Dalsze badanie struktur w okolicach Wyszkowa – wyniki prac terenowych

• Authors: Tomasz Walesiak

Title variants

EN

Further investigation of structures near Wyszkow – field research results

• Languages of publication: PL

Abstracts

EN

There are specified criteria used to verify if some geological structure was developed during hypervelocity impact. Some of them are related to the passage of a shock wave through rocks, so are considered as definitive. Porządzie, Jaszczulty & Ochudno are structures discovered in 2014 (based on LiDAR data). They have many features suggesting possible impact origin. In shape of Porządzie there can be even recognized possible traces of shock waves, similar to those present during hypersonic flow (similar to observed e.g. in an airburst shape of extraordinary bright meteors). Unfortunately, this kind of observations (morphometry) on Earth is still considered as not enough to confirm the crater. The aim of recent study was to search for additional traces, which may help to prove that mentioned structures were created during common oblique impact event. Initially there were chosen 3 locations for outcrops, but finally samples were collected from 6 smaller pits. In Porzadzie structure there were discovered cemented rocks with various shape and size (concretions or lithic, parautochtonous breccias) and 2 rocks with possibly shocked quartz, having basal sets of thin and straight lamellae. On once surface there were recognized hierarchal branched (including spoon-like) structures resembling shatter cones. In uprange, at depth of about 50–70 cm, soil was rich in small charcoal pieces (like in other relatively small craters: e.g. Campo del Cielo, Whitecourt, Kaali, Ilumetsa, Morasko). All these observations, taken together with previous results, are about to confirm impact origin of Porzadzie crater.

Keywords

EN

crater; impact; oblique; planar deformation features; shatter cones; shocked quartz

Discipline

• GEOLOGY: GEOLOGY

• Publisher: Polskie Towarzystwo Meteorytowe
• Journal: Acta Societatis Metheoriticae Polonorum
• Year: 2019
• Volume: 10
• Pages: 168-192

Contributors

author

Tomasz Walesiak

• Warszawa

References

• Cassidy W.A., Renard M.L., 1996, Discovering research value in the Campo del Cielo, Argentina, meteorite craters, Meteoritics & Planetary Science 31, s. 433–448.
• Fazio A., Pollok K, Langenhorst F., 2018, Mechanical brazil twins and {1011} PDFs in quartz: indicators of low-pressure shock metamorphism, 81st Annual Meeting of The Meteoritical Society 2018, LPI, Contribution No. 2067, id 6116.
• French B.M., 1998, Traces of catastrophe. a handbook of shock-metamorphic effects in terrestrial meteorite impact structuress, LPI, Contribution No. 954, Houston, Texas.
• Herd C.D.K., Froese D.G., Walton E.L., Kofman R.S., Herd E.P.K., Duke M.J.M., 2008, Anatomy of a young impact event in central Alberta, Canada: Prospects for the missing Holocene impact record, Geology 36, s. 955–958.
• Ivanov B.A., Basilevsky A.T., Sazonoya L.V., 1982, Formation of the central uplift in meteoritic craters, Meteoritika vol. 40, s. 67–81.
• Koeberl C., 2002, Mineralogical and geochemical aspects of impact craters, Mineralogical Magazine, October 2002, vol. 66(5), s. 745–768.
• Kofman R.S., Herd C.D.K., Froese D.G., 2010, The Whitecourt meteorite impact crater, Alberta, Canada. Meteoritics & Planetary Science 45, issue 9, s. 1429–1445.
• Krinow E., 1955, Meteoryty Olbrzymy, Wydawnictwa Geologiczne, Warszawa 1955.
• Łosiak A., Wild E.M., Geppert W.D., Huber M.S., Jőeleht A., Kriiska A., Kulkov A., Paavel K., Pirkovic I., Plado J., Steier P., Välja R., Wilk J., Wisniowski T. and Zanetti M., 2016, Dating a small impact crater: An age of Kaali crater (Estonia) based on charcoal emplaced within proximal ejecta, Meteoritics and Planetary Science, vol. 51, issue 4, s. 681–695.
• Łosiak A., Jőeleht A., Plado J., Szyszka M., Wild E.M., Bronikowska M., Belcher C., Kirsimäe K., Steier P., 2017, Dating Ilumetsa craters (Estonia) based on charcoal emplaced within their proximal ejecta blankets, LPSC 48#1879.
• Melosh H.J., Ivanov B.A., 1999, Impact Crater Colapse, Annual Review of Earth and Planetary Sciences, vol. 27, s. 385–415.
• Muszyński A., 2016, Nowe badania geologiczne w rejonie upadku meteorytu Morasko, IX Konferencja Meteorytowa, Łódź.
• Ormö J., Lindström M., Lepinette A., Martinez-Frias J., Diaz-Martinez E., 2006, Cratering and modification of wet-target craters: Projectile impact experiments and field observations of the Lockne marine-target crater (Sweden), Meteoritics & Planetary Science 41, issue 10, s. 1605–1612.
• Ormö J., Rossi A. P., Housen K. R., 2013, A new method to determine the direction of impact: Asymmetry of concentric impact craters as observed in the field (Lockne), on Mars, in experiments, and simulations, Meteoritics & Planetary Science 48, issue 3, s. 403–419.
• Osinski G.R., Ferričre L., 2016, Shatter cones: (Mis)understood?, Science Advances 2, e1600616.
• Sagy A., Fineberg J., Reches Z., 2004, Shatter cones: Branched, rapid fractures formed by shock impact. Journal of Geophysical Research 109, B10209 (2004).
• Sinha K., Candle G.V., 2007, Grid Sensitivity of Detached eddy simulation of a Mach 16 Re-entry Configuration, 45th AIAA Aerospace Sciences Meeting and Exhibit, Nevada, Reno.
• Schultz P.H., Eberhardy C.A., Ernst C.M., A’Hearn M.F., Sunshine J.M., Lisse C.M., i in., 2007, The Deep Impact oblique impact cratering experiment, Icarus 190, s. 295–333.
• Schultz P.H., Anderson J.B.L., Hermalyn B.,2009, Origin and significance of uprange ray patterns, LPSC 40#2496.
• Stankowski W., 2009, Meteoryt Morasko. Osobliwość obszaru Poznania, Wydawnictwo Naukowe UAM, Poznań 2009.
• Walesiak T.M., 2016, Analiza cech impaktu ukośnego na przykładzie struktur Porządzie, Jaszczułty i Ochudno, ASMP, 7, s. 151–176.
• Walesiak T.M., 2017, Meteor airburst shape as another indicator for small oblique impacts, LPSC 48#1713.
• Earth Impact Database, PASSC, Criteria for the identification of an impact structure: http://www.passc.net/EarthImpactDatabase/New%20website_05-2018/Criteria.html
• Hypersonics CFD Group, Department of Aerospace Engineering, Detached eddy simulation of a Mach 16 Re-entry Configuration: http://www.hypersonic-cfd.com/research/projects/detached-eddy-simulation.html
• Planetary Science Institute, The Explorer’s Guide to Impact Craters – Shocked Gneiss: https://www.psi.edu/epo/explorecraters/shockedgneiss.htm

• Document Type: article