Results 21 to 30 of about 12,178 (304)

Numerical Modeling of an Asteroid Impact on Earth: Matching Field Observations at the Chicxulub Crater Using the Distinct Element Method (DEM)

Geosciences, 2023
In recent years, an international consortium of research organizations conducted investigations at the Chicxulub Crater in Yucatan, Mexico, to better understand the crater’s formation mechanisms and the effects produced by the impact of the asteroid that
Tam N.-M. Duong, Billy Hernawan, Zenon Medina-Cetina, Jaime Urrutia Fucugauchi   +3 more
doaj   +1 more source

Evaluation of Geomorphological Evidences for Possible Impact Crater of Zirouki in Sistan and Baluchestan, SE Iran [PDF]

مخاطرات محیط طبیعی, 2014
Despite the extensive studies on geomorphological phenomena in Iran, since investigation of meteorite impact craters h not been considered. Based on both remote sensing technique and field work we have recognized the circular structure of Zirouki crater ...
Mohammadreza Mansouri Daneshvar, Somayye Rezaei   +1 more
doaj   +1 more source

Microbial Life in Impact Craters [PDF]

Current Issues in Molecular Biology, 2020
Asteroid and comet impacts are known to have caused profound disruption to multicellular life, yet their influence on habitats for microorganisms, which comprise the majority of Earth's biomass, is less well understood. Of particular interest are geological changes in the target lithology at and near the point of impact that can persist for billions of
Cockell, Charles S., Osinski, Gordon, Sapers, Haley, Pontefract, Alexandra, Parnell, John   +4 more
openaire   +3 more sources

Experimental Investigation of the Crater Caused by Hypervelocity Rod Projectile Impacting on Rocks

Shock and Vibration, 2020
To investigate the cratering effects of hypervelocity rod projectile impacting on rocks, a two-stage light gas gun was used to carry out 10 groups of small-scale experiments, whose velocity ranges from 1.5 km/s to 4.1 km/s.
Yanyu Qiu, Songlin Yue, Mingyang Wang, Gan Li, Yihao Cheng, Zhangyong Zhao, Zhongwei Zhang   +6 more
doaj   +1 more source

Full waveform tomographic images of the peak ring at the Chicxulub impact crater [PDF]

, 2011
17/06/013 PDF version attached, OK to pub.Peak rings are a feature of large impact craters on the terrestrial planets and are generally believed to be formed from deeply buried rocks that are uplifted during crater formation.
Grieve, R. A. F., J. V. Morgan, P. J. Barton, G. L. Christeson, Morgan, J. V., Gulick, S. P. S., Warner, MR, R. A. F. Grieve, Barton, PJ, Christeson, G. L., Grieve, RAF, Warner, M. R., Morgan, JV, M. R. Warner, S. P. S. Gulick, Christeson, GL, Gulick, SPS, Collins, G. S., G. S. Collins, Collins, GS, Barton, P. J.   +20 more
core   +1 more source

Polygonal impact craters on Ganymede

Meteoritics & Planetary Science, 2023
AbstractPolygonal impact craters (PICs) are unique geological features observed on various planetary bodies and constitute a small percentage of the impact crater population. This study focuses on PICs on Ganymede, where no such craters have been investigated so far. Here we present the distribution of PICs, examine their morphological characteristics,
Namitha Rose Baby, Thomas Kenkmann, Katrin Stephan, Roland Wagner   +3 more
openaire   +6 more sources

Particle size distributions inside and around the artificial crater produced by the Hayabusa2 impact experiment on Ryugu

Earth, Planets and Space, 2022
Japanese Hayabusa2 spacecraft has successfully carried out an impact experiment using a small carry-on impactor (SCI) on an asteroid (162173) Ryugu. We examine the size distribution of particles inside and outside an artificial impact crater (the SCI ...
K. Ogawa, N. Sakatani, T. Kadono, M. Arakawa, R. Honda, K. Wada, K. Shirai, Y. Shimaki, K. Ishibashi, Y. Yokota, T. Saiki, H. Imamura, Y. Tsuda, S. Nakazawa, Y. Takagi, M. Hayakawa, H. Yano, C. Okamoto, Y. Iijima, T. Morota, S. Kameda, E. Tatsumi, Y. Cho, K. Yoshioka, H. Sawada, M. Matsuoka, M. Yamada, T. Kouyama, H. Suzuki, C. Honda, S. Sugita   +30 more
doaj   +1 more source

Shock-Induced Damage in Rocks: Application to Impact Cratering [PDF]

, 2006
Shock-induced damage beneath impact craters is studied in this work. Two representative terrestrial rocks, San Marcos granite and Bedford limestone, are chosen as test target.
Ai, Huirong (Anita)
core   +1 more source

Geological and geophysical investigation of Kamil crater, Egypt [PDF]

, 2012
We detail the Kamil crater (Egypt) structure and refine the impact scenario, based on the geological and geophysical data collected during our first expedition in February 2010.
Mahfooz Hafez, El Khrepy, S., El Barkooky, A., Mohamed El Gabry, D’Orazio, M., Antonio Zeoli, Luigi Folco, El Gabry, M., Sami El Khrepy, Ali M. Radwan, Mohamed El Sharkawi, Massimo D’orazio, Radwan, A. M., El Sharkawi, M., Ahmed Lethy, Barakat, A., Aly Barakat, Urbini, S., Zeoli, A., Hafez, M., Ahmed El Barkooky, Gomaa, M., Mahomoud GOMAA, Iacopo Nicolosi, Nicolosi, I., Stefano Urbini, Lethy, A., Folco, L.   +27 more
core   +2 more sources

On the importance of self-secondaries

Geoscience Letters, 2018
Self-secondaries are secondary craters that are formed on both the continuous ejecta deposits and interior of the parent crater. The possible existence of self-secondaries was proposed in the late 1960s, but their identity, formation mechanism, and ...
Zhiyong Xiao
doaj   +1 more source