Zobrazeno 1 - 10 of 26 pro vyhledávání: '"Donald M. Burt"'
1
Layered sediments on Mars deposited by impacts instead of by liquid water
Autor: Donald M. Burt
Layered deposits on Mars imaged by the three rovers are generally inferred to have been deposited by liquid water (or wind or volcanism), consistent with interpretations based on orbital imaging. This interpretation implies early Mars was warm and we
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ab5971671393e71ee2af509a42fde53
https://doi.org/10.1130/2021.2553(27)
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5
Surge deposit misidentification at Spor Mountain, Utah and elsewhere: A cautionary message for Mars
Autor: Michael F. Sheridan, L. P. Knauth, Donald M. Burt, Kenneth H. Wohletz
Publikováno v: Journal of Volcanology and Geothermal Research. 177:755-759
Before base surges were described in association with nuclear blasts and explosive volcanic eruptions (especially, the 1980 eruption of Mount St. Helens, Washington), laminar and cross-bedded volcanogenic surge deposits were commonly misinterpreted a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6c9a9c02ce1eaf7e585ed8fce0fcf63
https://doi.org/10.1016/j.jvolgeores.2008.01.044
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6
Eutectic Brines on Mars: Origin and Possible Relation to Young Seepage Features
Autor: Donald M. Burt, L. Paul Knauth
Publikováno v: Icarus. 158:267-271
If the recently observed young gullies on Mars represent seeps or outflows of aqueous fluid, that fluid must be highly concentrated brine to be even moderately stable under current martian surface conditions. Such brines are to be expected in the meg
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2015112e9e662b3464c2d7f6e7b94fcb
https://doi.org/10.1006/icar.2002.6866
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7
Volatile and lithophile trace-element geochemistry of Mexican tin rhyolite magmas deduced from melt inclusions
Autor: James D. Webster, R.A. Aguillon, Donald M. Burt
Publikováno v: Geochimica et Cosmochimica Acta. 60:3267-3283
We have investigated the petrology and geochemistry of whole rocks from two small-volume, Sn- and F-mineralized rhyolitec dome complexes of the Mexican tin rhyolite belt, Cerro el Lobo and Cerro el Pajaro, to determine volcanic degassing and minerali
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e03f2158a8fdcb7164010fe3af6735ef
https://doi.org/10.1016/0016-7037(96)00163-9
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8
Apatite, phosphorus and titanium in eclogitic garnet from the upper mantle
Autor: Donald M. Burt, Stephen E. Haggerty, Agnes T. Fung
Publikováno v: Geophysical Research Letters. 21:1699-1702
The existence of apatite exsolution lamellae in garnet supports earlier suggestions that garnet is a major repository for P in the mantle, and that P is strongly coupled to Na+Ti. The bulk P content (∼250 ppm) of mantle eclogites is unexpectedly si
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fdbfa25e067b7169c619cd2e96c04d80
https://doi.org/10.1029/94gl01001
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10
Impact origin of sediments at the Opportunity landing site on Mars
Autor: L. Paul Knauth, Donald M. Burt, Kenneth H. Wohletz
Publikováno v: Nature. 438(7071)
Mars Exploration Rover Opportunity discovered sediments with layered structures thought to be unique to aqueous deposition and with minerals attributed to evaporation of an acidic salty sea. Remarkable iron-rich spherules were ascribed to later groun
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e45f154b46893c8e8bc1b5e1b72e6cd5
https://pubmed.ncbi.nlm.nih.gov/16371989
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