Results 71 to 80 of about 257,482 (231)

Raman, MIR, VNIR, and LIBS Spectra of Szomolnokite, Rozenite, and Melanterite: Martian Implications

Universe
Different sulfates (Ca-, Mg, and Fe- sulfates) have been extensively detected on the Martian surface. As one of the Martian sulfates, the presence of ferrous sulfates will provide valuable clues about the redox environment, hydrological processes, and ...
Xiai Zhuo, Ruize Zhang, Erbin Shi, Jiahui Liu, Zongcheng Ling   +4 more
doaj   +1 more source

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

Journal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry, David Small, Oliver T. Bartlett, Jonathan Newitt   +3 more
wiley   +1 more source

The stellar Mg/Si, C/O, Ca/Si, Al/Si, Na/Si, and Fe/Si ratios and the mineral diversity of rocky exoplanets

Open Astronomy
The bulk planetary compositions are thought to be consistent with the chemical abundances of their host stars. The abundances of eight key rock-forming elements and the key planetary abundance ratios in G- and F-type main sequence stars located in the ...
Futó Péter, Gucsik Arnold
doaj   +1 more source

Lunar and Planetary Science twenty-five

, 1994
You must extract the zipped files before using. To begin viewing the abstracts, click on the file "index.html."Papers from the conference are presented, and the topics covered include the following: planetary geology, meteorites, planetary composition ...

core  

Ngarrawa (mound spring) sediments as archives of Holocene environmental change in arid central Australia: Insights from Itrax XRF scanning

Journal of Quaternary Science, EarlyView.
ABSTRACT Central Australia's ngarrawa, or ‘mound springs’, are unique hydrological systems that serve as some of the only near‐permanent sources of water and continuous sediment deposition in Australia's arid interior. As such, they hold significant potential as palaeo‐climate and ‐environmental archives in a region where many aspects of past climate ...
Fletcher C. Nixon, Jonathan J. Tyler, Patricia S. Gadd, Quan Hua   +3 more
wiley   +1 more source

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

Journal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine, Joost Frieling, Bernd Wagner, Martin Melles, Volker Wennrich, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

UV–Vis–NIR Reflectance Spectra of Ilmenite Mixtures: Implications for Estimation of TiO2 Content in Lunar Mare Regions

The Planetary Science Journal
We performed spectral measurements on mixtures of ilmenite powder (
Moe Matsuoka, Satoru Yamamoto
doaj   +1 more source

The environment impact of 660 million footfalls during the Mahakumbh Mela-2025 based on sediment mineralogy, magnetic measurements and particle size analysis

Geosystems and Geoenvironment
The environmental impact assessment of 660 million human congregation, observed between January 13 and February 26, 2025 during the Mahakumbh Mela (Prayagraj, India) event, is presented here. This study is based on 200 alluvial sediment samples collected
Shivanshu Dwivedi, Anuj Kumar Singh, Jayanta Kumar Pati, Mrigank Mauli Dwivedi   +3 more
doaj   +1 more source

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

Journal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio, Luca Aldega, Luigi Dallai, Mario Gaeta, Fabrizio Marra   +4 more
wiley   +1 more source

Lunar and Planetary Science twelve

, 1981
You must extract the zipped files before using. To begin viewing the abstracts, click on the file "index.html."Topics related to the mineralogy and petrology of lunar pristine rocks are considered, along with subjects concerning the mineralogy and ...

core