Five Years Ago Two of Us Whiled Away a Cloudy Night on the Summit of Mauna Kea in Hawaii
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Hydrothermal Origin of the Clays from the Upper Slopes of Mauna Kea, Hawaii
-The soils of the summit region of Mauna Kea are similar to the soils of the high mountain deserts and to the soils of cold deserts. Dramatic differences, however, exist between the soils of the summit and other neighboring cones and the soils of the glaciated terrain. The soils of some of the cones of the summit area are clay rich and contain phyllosilicate minerals; the soils of the glaciated...
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Consistently superb observing conditions are crucial for achieving the scientific objectives of a telescope. Submillimeter astronomy is possible only at a few exceptionally dry sites, notably Mauna Kea, the Antarctic plateau, and the Chajnantor region in the high Andes east of San Pedro de Atacama in northern Chile. Long term measurements of 225 GHz and 350μm atmospheric transparency demonstrat...
متن کاملWidespread assimilation of a seawater-derived component at Loihi Seamount, Hawaii
Many tholeiitic and transitional pillow-rim and fragmental glasses from Loihi seamount, Hawaii, have high Cl contents and Cl/K2O ratios (and ratios of Cl to other incompatible components, such as P2O5, H2O, etc.) relative to other Hawaiian subaerial volcanoes (e.g., Mauna Loa, Mauna Kea, and Kilauea). We suggest that this results from widespread contamination of Loihi magmas by a Cl-rich, seawa...
متن کاملAstronomy. Telescope clash deeply rooted in Hawaii's past.
A month after protests halted work on the Thirty Meter Telescope (TMT) on Hawaii’s Big Island, the impasse over what would be one of the world’s largest optical telescopes has deepened. Last week, as protesters continue to occupy the construction site on Mauna Kea, a 4205-meter dormant volcano, a state panel representing Native Hawaiians pulled its support for the project. The 30 April decision...
متن کاملOxygen isotope ratios in olivine from the Hawaii Scientific Drilling Project
Oxygen isotope ratios of olivine in 23 tholeiites from the Hawaii Scientific Drilling Project (HSDP) core (15 from Mauna Kea, 8 from Mauna Loa) and three samples of outcropping subaerial or dredged submarine Mauna Kea lavas have been measured by laser fluorination. The ~18o values are 4.6-5.4 %o, confirming previous observations that some Hawaiian lavas are derived from sources with ~18o values...
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تاریخ انتشار 2009