Browsing Institute's contributions by Author "Taylor, S."
Now showing items 1-8 of 8
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Evaluating changes in the elemental composition of micrometeorites during entry into the earth`s atmosphere
Rudraswami, N.G.; ShyamPrasad, M.; Dey, S.; Plane, J.M.C.; Feng, W.; Taylor, S. (The American Astronomical Society, 2015)We evaluate the heating of extraterrestrial particles entering the atmosphere using the comprehensive chemical ablation model (CABMOD). This model predicts the ablation rates of individual elements in a particle with a ... -
Fine-grained volatile components ubiquitous in solar nebula: Corroboration from scoriaceous cosmic spherules
Rudraswami, N.G.; Fernandes, D.; Naik, A.K.; ShyamPrasad, M.; Taylor, S. (John Wiley & Sons, 2018)The scoriaceous cosmic spherules (CSs) that make up to a few percent (for sizes >150 -m size) of total micrometeorite flux are ubiquitous and have remained enigmatic. The present work provides in-depth study of 81 scoriaceous ... -
In-situ O-isotope analysis of relict spinel and forsterite in small (<200µm) Antarctic micrometeorites - Samples of chondrules & CAIs from carbonaceous chondrites
Rudraswami, N.G.; Suttle, M.D.; Marrocchi, Y.; Taylor, S.; Villeneuve, J. (Elsevier, 2022)We report high-precision secondary ion mass spectrometer triple oxygen isotope systematics (95 individual analyses) from 37 micrometeorites (MMs) collected from South Pole Water Well (SPWW), Antarctica. The study population ... -
Oxygen isotopic and chemical composition of chromites in micrometeorites: Evidence of ordinary chondrite precursors
Rudraswami, N.G.; Marrocchi, Y.; ShyamPrasad, M.; Fernandes, D.; Villeneuve, J.; Taylor, S. (2019)We identified 66 chromite grains from 42 of ~5000 micrometeorites collected from Indian Ocean deep-sea sediments and the South Pole water well. To determine the chromite grains precursors and their contribution to the ... -
Perceptive of the pyroxene-bearing micrometeorites and their relation to chondrites
Rudraswami, N.G.; Fernandes, D.; DeAraujo, A.; ShyamPrasad, M.; Taylor, S. (John Wiley & Sons, 2018)We studied 149 pyroxenes from 69 pyroxene-bearing micrometeorites collected from deep-sea sediments of the Indian Ocean and South Pole Water Well at Antarctica, Amundsen-Scott South Pole station. The minor elements in ... -
Relict olivines in micrometeorites: Precursors and interactions in the earth`s atmosphere
Rudraswami, N.G.; ShyamPrasad, M.; Dey, S.; Fernandes, D.; Plane, J.M.C.; Feng, W.; Taylor, S.; Carrillo-Sanchez, J.D. (American Astronomical Society, 2016)Antarctica micrometeorites (~1200) and cosmic spherules (~5000) from deep sea sediments are studied using electron microscopy to identify Mg-rich olivine grains in order to determine the nature of the particle precursors. ... -
Selective Disparity of Ordinary Chondritic Precursors in Micrometeorite Flux
Rudraswami, N.G.; Fernandes, D.; Naik, A.K.; ShyamPrasad, M.; Carrillo-Sánchez, J.D.; Plane, J.M.C.; Feng, W.; Taylor, S. (IOP Publishing, 2018)All known extraterrestrial dust (micrometeoroids) entering the Earth's atmosphere is anticipated to have a significant contribution from ordinary chondritic precursors, as seen in meteorites, but this is an apparent ... -
The Oxygen Isotope Compositions of Large Numbers of Small Cosmic Spherules: Implications for Their Sources and the Isotopic Composition of the Upper Atmosphere
Rudraswami, N.G.; Genge, M.J.; Marrocchi, Y.; Villeneuve, J.; Taylor, S. (American Geophysical Union (AGU), 2020)Cosmic spherules are micrometeorites that melt at high altitude as they enter Earth’s atmosphere and their oxygen isotope compositions are partially or completely inherited from the upper atmosphere, depending on the ...