33:
630:
1094:
40:
636:
1106:
263:, which form a semiring of elevated hills in the northern part of the structure. The origin of this structure has been debated for decades, and varied suggestions of its formation include either endogenous tectonic processes or large meteorite impact. However, no conclusive evidence to support either hypothesis has been presented to date.
319:
If confirmed by further investigation of possible shock features, Cerro do Jarau would become the sixth known impact structure in Brazil, as well as the fifth basalt-hosted impact structure on Earth. The crater formed in the same basaltic unit as the nearby
297:) formations. The Botucatu Formation sandstones are intensely silicified and deformed, and were subject to radial and annular faulting. Investigations at Cerro do Jarau identified the occurrence of parautochthonous monomict
417:
255:
Cerro do Jarau is a prominent, approximately 13.5 kilometres (8.4 mi) wide, circular landform rising more than 200 metres (660 ft) above the plains of the
290:
282:
533:
137:
589:
619:
341:
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clasts in polymict breccias. The identification of these features at Cerro do Jarau is suggestive of an impact origin for the structure.
609:
604:
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in sandstones and basalts. In addition, the first mineral deformation studies show the presence of rare planar features in
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in southern Brazil. The name (meaning Jarau hills) comes from the prominent crests of silicified
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418:"Cerro do Jarau, Rio Grande do Sul: A possible new impact structure in southern Brazil"
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Crósta, Alvaro P.; Silva Lourenço, Fernanda; Heinzelmann Priebe, Gustavo (2010),
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Série: Astroblemas no Brasil – crateras de impacto brasileiras Cerro Jarau
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is a 13.5 kilometres (8.4 mi) diameter circular feature in the
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443:"Update on the current knowledge of the Brazilian impact craters"
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452:(1719), 44th Lunar and Planetary Science Conference: 1–2,
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The
Complete Catalog of the Earth's Impact structures
16:
Possible impact crater in Rio Grande do Sul, Brazil
450:44th Annual Lunar and Planetary Science Conference
440:
1118:
372:
370:
368:
366:
328:. The age of impact has been given at 117 Ma (
541:
527:
308:and striated joint surfaces resembling crude
39:
388:
332:), or a broader range from 128.7 to 105 Ma.
363:
342:List of possible impact structures on Earth
534:
520:
441:CrĂłsta, A.P.; Vasconcelos, M.A.R. (2013),
379:
486:
397:
347:List of impact craters in South America
1119:
515:
469:
394:CrĂłsta & Vasconcelos, 2013, p.1
13:
476:, Exoss Citizen Science, p. 1
243:lists the structure as a probable
14:
1163:
304:and polymict breccias resembling
270:volcano-sedimentary rocks of the
1132:Possible impact craters on Earth
1104:
1092:
634:
628:
47:Location of the crater in Brazil
38:
31:
470:Exoss, Citizen Science (2017),
409:
1147:Landforms of Rio Grande do Sul
250:
1:
1065:Lunar and Planetary Institute
897:Cretaceous–Paleogene boundary
357:
266:This structure was formed in
80:>200 m (660 ft)
7:
957:Planar deformation features
497:, p. 1, archived from
495:Russian Academy of Sciences
335:
241:Russian Academy of Sciences
235:, close to the border with
72:~13.5 km (8.4 mi)
10:
1168:
1060:Impact Field Studies Group
1137:Cretaceous impact craters
995:
864:
643:
626:
567:
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543:Impact cratering on Earth
208:
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84:
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60:
55:
26:
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1127:Impact craters of Brazil
1030:William Kenneth Hartmann
696:Clearwater East and West
644:Confirmed≥20 km diameter
947:Ordovician meteor event
487:Mikheeva, Anna (2017),
153:30.198139°S 56.544667°W
56:Impact crater/structure
1050:Eugene Merle Shoemaker
927:Late Heavy Bombardment
158:-30.198139; -56.544667
1071:Traces of Catastrophe
1055:Earth Impact Database
1003:Ralph Belknap Baldwin
221:Cerro do Jarau crater
22:Cerro do Jarau crater
274:and consists of the
458:2013LPI....44.1318C
385:CrĂłsta et al., 2010
352:Praia Grande crater
322:Vista Alegre crater
149: /
967:Shock metamorphism
872:Alvarez hypothesis
423:GSA Special Papers
289:(sandstones), and
203:Campanha Ocidental
1142:Cretaceous Brazil
1080:
1079:
1020:Edward C. T. Chao
229:Rio Grande do Sul
218:
217:
183:Rio Grande do Sul
1159:
1109:
1108:
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1045:Peter H. Schultz
1008:Daniel Barringer
917:Impact structure
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93:Early Cretaceous
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1025:Robert S. Dietz
1013:Barringer Medal
991:
902:Cryptoexplosion
860:
791:Puchezh-Katunki
771:Nördlinger Ries
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590:Asia and Russia
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912:Impact crater
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816:Slate Islands
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610:South America
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554:Impact crater
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501:on 2019-04-03
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1152:Paraná Basin
1069:
1040:Graham Ryder
962:Shatter cone
952:Philippinite
801:Saint Martin
796:Rochechouart
701:Gosses Bluff
656:Amelia Creek
559:Impact event
503:, retrieved
499:the original
489:
478:, retrieved
472:
461:, retrieved
449:
432:, retrieved
427:
421:
410:Bibliography
399:
390:
381:
326:VargeĂŁo Dome
318:
272:Paraná Basin
265:
254:
231:in southern
225:Paraná Basin
220:
219:
209:Municipality
144:56°32′40.8″W
141:30°11′53.3″S
124:Paraná Basin
836:Tookoonooka
821:Steen River
811:Siljan Ring
741:Manicouagan
726:Keurusselkä
403:Exoss, 2017
291:Serra Geral
251:Description
156: /
131:Coordinates
1121:Categories
977:Stishovite
877:Australite
856:Yarrabubba
826:Strangways
786:Presqu'île
761:Montagnais
731:Lappajärvi
681:Charlevoix
666:Beaverhead
661:Araguainha
615:By country
585:Antarctica
505:2017-10-10
480:2017-10-10
463:2017-10-10
434:2017-10-10
358:References
280:Cretaceous
261:sandstones
61:Confidence
942:Moldavite
937:Meteorite
922:Impactite
851:Woodleigh
846:Vredefort
806:Shoemaker
766:Morokweng
751:Mistastin
691:Chicxulub
595:Australia
575:Worldwide
996:Research
841:Tunnunik
736:Logancha
706:Haughton
676:Carswell
620:Possible
336:See also
324:and the
287:Botucatu
276:Jurassic
268:Mesozoic
199:District
193:Sudoeste
189:Province
120:Location
115:Location
69:Diameter
64:Probable
1099:Geology
1085:Portals
987:Tektite
982:Suevite
887:Coesite
882:Breccia
831:Sudbury
781:Popigai
776:Obolon'
756:Mjølnir
721:Karakul
711:Kamensk
671:Boltysh
651:Acraman
454:Bibcode
306:suevite
302:breccia
295:basalts
237:Uruguay
169:Country
107:Drilled
99:Exposed
1111:Brazil
865:Topics
746:Manson
600:Europe
580:Africa
330:Aptian
314:quartz
299:lithic
257:pampas
239:. The
233:Brazil
213:QuaraĂ
173:Brazil
568:Lists
446:(PDF)
283:Guará
179:State
716:Kara
77:Rise
430:: 1
428:465
278:to
102:Yes
86:Age
1123::
493:,
448:,
426:,
420:,
365:^
247:.
227:,
110:No
1087::
535:e
528:t
521:v
456::
293:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
