locality (Haiti), the glass population is dominated by the |  | | Journal (article/letter/editorial) | | in the interior of the altered spherules at Beloc, Haiti (e.g., Maurasse and Sen 1991; Kettrup et al...(1994) and this study; Haiti yellow glass: Koeberl and Sigurdsson (1992); Haiti black glass: Koeberl and...The various impactites and the black glass from Haiti have, with one exception (i.e., TNdDM of 1.6 Ga)...(1983) and this study; C-1, Y-6 impactites and Haiti tektites: Premo and Izett (1992) and Kettrup et...(1983) and this study; C-1, Y-6 impactites and Haiti glass: Premo and Izett (1992) and Kettrup et al |  | | Journal (article/letter/editorial) | | Chicxulub ejecta horizon at the WT boundary in Beloc, Haiti. The melt lithologies with Si02 ranging from...and its vicinity and from the WT boundary at Beloc, Haiti, were used. The suevites, melt breccias, and...shards from the K/T boundary section at Beloc, Haiti; sample K/T 1 Beloc. Kettrup et al. 1232 The clast-rich...(sample WT 1 Beloc) was separated from porous limestones of the WT boundary at Beloc, Haiti (Maurrasse... 6I80for Chicxulub impact-melt lithologies and Haiti impact glass. The Chicxulub impactites (Y-6 and |  | | Journal (article/letter/editorial) | | Origin and diagenesis of Kff impact spherules-From Haiti to Wyoming and beyond BRUCEF. BOHOR1 AND BILLY P...relict glasses found in Type I Kff spherules from Haiti indicate that they were derived from intermediate...glass cores found in similar KIT spherules from Haiti (e.g., Sigurdsson et al., 1991) confmned the impact...but the origins and include marine sections in Haiti (Hildebrand and Boynton, 1990), compositions of...paper, we describe KfT Type 1 spherules from both Haiti and Wyoming in some detail, along with analyses |  | | Journal (article/letter/editorial) | | spherules in the Chicxulub K-Pg event bed at Beloc, Haiti: Alteration patterns Xenia RITTER1*, Alexander...impact glass spherules from the K-Pg event bed at Beloc, Haiti, using optical and electron microscopy, electron...g., Koeberl and Sigurdsson 1992; Kettrup 418 Beloc spherules et al. 2003; Schulte and Kontny 2005;...precluding any conclusion about the source lithology. Beloc, Haiti, one of about 350 K-Pg described boundary sites...2008). Analyses of whole rock (WR) samples of the Beloc section (Goderis et al. 2013) yielded an Ir anomaly |  | | Report (volume) | | Boundary Impact Events and the 0.77-Ma Australasian Tektite Event: Relevance to Mass Extinction U.S. GEOLOGICAL...National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please include...Boundary Impact Events and the 0.77-Ma Australasian Tektite Event: Relevance to Mass Extinction By E.C.T. CHAO... U.S. GEOLOGICAL SURVEY BULLETIN 2050 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S...boundary impact events and the 0.77-Ma Australasian tektite event : Relevance to mass extinction I by E.C.T |  | | Journal (article/letter/editorial) | | relic glass from the K/T boundary sediments in Haiti DAVID A. KRING and WILLIAM V. BOYNTON Lunar and...have been found in the K/T boundary sediments of Haiti which also contain grains of shocked quartz. The...similar in composition to most previously described tektite glasses, it is slightly enriched in Ca and slightly...sediments of the Beloc Formation (MAURRASSE,1982) on the southern peninsula of Haiti. Although altered..., 1987). The altered impact spherules found in Haiti occur in sizes up to 8 mm, although they also coexist |  | | Journal (article/letter/editorial) | | Geochemistry of impact glasses from the K/T boundary in Haiti: Relation to smectites and a new type of glass ...yellow glasses from the K/T boundary section at Beloc, Haiti, plus three smectite mantles around black glasses...for a connection. We conclude, however, that the Haiti glasses have formed by impact and have later undergone...glasses within some of the altered spherules from Haiti was reported by IZETT et al. ( 1990), SIGURDWN et...altered impact spherules. The glass spherules from Haiti provide valuable clues as to the target material |  | | Journal (article/letter/editorial) | | Los Angeles, CA 90024-1567, USA b Paleontology Department, Belgian Royal Institute of Natural Sciences...extinction. I. Introduction R e c o g n i z e d tektite deposits are rare in the g e o l o g i c record...resemble obsidian glass but can be 1 Now at Department of Geology and Geophysics, University of California...