Results 51 to 60 of about 42,838 (280)

Micromechanical testing and property upscaling of planetary rocks: A critical review

International Journal of Mining Science and Technology
Knowledge of the mechanical behavior of planetary rocks is indispensable for space explorations. The scarcity of pristine samples and the irregular shapes of planetary meteorites make it difficult to obtain representative samples for conventional ...
Yiwei Liu, Guoping Zhang, Jiangmei Qiao, Xuhai Tang   +3 more
doaj   +1 more source

Mineralogical Characterization of Baptistina Asteroid Family: Implications for K/T Impactor Source

, 2011
Bottke et al. (2007) linked the catastrophic formation of Baptistina Asteroid Family (BAF) to the K/T impact event. This linkage was based on dynamical and compositional evidence, which suggested the impactor had a composition similar to CM2 carbonaceous
Candal, Alvaro Alvarez, Carvano, Jorge M., Cloutis, Edward A., Diniz, Thais Mothé, Gaffey, Michael J., Kelley, Michael S., Lazzaro, Daniela, Michtchenko, Tatiana A., Moskovitz, Nicholas A., Reddy, Vishnu, Ryan, Erin L.   +10 more
core   +1 more source

Crystal chemistry of merrillite from Martian meteorites: Mineralogical recorders of magmatic processes and planetary differentiation [PDF]

Meteoritics & Planetary Science, 2014
AbstractMerrillite is a ubiquitous accessory phase in a variety of Martian meteorite lithologies. The Martian merrillites exhibit a positive correlation between Mg# and Na and a negative correlation between Mg# and both Mn and vacancies in the octahedral Na‐site. Their REE patterns are varied and range from LREE‐depleted to LREE‐enriched.
C. K. Shearer, P. V. Burger, J. J. Papike, F. M. McCubbin, A. S. Bell   +4 more
openaire   +1 more source

The identification and biogeochemical interpretation of fossil magnetotactic bacteria [PDF]

, 2008
Magnetotactic bacteria, which most commonly live within the oxic-anoxic transition zone (OATZ) of aquatic environments, produce intracellular crystals of magnetic minerals, specifically magnetite or greigite.
Kirschvink, Joseph L., Kopp, Robert E.
core   +1 more source

Simplified Automatic Atmospheric Correction for THEMIS Infrared Data

Earth and Space Science, 2022
Thermal infrared spectral data from the Thermal Emission Imaging System (THEMIS) on Mars Odyssey can provide diagnostic information to characterize Martian surface compositions.
Cheng Ye, Cong Pan, Christopher S. Edwards, A. Deanne Rogers   +3 more
doaj   +1 more source

Nanoscale Infrared Imaging Analysis of Carbonaceous Chondrites to Understand Organic-Mineral Interactions During Aqueous Alteration [PDF]

, 2019
Organic matter in carbonaceous chondrites is distributed in fine-grained matrix. To understand pre- and postaccretion history of organic matter and its association with surrounding minerals, microscopic techniques are mandatory.
Baden, Naoki, Kebukawa, Yoko, Kobayashi, Hanae, Kobayashi, Kensei, Kondo, Masashi, Urayama, Norio, Zolensky, Michael E.   +6 more
core   +2 more sources

Potential Subsurface Lava Tube Skylight on the Western Flank of Elysium Mons, Mars

The Astronomical Journal
The western flank of Elysium Mons, Mars, hosts a potential cave candidate (PCC) associated with a partially collapsed pit chain, previously identified in the Mars Cave Catalog.
Ravi Sharma, Chunyu Ding, Yan Su, Zhonghan Lei, Changzhi Jiang, Jiangwan Xu, YuXiao Zhi, Zihang Liang, Jiawei Li, Xiaohang Qiu, Haoyu Chen, S. N. A. Jaaffrey, (AAS Journals Data Editors)   +12 more
doaj   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Oxidation of the Interiors of Carbide Exoplanets

The Planetary Science Journal, 2020
Astrophysical measurements have shown that some stars have sufficiently high carbon-to-oxygen ratios such that the planets they host would be mainly composed of carbides instead of silicates.
H. W. Horn, E. Garhart, K. Leinenweber, V. Prakapenka, E. Greenberg, S.-H. Shim   +5 more
doaj   +1 more source

Microscopic emission and reflectance thermal infrared spectroscopy: instrumentation for quantitative in situ mineralogy of complex planetary surfaces [PDF]

Applied Optics, 2013
The diversity of investigations of planetary surfaces, especially Mars, using in situ instrumentation over the last decade is unprecedented in the exploration history of our solar system. The style of instrumentation that landed spacecraft can support is dependent on several parameters, including mass, power consumption, instrument complexity, cost ...
Edwards, C. S., Christensen, P. R.
openaire   +3 more sources