Results 81 to 90 of about 11,238 (241)
Sedimentology, EarlyView.ABSTRACT Seismic‐scale features such as deeply incised submarine valleys and mounded drifts together with ichnological features indicative of discontinuous sedimentation and erosional episodes have recently been documented from the Upper Cretaceous chalk in the southern Baltic Sea area.
Marcel Schlembach +6 more
wiley +1 more source
PLoS ONE, 2019 This study presents multiwall and bamboo-like carbon nanotubes found in samples from the Allende carbonaceous chondrite using high-resolution transmission electron microscopy (HRTEM).
Hugo I Cruz-Rosas +10 more
doaj +1 more source
Terra Nova, EarlyView.ABSTRACT Thin, discontinuous, organic‐rich oil shale beds in the siliciclastic‐evaporitic Salt Range Formation (SRF) of Pakistan are of approximate Neoproterozoic to Cambrian age based on stratigraphic constraints. The beds are enriched (26–43 wt.% total organic carbon, TOC) in aliphatic organic matter (OM) of low thermal maturity despite their ...
Paul C. Hackley +4 more
wiley +1 more source
Terra Nova, EarlyView.ABSTRACT Although central Brazil hosts significant ion‐adsorption rare earth element (REE) deposits associated with A‐type granites, their coeval volcanic counterparts have been largely overlooked as exploration targets. This study demonstrates that acidic metavolcanic rocks of the Araí Group share strong radiometric, geochemical and mineralogical ...
Yuri Ribeiro +3 more
wiley +1 more source
The dataset for the manuscript "Spectral Insights into Carbonaceous Chondrites Origins: Correlating Main-Belt Asteroids with CV Chondrites" that contains mteoritic spectral data (ATR-absorbance and respective conversion to reflectance and emissivity ...
Singh, Ankit Prakash
core +1 more source
Mineralogy and matrix composition of CR chondrites Renazzo and EET 87770, and ungrouped chondrites Essebi and MAC 87300 [PDF]
, 1991 The fine-grained mineralogy of the matrix of two CR chondrites, Renazzo and EET 87770, and the ungrouped (but possible related) Essebi and MAC 87300 chondrites was characterized using standard microprobe (focussed beam) and transmission electron ...
Zolensky, Michael E.
core
Chondrites isp. Indicating Late Paleozoic Atmospheric Anoxia in Eastern Peninsular India
The Scientific World Journal, 2014 Rhythmic sandstone-mudstone-coal succession of the Barakar Formation (early Permian) manifests a transition from lower braided-fluvial to upper tide-wave influenced, estuarine setting. Monospecific assemblage of marine trace fossil Chondrites isp.
Biplab Bhattacharya, Sudipto Banerjee
doaj +1 more source
, 2010 Dhofar (Dho) 225 and Dho 735 are carbonaceous chondrites found in a hot desert and having affinities to Belgica-like Antarctic chondrites (Belgica [B-] 7904 and Yamato [Y-] 86720).
Clayton, Robert N. +23 more
core +1 more source
On volatile/mobile trace element trends in E3 chondrites [PDF]
, 1988 P(論文)Contents of 3 non-mobile trace elements (U, Co, Au) and 12 slightly-to-highly volatile ones (Rb, Sb, Ag, Ga, Se, Cs, Te, Zn, Cd, Bi, Tl and In) determined by RNAA in the Yamato (Y)-691 and Qingzhen E3 chondrites generally fall within ranges reported
Verkouteren,R.M. +3 more
core +1 more source
Report on Antarctic meteorites search around the Sor Rondane Mountains, JARE-29 1988-1989
Antarctic Record, 1990 A systematic search for Antarctic meteorites was carried out by the Asuka winter party of the 29th Japanese Antarctic Research Expedition on the bare ice field around the Sφr Rondane Mountains in the 1987-1988 and 1988-1989 field seasons.
Hiroshi Naraoka +2 more
doaj +1 more source