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Snyder, F.G., Gerdemann, P.E., Hendricks, H.E., Williams, J.H., Wallace, G., and Martin, J.A., 1965, Cryptoexplosive structures in
Missouri: Guidebook, 1965 Annual Meeting of the Geological Society of America: Missouri Geological Survey and Water Resources, Report of Investigations No. 30, 73
358:
Miller, J.F., Evans, K.R., Rovey, C.W., II, Ausich, W.L., Bolyard, S.E., Davis, G.H., Ethington, R.L., Sandberg, C.A., Thompson, T.L., and Waters, J.A., Mixed-age echinoderms, conodonts, and other fossils used to date a meteorite impact, and implications for missing strata in the type
Osagean
468:
Evans, K. R., Rovey, C. W., II, Mickus, K. L., Miller, J. F., Plymate, T., and
Thomson, K. C. 2003. Weaubleau-Osceola structure, Missouri: deformation, event stratification, and shock metamorphism of a mid-Carboniferous impact site.
214:
sediments, and only partially exposed to erosion relatively recently, its structure is well preserved, and its age can be determined with fair accuracy. It is one of a series of known or suspected impact sites along the
324:
away from the center of the impact structure and subsequent silica-saturated waters precipitated silica around the shale clasts. The formation of the round rocks is poorly understood and requires further research.
415:
Evans, Kevin R.; Mickus, Kevin L.; Rovey, Charles W. III; & Davis, George H. (2003). Field Trip I: The
Weaubleau Structure: Evidence of a Mississippian Meteorite Impact in Southwestern Missouri.
303:
rocks are found in the area of the
Weaubleau structure. They are nearly perfectly round, and are referred to locally simply as "geodes", "round rocks", "Missouri rock balls", or "Weaubleau eggs".
247:. The argument for a serial strike would be greatly strengthened if the ages of the other 38th parallel structures could be constrained to the same period as the Weaubleau structure.
549:
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Evans, Kevin R.; Mickus, Kevin L.; Fagerlin, Stanley; Luczaj, John; Mantei, Erwin; Miller, James F.; Moeglin, Thomas; Pavlowsky, Robert T.; & Thomson, Kenneth C. 2004.
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on earth and the fourth largest in the United States. The three larger ones in the US either have been glaciated and buried (
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The 12-mile (19 km) circular
Weaubleau structure is discernible in the drainage patterns of this shaded-relief image.
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Beveridge, T.R., 1949, The
Geology of the Weaubleau quadrangle, Missouri : Iowa City, State University of Iowa
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203:. The structure was originally called the Weaubleau-Osceola structure after Weaubleau Creek and
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Third
International Conference on Large Meteorite Impacts, Nördlingen, Germany, August 5–7, 2003
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This diagram illustrates the large-scale structures interpreted in the shaded-relief image.
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Association of
Missouri Geologists Field Trip Guidebook, No. 26, 50th Annual Meeting
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The structure consists of an area of severe structural deformation and extensive
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are thought to possibly be the result of a serial impact, similar to that of
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that was poorly understood and had been thought to be the result of either
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The Planet Earth Today: Meteorite vs. Meteor, Meteoroid and
Micrometeoroid
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359:(Mississippian) in Missouri, USA. Echinoderm Paleobiology, 2008, 53p.
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event. A 12-mile (19 km) circular structure was discovered by
473:. Extended abstract from conference proceedings available online.
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or nodules. The round rocks may have formed when the impact threw
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160:. It is believed to have been caused by a 1,200-foot (370 m)
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270:). Therefore, the Weaubleau structure is the largest exposed
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Dulin, Shannon; Elmore, R.D. (2008). Evans, Kevin R. (ed.).
419:, pp. 1-30. Missouri Department of Natural Resources.
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The Weaubleau structure is one of the fifty largest known
481:
Oblique Impact at Weaubleau-Osceola Structure, Missouri.
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between 335 and 340 million years ago during the middle
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306:It has been suggested that the round rocks are
207:. It is now known as the Weaubleau structure.
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434:"The Sedimentary Record of Meteorite Impacts"
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299:Long thought to be a glacial remnant, these
438:Geological Society of America Special Paper
340:List of possible impact structures on Earth
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1114:Landforms of St. Clair County, Missouri
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210:Because the site was covered by later
199:Kevin R. Evans through examination of
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1124:Impact craters of the United States
286:One of the "round rocks" found in
176:as a "probable" impact structure.
