40Ar-39Ar step-heating of impact glasses from the Nördlinger Ries impact crater-Implications on excess argon in impact melts and tektites

2014 ◽  
Vol 49 (6) ◽  
pp. 1023-1036 ◽  
Author(s):  
Winfried H. Schwarz ◽  
Hans J. Lippolt
Keyword(s):  
Impact Crater ◽  
Excess Argon ◽  
Step Heating ◽  
Impact Melts ◽  
Ries Impact Crater

The Projectile of the Lappajärvi Impact Crater

1980 ◽  
Vol 35 (2) ◽  
pp. 197-203 ◽  
Author(s):  
Elke Göbel ◽  
Uwe Reimold ◽  
Hildegard Baddenhausen ◽  
Herbert Palme
Keyword(s):  
Impact Crater ◽  
Carbonaceous Chondrite ◽  
Volatile Elements ◽  
Rich Phase ◽  
Impact Melt ◽  
Siderophile Elements ◽  
High Concentrations ◽  
Impact Melts

Abstract Two impact melt samples from the Lappajärvi crater (Scandinavia) are highly enriched in siderophile elements, such as Ir, Re, and Os. This indicates the presence of a meteoritic component. The simultaneous enrichments of Ni, Co, Cr, and Se suggest a chondritic projectile. Because of the relatively large indigenous contributions to Ni, Co, and Cr, it is not possible to distinguish between a normal and a carbonaceous chondrite. The high concentrations of relatively volatile elements could point towards a volatile-rich projectile.The two melt samples have high Re/Ir ratios compared to chondritic ratios. Enrichment of Re relative to Ir is very unusual in terrestrial impact melts. Loss of Re, because of volatilisation under oxidizing conditions or by weathering is frequently observed.The high Re/Ir ratios and the high abundances of relatively volatile elements either indicate the presence of a volatile rich phase or they characterize a type of meteorite, which has not been sampled. Some lunar highland rocks have a pattern of meteoritic elements rather similar to that observed for the Lappajärvi meteorite.The Lappajärvi crater is, after Rocheehouart, the second European crater where a significant amount of meteoritic component has been found.A melt sample from the Lake St. Martin crater (Manitoba), did not show any enrichment in meteoritic elements.

Ries impact crater sedimentary conglomerates: Sedimentary particle 'impact pre-processing', transport distances and provenance, and implications for Gale crater conglomerates, Mars

Icarus ◽  
2019 ◽  
Vol 321 ◽  
pp. 531-549 ◽  
Author(s):  
Gernot Arp ◽  
Sebastian Schultz ◽  
Volker Karius ◽  
James W. Head
Keyword(s):  
Impact Crater ◽  
Particle Impact ◽  
Gale Crater ◽  
Ries Impact Crater

Ca-rich majorite derived from high-temperature melt and thermally stressed hornblende in shock veins of crustal rocks from the Ries impact crater (Germany)

2010 ◽  
Vol 161 (2) ◽  
pp. 275-291 ◽  
Author(s):  
Volker Stähle ◽  
Rainer Altherr ◽  
Lutz Nasdala ◽  
Thomas Ludwig
Keyword(s):  
High Temperature ◽  
Impact Crater ◽  
Crustal Rocks ◽  
Ries Impact Crater ◽  
Thermally Stressed

Diamond and silicon carbide in impact melt rock from the Ries impact crater

Nature ◽  
1995 ◽  
Vol 378 (6552) ◽  
pp. 41-44 ◽  
Author(s):  
R. M. Hough ◽  
I. Gilmour ◽  
C. T. Pillinger ◽  
J. W. Arden ◽  
K. W. R. Gilkess ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Impact Crater ◽  
Impact Melt ◽  
Ries Impact Crater

Planar Deformation Features in Quartz from the Ries Impact Crater: Advanced by Micro-Raman Spectroscopy

2011 ◽  
Vol 44 (7-8) ◽  
pp. 469-473 ◽  
Author(s):  
Arnold Gucsik ◽  
Tasuku Okumura ◽  
Masahiro Kayama ◽  
Hirotsugu Nishido ◽  
Kiyotaka Ninagawa
Keyword(s):  
Raman Spectroscopy ◽  
Impact Crater ◽  
Planar Deformation ◽  
Micro Raman Spectroscopy ◽  
Deformation Features ◽  
Planar Deformation Features ◽  
Ries Impact Crater

Stable isotope composition of impact glasses from the Nördlinger Ries impact crater, Germany

2001 ◽  
Vol 65 (8) ◽  
pp. 1325-1336 ◽  
Author(s):  
Torsten W Vennemann ◽  
Andreas Morlok ◽  
Wolf von Engelhardt ◽  
Kurt Kyser
Keyword(s):  
Stable Isotope ◽  
Impact Crater ◽  
Isotope Composition ◽  
Stable Isotope Composition ◽  
Ries Impact Crater

Chemical and ecological evolution of the Miocene Ries impact crater lake, Germany: A reinterpretation based on the Enkingen (SUBO 18) drill core

2013 ◽  
Vol 125 (7-8) ◽  
pp. 1125-1145 ◽  
Author(s):  
G. Arp ◽  
M. Blumenberg ◽  
B. T. Hansen ◽  
D. Jung ◽  
C. Kolepka ◽  
...  
Keyword(s):  
Impact Crater ◽  
Crater Lake ◽  
Drill Core ◽  
Ecological Evolution ◽  
Ries Impact Crater

A chlorine disinfectant for excess argon released from K-felsspar during step heating

1994 ◽  
Vol 123 (1-3) ◽  
pp. 95-104 ◽  
Author(s):  
T. Mark Harrison ◽  
Matthew T. Heizler ◽  
Oscar M. Lovera ◽  
Chen Wenji ◽  
Marty Grove
Keyword(s):  
Excess Argon ◽  
Step Heating
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