Results 81 to 90 of about 32,577 (247)
Sedimentology, Volume 73, Issue 2, Page 355-390, February 2026.ABSTRACT In‐depth ichnological and sedimentological analyses of the Cenomanian–Turonian boundary Oceanic Anoxic Event (OAE2) from the Western Interior Seaway of west‐central Alberta reveal a persistent physico‐chemically stressed setting. The interval is characterised by a dominantly diminutive and diminished ichnological assemblage, with familiar ...
Sara K. Biddle, Murray K. Gingras
wiley +1 more source
Expanding the Ichnofacies Model to Tidal Straits: Testing Predictions and Assessing Anomalies
Terra Nova, Volume 38, Issue 1, Page 19-26, February 2026.ABSTRACT Trace fossils are instrumental in facies analysis, but some depositional environments remain underexplored. Cenozoic deposits in Italy have been studied to evaluate the ichnology of tidal straits. These comprise four zones: (1) strait centre, (2) dune‐bedded strait zone, (3) strait end and (4) strait margin.
Luis A. Buatois +6 more
wiley +1 more source
Photometric Analysis of Asteroids in the Phocaea Region
The Astronomical JournalThe Phocaea asteroid family, one of the large ancient families located in the inner main belt, may be the sources of near-Earth asteroids (NEAs) due to the nearby 3:1 mean motion resonance with Jupiter, the ν 6 secular resonance, and the Yarkovsky and ...
Xiaoyun Xu +9 more
doaj +1 more source
Structure of the chondrules and the chemical composition of olivine in meteorite Jesenice
Geologija, 2013 This paper presents a mineralogical analysis of various chondrule types and chemical analysis of olivine indifferent parts of meteorite Jesenice. Quantitative energy-dispersive X-ray spectroscopy with a scanning electronmicroscope was used in the ...
Bojan Ambrožič +3 more
doaj +1 more source
Thermal Alteration of Labile Elements in Carbonaceous Chondrites
, 2018 Carbonaceous chondrite meteorites are some of the oldest Solar System planetary materials available for study. The CI group has bulk abundances of elements similar to those of the solar photosphere.
Andronikov, Alexandre +6 more
core +1 more source
The Buritizal meteorite: classification of a new Brazilian chondrite
REM: International Engineering JournalOn August 14, 1967, the reporter Saulo Gomes, working at TV Tupi, went to a small city in the State of São Paulo called Buritizal to investigate reports of a meteorite fall and write a newspaper report.
Rogerio Nogueira Salaverry +5 more
doaj +1 more source
REE Geochemistry of Euphrates River, Turkey
Journal of Chemistry, 2016 The study area is located on the Euphrates River at 38°41°32.48′′N–38°14′24.10′′N latitude and 39°56′4.59′′E–39°8°13.41′′E longitude. The Euphrates is the longest river in Western Asia. The lithological units observed from the bottom to the top are Permo-
Leyla Kalender, Gamze Aytimur
doaj +1 more source
, 2017 Meteorites contain minerals from Solar System asteroids with different properties (like size, presence of water, core formation). We provide new mid-IR transmission spectra of powdered meteorites to obtain templates of how mid-IR spectra of asteroidal ...
de Vries, B. L. +3 more
core +1 more source
Particle Accretion in Microgravity. I. Particle Sizes and Bulk Densities
The Planetary Science JournalThe precise mechanisms related to the accretion of protoplanetesimals from dust in protoplanetary disks (PPDs) are poorly understood. In order to better understand the early stages of planet formation and the growth of millimeter–centimeter agglomerates,
Akbar D. Whizin +3 more
doaj +1 more source
Mineralogy and Surface Composition of Asteroids
, 2015 Methods to constrain the surface mineralogy of asteroids have seen considerable development during the last decade with advancement in laboratory spectral calibrations and validation of our interpretive methodologies by spacecraft rendezvous missions ...
Burbine, Thomas H. +4 more
core +1 more source