Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Kym Jarvis"'
Publikováno v:
International Journal of Astrobiology. Apr2004, Vol. 3 Issue 2, p97-106. 10p.
Autor:
Ricardo Baitelli, Kym Jarvis, Sergio R. Dillenburg, Lauro Valentim Stoll Nardi, Carla Ennes de Barros, Ricardo Ayup
Publikováno v:
Journal of Coastal Research. 261:80-93
The trace element content of zircon grains from Holocene beach sands from the Rio Grande do Sul state in southern Brazil was investigated in order to discuss their probable primary source. Zircon grains from 10 samples were separated and analysed by
Publikováno v:
The Canadian Mineralogist. 47:833-846
Zircon concentrates from samples of a granodiorite, rhyolite, quartz monzonite, monzonite, and diorite from the Lavras do Sul Shoshonitic Association (LSSA) were analyzed by LA–ICP–MS for trace elements including the REE after petrographic and mi
Publikováno v:
Applied Geochemistry. 21:1681-1691
Inductively coupled plasma mass spectrometry (ICP-MS) was used to investigate changes in trace element concentration in two high resolution sequences of tree rings from central Sweden. Individual annual growth increments from 1800–2002 to 1930–20
Publikováno v:
Journal of Archaeological Science. 32:1265-1274
Discussion of the significance of volcanically induced impacts on human history, the natural environment, and climate through the Holocene, has frequently stalled because of controversy concerning certain key volcanic eruptions and their precise rela
Publikováno v:
Journal of Archaeological Science. 31:1161-1173
A trade in carnelian from Gujarat, especially the town of Khambhat, and parts of sub-Saharan Africa is often discussed in the literature. To date, such assertions have been based upon putative visual parallels between African and Indian samples, and
Publikováno v:
Chemical Geology. 207:135-145
Comparison is made of apatite fission-track (FT) ages measured by using conventional thermal neutron irradiation and Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) to determine sample uranium content. Spontaneous track densit
Publikováno v:
International Journal of Astrobiology. 3:97-106
Lichen-dominated cryptoendolithic communities from the Dry Valleys of Antarctica have been the subject of much research over recent years owing to their potential as analogues of Martian life forms. Their ability to mobilize iron compounds and organi
Publikováno v:
Atmospheric Environment. 37:2391-2402
A study has been conducted of the concentrations of a range of inorganic elements and polycyclic aromatic hydrocarbons during a winter period at a roadside location in Birmingham, UK. Particle number and NOx concentrations were also determined contin
Publikováno v:
Marine Chemistry. 76:319-330
The study of aerosols and rainwater presented here demonstrates that episodic atmospheric deposition events associated with southeasterly flow are quantitatively significant for large areas of the North Atlantic Ocean. This paper considers aluminium