A test of the hypothesis that impact-induced fractures are preferred sites for later tectonic activity [PDF]
Impact cratering has been an important process in the solar system. The cratering event is generally accompanied by faulting in adjacent terrain. Impact-induced faults are nearly ubiquitous over large areas on the terrestrial planets.
Duxbury, Elizabeth D., Solomon, Sean C.
core +1 more source
Noble gases and nitrogen in material from asteroid Bennu
Meteoritics &Planetary Science, EarlyView.Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty +7 more
wiley +1 more source
Theoretical prediction of crater size for hypervelocity impact by reduced-density particles, 18 May 1966 - 17 August 1967 [PDF]
Theoretical prediction of crater size in Al alloy for hypervelocity impact by reduced density ...
Heyda, J. F., Riney, T. D.
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Meteoritics &Planetary Science, EarlyView.Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews +5 more
wiley +1 more source
Basaltic impact melts in the Apollo collections: How many impacts and which events are recorded? [PDF]
Many of the rocks in the Apollo collections from the lunar highlands are impact melt breccias of basaltic bulk composition. They are known by a variety of names including low-K Fra Mauro basalt, VHA basalt, and basaltic impact melts.
Spudis, Paul D.
core +1 more source
Vertical profiling of shock attenuation at the Rochechouart impact structure, France
Meteoritics &Planetary Science, EarlyView.Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska +4 more
wiley +1 more source
A large impact crater beneath Hiawatha Glacier in northwest Greenland. [PDF]
Sci Adv, 2018 Kjær KH +21 more
europepmc +1 more source
Melt production in large-scale impact events: Calculations of impact-melt volumes and crater scaling [PDF]
Along with an apparent convergence in estimates of impact-melt volumes produced during planetary impact events, intensive efforts at deriving scaling relationships for crater dimensions have also yielded results.
Cintala, Mark J., Grieve, Richard A. F.
core +1 more source
‘reportless places’: Janet Malcolm and Collage
Critical Quarterly, EarlyView.
Natalie Ferris
wiley +1 more source
Search for impact ejecta at the Paleocene–Eocene boundary
Meteoritics &Planetary Science, EarlyView.Abstract Almost 10 years have passed since microtektites and microkrystites were reported for the Paleocene–Eocene (P–E) boundary in drill cores and outcrop in New Jersey and in ODP Hole 1051B in the western North Atlantic. The glassy spherules were interpreted to reflect an impact trigger for the Paleocene–Eocene Thermal Maximum (PETM).
Birger Schmitz +6 more
wiley +1 more source