Zobrazeno 1 - 8
of 8
pro vyhledávání: '"D. J. Piepgras"'
Autor:
G. J. Wasserburg, D. J. Piepgras
Publikováno v:
Earth and Planetary Science Letters. 50:128-138
New data for the direct measurement of the isotopic composition of neodymium in Atlantic Ocean seawater are compared with previous measurements of Pacific Ocean seawater and ferromanganese sediments from major ocean basins. Data for Atlantic seawater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a72bfbc9f398b2190f924532460b993
https://doi.org/10.1016/0012-821x(80)90124-7
https://doi.org/10.1016/0012-821x(80)90124-7
Publikováno v:
Earth and Planetary Science Letters. 45:223-236
Sm-Nd data for authigenic ferromanganese sediments from the oceans indicate that the Atlantic, Pacific, and Indian Oceans each have a distinct range in Nd isotopic composition which are characteristic of each ocean basin and reflect the dissolved loa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1157fc863e9a958b000e3f056e5f4d7
https://doi.org/10.1016/0012-821x(79)90125-0
https://doi.org/10.1016/0012-821x(79)90125-0
Publikováno v:
Earth and Planetary Science Letters. 52:239-250
It is shown that nuclear fission could not have significantly contributed as a heat source to drive an early lunar core dynamo. Furthermore, contributions of any fissionable nuclide to the energetics of the earth's core today are very unlikely in com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d66a5b6a992b79c9691bab6aaa817c4
https://doi.org/10.1016/0012-821x(81)90178-3
https://doi.org/10.1016/0012-821x(81)90178-3
Autor:
G. J. Wasserburg, D. J. Piepgras
Publikováno v:
Geochimica et Cosmochimica Acta. 51:1257-1271
The isotopic composition of Nd in the water column from several western North Atlantic sites and formational areas for North Atlantic Deep Water shows extensive vertical structure at all locations. In regions where a thermocline is well-developed, la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35e461e577fb0b40236103f8a42d40c5
https://doi.org/10.1016/0016-7037(87)90217-1
https://doi.org/10.1016/0016-7037(87)90217-1
Autor:
D. J. Piepgras, G. J. Wasserburg
Publikováno v:
Science. 217:207-214
The isotopic composition of neodymium has been determined in seawaters from the Drake Passage. The Antarctic Circumpolar Current, which controls interocean mixing, flows through this passage. The parameter epsilon(Nd)(0) which is a function of the ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5394522132332025d6e5c4f594294a5
https://doi.org/10.1126/science.217.4556.207
https://doi.org/10.1126/science.217.4556.207
Autor:
D. J. Piepgras, G. J. Wasserburg
Publikováno v:
Earth and Planetary Science Letters. 72:341-356
We have determined the concentrations and isotopic compositions of Sr and Nd in hydrothermal fluids from 21°N, East Pacific Rise and Guaymas Basin, Gulf of California. The purest solutions analyzed from 21°N exhibit a small range in Sr concentratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b69aa1cd3272ed7b292ee0d73ec2d19
https://doi.org/10.1016/0012-821x(85)90057-3
https://doi.org/10.1016/0012-821x(85)90057-3
Autor:
G. J. Wasserburg, D. J. Piepgras
The isotopic composition of neodymium in the water column of the eastern North Atlantic near the Strait of Gibraltar has been determined for several depths. The data show that the Mediterranean outflow results in a significant shift in e_(Nd)(0) towa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b286d32c8de130c7c7bf54c403ca99b9
https://resolver.caltech.edu/CaltechAUTHORS:20131016-091716372
https://resolver.caltech.edu/CaltechAUTHORS:20131016-091716372
Publikováno v:
Geology. 8:195
Inversions of radiocarbon dates were determined on samples from the peat profiles of two small extant tree islands in the northeastern Everglades, Florida. These reversals were predicted from the theory that such tree islands developed on laterally d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df0f2965af798fc9f6b3a3efc487fe46
https://doi.org/10.1130/0091-7613(1980)8<195:refiof>2.0.co
https://doi.org/10.1130/0091-7613(1980)8<195:refiof>2.0.co