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243:, an extremely unlikely event on
1129:Possible impact craters on Earth
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492:. Retrieved November 27, 2004.
1:
1081:Lunar and Planetary Institute
913:Cretaceous–Paleogene boundary
262:), or have been subjected to
85:Show map of the United States
1109:Carboniferous impact craters
369:Rajmon, David (2009-07-01).
274:impact structure in the US.
168:(Latest Osagean to Earliest
973:Planar deformation features
268:Beaverhead impact structure
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1076:Impact Field Studies Group
292:
174:Impact Field Studies Group
642:
565:
559:Impact cratering on Earth
63:
54:335 and 340 million years
23:
1046:William Kenneth Hartmann
712:Clearwater East and West
660:Confirmed≥20 km diameter
371:"Impact database 2009.1"
335:38th parallel structures
233:38th parallel structures
963:Ordovician meteor event
172:). It is listed by the
36:Impact crater/structure
1066:Eugene Merle Shoemaker
943:Late Heavy Bombardment
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237:comet Shoemaker-Levy 9
201:digital elevation data
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1134:Landforms of Missouri
1087:Traces of Catastrophe
1071:Earth Impact Database
1019:Ralph Belknap Baldwin
285:
260:Chesapeake Bay crater
124:
488:Space Today Online.
258:), are under water (
212:Pennsylvanian Period
166:Mississippian Period
110:Show map of Missouri
1119:Geology of Missouri
510: /
322:Northview Formation
131:Weaubleau structure
19:Weaubleau structure
983:Shock metamorphism
888:Alvarez hypothesis
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144:near the towns of
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1036:Edward C. T. Chao
514:37.983°N 93.633°W
288:Osceola, Missouri
252:impact structures
219:in the states of
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1061:Peter H. Schultz
1024:Daniel Barringer
933:Impact structure
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483:Abstract online
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463:Further reading
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1056:Graham Ryder
978:Shatter cone
968:Philippinite
817:Saint Martin
812:Rochechouart
717:Gosses Bluff
672:Amelia Creek
575:Impact event
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374:. Retrieved
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305:
301:conglomerate
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272:untectonized
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178:
130:
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852:Tookoonooka
837:Steen River
827:Siljan Ring
757:Manicouagan
742:Keurusselkä
517: /
311:concretions
278:Round rocks
181:brecciation
1103:Categories
993:Stishovite
893:Australite
872:Yarrabubba
842:Strangways
802:Presqu'île
777:Montagnais
747:Lappajärvi
697:Charlevoix
682:Beaverhead
677:Araguainha
631:By country
601:Antarctica
376:2009-08-25
346:References
293:See also:
170:Meramecian
41:Confidence
958:Moldavite
953:Meteorite
938:Impactite
867:Woodleigh
862:Vredefort
822:Shoemaker
782:Morokweng
767:Mistastin
707:Chicxulub
611:Australia
591:Worldwide
197:geologist
185:thrusting
162:meteoroid
135:meteorite
1012:Research
857:Tunnunik
752:Logancha
722:Haughton
692:Carswell
636:Possible
329:See also
231:. These
225:Missouri
221:Illinois
142:Missouri
59:Location
44:Probable
1003:Tektite
998:Suevite
903:Coesite
898:Breccia
847:Sudbury
797:Popigai
792:Obolon'
772:Mjølnir
737:Karakul
727:Kamensk
687:Boltysh
667:Acraman
505:93°38′W
502:37°59′N
320:of the
264:orogeny
241:Jupiter
205:Osceola
187:over a
154:Osceola
150:Iconium
146:Gerster
881:Topics
762:Manson
616:Europe
596:Africa
448:
444:: 63.
318:clasts
229:Kansas
227:, and
156:, and
138:impact
584:Lists
315:shale
308:chert
245:Earth
191:or a
158:Vista
732:Kara
446:ISBN
189:dome
129:The
475:PDF
442:437
421:PDF
239:on
50:Age
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440:.
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404:^
399:p.
223:,
152:,
148:,
551:e
544:t
537:v
454:.
379:.
266:(
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