Results 21 to 30 of about 274 (137)

Geology of the central uplift of the Kamestastin Lake impact structure, Labrador, Canada

Meteoritics &Planetary Science, EarlyView.
Abstract The ~28 km Kamestastin (Mistastin) Lake impact structure is a relatively well‐preserved and well‐exposed complex impact structure. The central uplift of this structure is accessible as two islands in the middle of Kamestastin Lake. We present an updated, detailed geological map and description of Horseshoe and Bullseye islands that provides ...
A. C. Singleton, G. R. Osinski
wiley   +1 more source

Evolution of the lunar crust recorded in the meteoritic feldspathic regolith breccias Northwest Africa 10291 and 11182: insights into the heterogeneity and petrogenesis of crustal lithologies using petrology and mineral chemistry

, 2019
The geology of the Moon represents nearly a continuous geological record from its formation during the giant impact that resulted in the Earth-Moon system, to its state today.

core   +1 more source

Automated Mineral Identification and Rock‐Type Classification of Lunar Mare Basalts Using SEM Images

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract We present an automated system for identifying minerals and classifying rock types in Apollo lunar mare basalts using scanning electron microscopy (SEM) imagery. Mineral segmentation is based on a U‐Net architecture, supplemented by two scale‐aware models designed to incorporate pixel size information.
Ji‐In Jung, Sonia M. Tikoo, Jaehong Chung, Claire I. O. Nichols   +3 more
wiley   +1 more source

Geology and Chronology of the Lunar Taruntius Crater: Implications for the Retention Age of Lunar Ray Patterns and Lifetime of Lunar Explosive Volcanism

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract The Taruntius crater, situated between Maria Fecunditatis, Crisium, and Tranquillitatis, is characterized by a prominent bright ray system and a floor‐fractured morphology and has long been interpreted as a relatively young Eratosthenian or Copernican crater.
Longjiao Yu, Haijun Cao, Le Qiao, Zongcheng Ling   +3 more
wiley   +1 more source

Using lunar apatite to assess the volatile inventory of the Moon [PDF]

, 2013
Lunar petrology, most notably the absense of hydrous minerals (such as micas and amphiboles) and the lack of Fe2O3, imply a low oxygen activity for the Moon.
Anand, M., Tartèse, R., Franchi, I.A., Potts, N.J., van Westrenen, W.   +4 more
core  

Low Abundances of Ultramafic Components in the Chang'e‐6 Landing Site Basalt and Ejecta Material

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The South Pole‐Aitken (SPA) Basin, the Moon's largest impact structure, holds key insights into lunar evolution, prompting the Chang'e‐6 mission to return first samples for ground‐truth verification. Analysis of over 6,000 grains from the Chang'e‐6 soil returned from the SPA Basin reveals a composition dominated by clinopyroxene (26.5–32.9 vol.
Zhenbing She, Zaicong Wang, Tianyang Li, Hao Zhang, Qi He, Yiheng Li, Antong Gao, Yi Gu, Zichen Wei, Yan Zhuang, Changhao Ni, Shuang Shi, Jiawei Li, Jiawei Zhao, Wen Zhang, Jiaqi Zheng, Xu Chen, Keqing Zong, Zhaochu Hu, Xiang Wu, Long Xiao   +20 more
wiley   +1 more source

Grain Size and Fluid Effects on the Frictional Behavior of Simulated Carbonate Fault Gouge

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Carbonate rocks exhibit a span of clast and grain size in fault zones. However, the effect of grain size distribution on the frictional behavior of carbonate faults and its implications for natural and induced seismicity remain poorly understood.
Entela Kane, Anne M. H. Pluymakers, André R. Niemeijer   +2 more
wiley   +1 more source

Impact and Crystallization Modeling of the Sudbury Basin and Its Implications for a Hadean Crust

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract The 1.85 Ga Sudbury Structure hosts Earth's largest and best‐preserved impact‐induced melt sheet, the Sudbury Igneous Complex (SIC), which crystallized into distinct noritic, gabbroic, and granophyric layers. We conduct impact simulations with iSALE‐2D and crystallization modeling using alphaMELTS 2 to track the formation and evolution of the ...
Nicolas B. Litza, Miki Nakajima, J. Brian Balta, Steven B. Shirey, Dustin Trail, Kim A. Cone, Ian Szumila, Rasmus Haugaard, Taus R. C. Jørgensen, Scott D. Hull, Michael R. Ackerson   +10 more
wiley   +1 more source

Lunar Crustal Formation by Melt Migration and Differentiation Within a Stagnant Lid

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract The lunar anorthosite highlands represent the Moon's primary crust, which formed during the solidification of a magma ocean following the Moon‐forming giant impact. However, the canonical model of anorthite flotation in the crystallizing magma ocean often struggles to reproduce the long > ${ >} $200 Myr solidification timescale required by the
K. H. Dodds, C. Michaut, J. A. Neufeld
wiley   +1 more source

Alaska‐Yukon Glacier Depths From a Decade of Airborne Radar Sounding

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 6, June 2026.
Abstract NASA's Operation IceBridge employed airborne radar sounders in Alaska and adjacent northwestern Canada between 2012 and 2021 to measure the thickness of the region's glaciers. Here we present the first comprehensive analysis of these data, analyzing ∼31,700 linear‐km of radar profile data to provide over 5,500 linear‐km of ice thickness and ...
B. S. Tober, M. S. Christoffersen, J. W. Holt, M. Truffer, C. F. Larsen   +4 more
wiley   +1 more source