(for a review of tektite characteristics and chemistry, see [1,2]). F o u r tektite strewnfields are...American tektites [1]. T h e recent discovery of tektite glass at the C r e t a c e o u s - T e r t i a |  | | Journal (article/letter/editorial) | | note on the origin of the yellow glasses at the Haiti Cretaceous/Tertiary section Charles B. Officer and...and John B. Lyons Earth Sciences Department, Dartmouth College, Hanouer, N H 03755, USA Received February...1993 ABSTRACT The Cretaceous/Tertiary section in Haiti consists of the alteration products of palagonite...formations. 1. Introduction The setting of the Haiti C r e t a c e o u s / T e r t i a r y ( K / T )...obviously relevant to its origin. Spherules at Haiti do not occur as a single deposit, as might be expected |  | | Report (issue) | | Tektites in Cretaceous-Tertiary boundary rocks on Haiti By G.A. Izett 1 , F.J-M.R. Maurrasse2 , F.E. Lichte3...microscope image of clayaltered dumbbell-shaped tektite about 3.0 mm long.........9 Scanning electron microscope...electron microscope image of clayaltered spherical tektite about 1.3 mm in diameter....... 11 Scanning electron...showing the range of index of refraction of 40 K-T tektite chips....................... 19 Chondrite-normalized...diagram of three K-T tektites and clay spherules from Haiti and two K-T boundary claystone beds from the Raton |  | Koeberl, Christian, Sharpton, Virgil L, Schuraytz, Benjamin C, Shirey, Steven B, Blum, Joel D, Marin, Luis E (1994) Evidence for a meteoritic component in impact melt rock from the chicxulub structure. Geochimica et Cosmochimica Acta, 58 (6) 1679-1684 doi:10.1016/0016-7037(94)90567-3 | Journal (article/letter/editorial) | | University of Vienna, A-1010 Vienna, Austria *Department of Terrestrial Magnetism, Carnegie Institution...3600 Bay Area Blvd., Houston. TX 77058, USA ‘Department of Earth Sciences, Dartmouth College, Hanover...of impact glass from the Haitian K-T boundary at Beloc yielded about 0.1 ppb osmium and an 1870s/‘R80s...impact glasses found at the K-T boundary, mainly in Haiti (e.g., SIGURDSSON et al., 1991; SWISHER et al.,...drillcore and impact glass from the K-T boundary at Beloc. Haiti. The Cl-N10 melt rock (from the depth interval |  | | Journal (article/letter/editorial) | | Universidad de Zaragoza, 50009 Zaragoza, Spain b Department of Geological Sciences, The University of Michigan...impact glass: Si-rich and Ca-rich in Mexico and Haiti, Si-rich in Denmark, and Ca-rich in New Zealand...from other K^T sites such as Mimbral (Mexico), Beloc (Haiti), and Stevns Klint (Denmark), and melted rocks...of other K^T boundary glasses (e.g., Mimbral and Beloc) (Table 1). TEM images showed that shards were partially...the New Zealand samples, compared with those of Beloc and Stevns Klint. The analyses reported for this |  | | Journal (article/letter/editorial) | | initially some doubt as to whether the glasses from Haiti were tektites because the value of the ferric-ferrous...very carefully cleaned the ratio decreases to the tektite values. The point is important because if the Haitian...there was only one measurement of 26Al/loBe in a tektite (plus four determinations of the upper limit; Middleton...compositions are not found among the usually cited tektite compositions. The reason why these compositions...Taylor and Koeberl in their Comment assert that tektite glass can be formed in the course of formation |  | Giuli, G., Cicconi, M. R., Eeckhout, S. G., Koeberl, C., Glass, B. P., Pratesi, G., Cestelli-Guidi, M., Paris, E. (2013) North American microtektites are more oxidized than tektites. American Mineralogist, 98 (11) 1930-1937 doi:10.2138/am.2013.4505 | Journal (article/letter/editorial) | | rue Jules Horowitz, 38043 Grenoble, France 3 Department of Lithospheric Research, University of Vienna...Museum, Burgring 7, A-1010 Vienna, Austria 4 Department of Geological Sciences, University of Delaware...Australasian, Ivory Coast, and North American (NA) tektite strewn field. The North American microtektites...1994). They are associated with three of the four tektite strewn fields so far known: the North American...large fraction of the mass of glass produced by a tektite-generating impact event, such studies are of great |
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