Results 161 to 170 of about 62,716 (304)
A geophysical investigation of the Roter Kamm impact crater, Namibia
Meteoritics &Planetary Science, EarlyView.Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus +6 more
wiley +1 more source
Evidence for a large Paleozoic Impact Crater Strewn Field in the Rocky Mountains. [PDF]
Sci Rep, 2018 Kenkmann T, Sundell KA, Cook D.
europepmc +1 more source
Static recrystallization of shocked calcite in Ries impact breccias
Meteoritics &Planetary Science, EarlyView.Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann +8 more
wiley +1 more source
Comparative studies of lunar, Martian, and Mercurian craters and plains [PDF]
The spatial distribution of lunar smooth plains is not consistent with experimental simulations of melt rock emplacement during cratering in layered materials. Nor is it consistent with the location of melt rocks (suevite) near the Ries basin.
Aggarwal, H. R. +2 more
core +1 more source
Microbial Endolithic Community at Meteor Crater
Meteoritics &Planetary Science, EarlyView.Abstract Postimpact recovery and evolution in response to climate changes produced a modern ecosystem at Meteor Crater dominated by a grassland and woodland of piñon and juniper, which has been used to evaluate floral and megafaunal consequences of impact cratering during the Phanerozoic Eon of complex life.
David A. Kring, Charles S. Cockell
wiley +1 more source
Active methylotrophic methanogenesis by a microbial consortium enriched from a terrestrial meteorite impact crater. [PDF]
mBiovan Dam F +9 more
europepmc +1 more source
Melt production in large-scale impact events: Implications and observations at terrestrial craters [PDF]
The volume of impact melt relative to the volume of the transient cavity increases with the size of the impact event. Here, we use the impact of chondrite into granite at 15, 25, and 50 km s(sup -1) to model impact-melt volumes at terrestrial craters in ...
Cintala, Mark J., Grieve, Richard A. F.
core +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska +6 more
wiley +1 more source
A Paleoarchaean impact crater in the Pilbara Craton, Western Australia. [PDF]
Nat CommunKirkland CL +6 more
europepmc +1 more source
Experimental Impacts into Strength-Layered Targets: Ejecta Kinematics [PDF]
AImpact cratering has dominated the evolution and modification of planetary surfaces through-out the history of the solar system. Impact craters can serve as probes to understanding the details of a planetary subsurface; for example, Oberbeck and Quaide,
Anderson, J. L. B. +6 more
core +1 more source