Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Stephen D. Weaver"'
Publikováno v:
Computers & Geosciences. 35:836-854
Simply placing electronic geoscience resources such as datasets, methods, ontologies, workflows and articles in a digital library or cyberinfrastructure does not mean that they will be used successfully by other researchers or educators. It is also n
Autor:
Mark Gahegan, Stephen D. Weaver
Publikováno v:
Geographical Review. 97:324-350
Herein, we discuss the desire for new technology, the need for security, and the right to privacy; in doing so, we argue that each of these concerns comprises an important, tripartite debate. To hi...
Autor:
Mark Gahegan, Brent Yarnal, William Pike, Alan M. MacEachren, Stephen D. Weaver, Chaoqing Yu, Isaac Brewer
Publikováno v:
Computers, Environment and Urban Systems. 30:201-225
Collaboratories have been defined as centers without walls , virtual places where teams of scientists can undertake coordinated research. As part of the Human–Environment Regional Observatory (HERO) infrastructure project, we have been developing a
Autor:
Robert J. Pankhurst, Simon P. Kelley, John D. Bradshaw, Philip T. Leat, Bryan C. Storey, Stephen D. Weaver
Publikováno v:
Journal of the Geological Society. 156:659-671
Ocean floor magnetic anomalies show that New Zealand was the last continental fragment to separate from Antarctica during Gondwana break-up, drifting from Marie Byrd Land, West Antarctica, about 84 Ma ago. Prior to continental drift, a voluminous sui
Publikováno v:
Lithos. 45:469-482
Regional geochronological studies indicate that mid-Cretaceous plutonism (the Hohonu Suite at ∼110 Ma) in the Hohonu Batholith, Western Province of New Zealand, occurred during a period of rapid tectonic change in the SW Pacific portion of Gondwana
Publikováno v:
Contributions to Mineralogy and Petrology. 130:225-239
Geochemical studies on the Hohonu Batholith, of the West Coast, South Island, New Zealand, have recognised two distinct but chemically related suites of mid-Cretaceous granitoids. The suites are characterised by restricted radiogenic isotopic composi
Autor:
R. Jongens, R. J. Muir, John D. Bradshaw, Stephen D. Weaver, Tod E. Waight, Trevor Ireland, G.N. Eby
Publikováno v:
New Zealand Journal of Geology and Geophysics. 40:453-463
Ion microprobe U‐Pb zircon ages have been obtained from four samples of Cretaceous granitoid and two samples of volcanogenic sediment from the northwest Nelson‐Westland region of the South Island of New Zealand. Crow Granite, which intrudes lower
Autor:
Stuart F. Simmons, Stephen D. Weaver
Publikováno v:
Journal of Volcanology and Geothermal Research. 68:vii
Publikováno v:
Contributions to Mineralogy and Petrology. 68:151-169
Bransfield Strait is a narrow basin separating the South Shetland Islands from the Antarctic Peninsula and is attributed to recent back-arc extension behind the South Shetland volcanic arc. The volcanic islands of Deception and Bridgeman are situated
Publikováno v:
Earth and Planetary Science Letters. 46:344-360
Magnetic activity throughout the Antarctic Peninsula and the South Shetland Islands has been dominantly of a calc-alkaline nature for the last 200 Ma. Chemically, the plutonic and volcanic products are typical of a continental margin magmatic arc, si