Results 41 to 50 of about 68,393 (238)

Impact Flux on the Moon

Space: Science & Technology
The crust of the Moon records the complete history of collisions by different-sized projectiles from various sources since its early solidification. Planetary bodies in the inner Solar System experienced similar sources of impactors, and the Moon is an ...
Zhiyong Xiao, Kaichang Di, Minggang Xie, Zongyu Yue, Yangting Lin, Yiren Chang, Yichen Wang, Fanglu Luo, Rui Xu, Hanxing Ouyang   +9 more
doaj   +1 more source

Organic geochemistry of the crater-fill sediments from Boltysh impact crater, Ukraine [PDF]

, 2009
The Boltysh impact crater, is a complex structure formed on the basement rocks of the Ukrainian shield which has been dated at 65.17±0.64 Ma [1]. The Boltysh crater has been know for several decades and was originally drilled in the 1960s-1980s in a ...
Gilmour, I., Gurov, E. P., Jolley, D. W., Kelley, S. P., Watson, J. S.   +4 more
core  

Formation of Craters in Sand

International Scholastic Journal of Science, 2007
The diameter of craters formed by spheres of varying mass dropped into sand at low speed was studied. The relationship between the diameter of the crater formed and the kinetic energy of the projectile at impact was found to be of the same general form ...
Vanissra Boonyaleepun, Se-Won Jang
doaj  

3D anatomy of the Cretaceous–Paleogene age Nadir Crater

Communications Earth & Environment
The Nadir Crater offshore West Africa is a recently proposed near K-Pg impact structure identified on 2D seismic. Here we present 3D seismic data that image this crater in exceptional detail, unique for any such structure, which demonstrates beyond ...
Uisdean Nicholson, William Powell, Sean Gulick, Thomas Kenkmann, Veronica J. Bray, Debora Duarte, Gareth S. Collins   +6 more
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Vichada meteorite impact effects from simulation of regional environmental consequences of a meteoroid impact on Earth

Earth Sciences Research Journal, 2018
This study estimates the regional environmental consequences of the impactor extraterrestrial body that could produce the probable Vichada impact crater structure on the Vichada Plain, in Colombia, South America.
Orlando Hernandez Pardo
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Recent progress of geophysical exploration in Earth's impact craters

地球与行星物理论评
Geophysical exploration plays an important role in detecting and studying impact structures. This article reviews the common geophysical features of Earth's impact craters, including their gravity, magnetic, electrical, and seismic characteristics.
Yangfan Deng, Heng Luo, Zhou Zhang, Sheng Zhu, Runqing Huang, Zhongfa Hu, Xin Li   +6 more
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The Effect of Antecedent Topography on Complex Crater Formation

Geophysical Research Letters
Impact craters that form on every planetary body provide a record of planetary surface evolution. On heavily cratered surfaces, new craters that form often overlap antecedent craters, but it is unknown how the presence of antecedent craters alters impact
Don R. Hood, Brennan W. Young, Aviv L. Cohen‐Zada, Peter B. James, Ryan C. Ewing, Jeffery S. Lee   +5 more
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Lunar Surface Model Age Derivation: Comparisons Between Automatic and Human Crater Counting Using LRO‐NAC and Kaguya TC Images

Earth and Space Science, 2023
Dating young lunar surfaces, such as impact ejecta blankets and terrains associated with recent volcanic activities, provides critical information on the recent events that shaped the surface of the Moon.
J. H. Fairweather, A. Lagain, K. Servis, G. K. Benedix   +3 more
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Influence of TiN inclusions and segregation bands on the mechanical properties and ballistic performance during ballistic impact tests in low-alloy high-strength steel

Frontiers in Materials
The influence of TiN inclusions and segregation bands on the mechanical properties and ballistic performance was investigated in high-strength steel.
Keke Tong, Haoran Sun, Luxing Duan, Xiurong Zuo   +3 more
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Thermal Evolution of the Impact‐Induced Cryomagma Chamber Beneath Occator Crater on Ceres

Geophysical Research Letters, 2019
The faculae in Occator Crater on dwarf planet Ceres are an accumulation of salts that have been interpreted as cryovolcanic products. Current age estimates from crater counting suggest a maximum 18‐Ma difference between the crater forming impact and the ...
M. A. Hesse, J. C. Castillo‐Rogez
doaj   +1 more source