Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Richard D. Ash"'
Autor:
Elena R. Schroeter, Paul V. Ullmann, Kyle Macauley, Richard D. Ash, Wenxia Zheng, Mary H. Schweitzer, Kenneth J. Lacovara
Publikováno v:
Biology, Vol 11, Iss 8, p 1158 (2022)
Evidence that organic material preserves in deep time (>1 Ma) has been reported using a wide variety of analytical techniques. However, the comprehensive geochemical data that could aid in building robust hypotheses for how soft-tissues persist over
Externí odkaz:
https://doaj.org/article/95de83bf6b694b44bf569a16dd7b1102
Publikováno v:
Biology, Vol 11, Iss 8, p 1177 (2022)
Recent recoveries of peptide sequences from two Cretaceous dinosaur bones require paleontologists to rethink traditional notions about how fossilization occurs. As part of this shifting paradigm, several research groups have recently begun attempting
Externí odkaz:
https://doaj.org/article/e811f805fb0e43ebbd92ad3885f409fb
Autor:
Patricia L. Clay, James M.D. Day, Henner Busemann, Pierre Bonnand, Ray Burgess, Richard A. Hornsey, Richard D. Ash, Frédéric Moynier, Brian O’Driscoll
Publikováno v:
Geology. 51:602-606
The ca. 3.5 Ga Bon Accord Ni deposit was located in the Barberton Greenstone Belt of the Kaapvaal Craton, South Africa, and contained a unique assemblage of Ni-rich minerals including trevorite (NiFe2O4). It was initially interpreted as a metamorphos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5851b0071b6c498e07104033b27b822
https://doi.org/10.1130/g51030.1
https://doi.org/10.1130/g51030.1
Publikováno v:
Geochimica et Cosmochimica Acta. 340:108-119
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a303c70317ea026a85cd1fd5b550efae
https://doi.org/10.1016/j.gca.2022.11.016
https://doi.org/10.1016/j.gca.2022.11.016
Publikováno v:
Biology, Vol 10, Iss 11, p 1193 (2021)
Many recent reports have demonstrated remarkable preservation of proteins in fossil bones dating back to the Permian. However, preservation mechanisms that foster the long-term stability of biomolecules and the taphonomic circumstances facilitating t
Externí odkaz:
https://doaj.org/article/9c0732e5b7684c2fa98fff00845a27d9
Publikováno v:
Geochimica et Cosmochimica Acta. 318:112-125
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7900fc39a185e2dc923c7cf69567b663
https://doi.org/10.1016/j.gca.2021.11.035
https://doi.org/10.1016/j.gca.2021.11.035
Publikováno v:
Earth and Planetary Science Letters. 612:118162
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08672b0cb8e5fea62affa447436e8dde
https://doi.org/10.1016/j.epsl.2023.118162
https://doi.org/10.1016/j.epsl.2023.118162
Publikováno v:
Meteoritics & Planetary Science. 55:2570-2586
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12c9e5e29c9e6715d9589afec41f3171
https://doi.org/10.1111/maps.13602
https://doi.org/10.1111/maps.13602
Publikováno v:
Geochim Cosmochim Acta
The eight iron meteorites currently classified as belonging to the IIC group were characterized with respect to the compositions of 21 siderophile elements. Several of these meteorites were also characterized for mass independent isotopic composition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b2d3067690b871de17bbf14f6433831
https://doi.org/10.1016/j.gca.2020.07.036
https://doi.org/10.1016/j.gca.2020.07.036
Autor:
Kristyn K. Voegele, David E. Grandstaff, Mary Higby Schweitzer, Elena R. Schroeter, Wenxia Zheng, Richard D. Ash, Kenneth J. Lacovara, Paul V. Ullmann
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
Scientific Reports
Scientific Reports
The rare earth element (REE) composition of a fossil bone reflects its chemical alteration during diagenesis. Consequently, fossils presenting low REE concentrations and/or REE profiles indicative of simple diffusion, signifying minimal alteration, h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52351d045f53778f6c397c43a8ed9e51
http://link.springer.com/article/10.1038/s41598-020-72648-6
http://link.springer.com/article/10.1038/s41598-020-72648-6