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}NASA Earthdata CMR2011 · Text
A new Holocene eruptive history of Erebus volcano, Antarctica, using cosmogenic 3He and 36Cl exposure agesThe ages of recent effusive eruptions on Erebus volcano, Antarctica are poorly known. Published 40Ar/39Ar ages of the 10 youngest ?post-caldera? lava flows are unreliable because of the young ages of the flows (<10 ka) and the presence of excess 40Ar. Here we use cosmogenic 3He and 36Cl to provide new ages for the 10 youngest flows and 3 older summit flows, including a newly recognized flow distin
NASA Earthdata CMR2002 · collection
Tephra in Siple and Taylor Dome Ice CoresThis data set consists of electron microprobe geochemical analyses of glass shards sampled from Siple Dome and Taylor Dome ice cores during the 1999-2000 field season. Geochemical data are in tab-delimited ASCII and Excel formats. Backscattered electron images of tephra samples are in TIFF format. Data are available via ftp.
NASA Earthdata CMR2002 · collection
Micrometeorites from the South Pole Water WellMicrometeorites dated between 1100 A.D. to 1500 A.D. were collected from the bottom of the South Pole Water Well in December 1995. Element analyses of 181 cosmic glass spherule and micrometeorite samples are in ASCII text and Excel spreadsheet format. Scanning Electron Microscope (SEM) images of the spherules and micrometeorites are in TIFF format. Data are available via ftp.
NASA Earthdata CMR1984 · Excel spreadsheet
Erebus hydrogen emissions, oxidation state, phase equilibria, and anorthoclase megacrystalsThe continuous measurement of molecular hydrogen (H2) emissions from passively degassing volcanoes has recently been made possible using a new generation of low-cost electrochemical sensors. We have used such sensors to measure H2, along with SO2, H2O and CO2, in the gas and aerosol plume emitted from the phonolite lava lake at Erebus volcano, Antarctica. The measurements were made at the crater r
NASA Earthdata CMRcollection
Samples of INTRUSIVE Rocks Collected During the 1985-91 ItaliAntarctic Expedition from Localities Reported and Not Reported on the Sheets of the UGGSThis data base includes field, petrographycal, geochemical and geochronological data of metamorphic rocks which were sampled in Victoria Land during six italian antarctic expeditions in the period from 1985 to 1991. Analytical work has carried out as part of the "Programma Nazionale di Ricerche in Antartide" (Sector: Earth Sciences, Research themes: A and B). Below are the localities where the res
NASA Earthdata CMRcollection
Samples of HYPOABYSSAL Rocks Collected during the 1985-91 ItaliAntarctic Expedition from Localities Included on the Sheets of the UGGSThis data base includes field, petrographycal, geochemical and geochronological data of metamorphic rocks which were sampled in Victoria Land during six italian antarctic expeditions in the period from 1985 to 1991. Analytical work has carried out as part of the "Programma Nazionale di Ricerche in Antartide" (Sector: Earth Sciences, Research themes: A and B). Below are the localities where the res
NASA Earthdata CMRExcel spreadsheet
Crystalline rocks of the Antarctic PeninsulaThis dataset consists of: (1) a suite of crystalline rocks (primarily granitoids & quartzites, with subordinate gneisses, schists, volcanic rocks, and mafic intrusive rocks) collected from the Antarctic Peninsula and adjacent islands, and (2) geochronology and geochemistry data from some of the aforementioned samples. The collection and analysis of samples in this growing database were funded by N
NASA Earthdata CMRcollection
Samples of VOLCANIC Rocks Collected during the 1985-91 ItaliAntarctic Expedition from Localities Reported not Reported on the Sheets of the UGGSThis data base includes field, petrographycal, geochemical and geochronological data of metamorphic rocks which were sampled in Victoria Land during six italian antarctic expeditions in the period from 1985 to 1991. Analytical work has carried out as part of the "Programma Nazionale di Ricerche in Antartide" (Sector: Earth Sciences, Research themes: A and B). Below are the localities where the res
NASA Earthdata CMRcollection
Beryllium in Antarctic Ultrahigh-Temperature Granulite-Facies Rocks and its Role in Partial Melting of the Lower Continental CrustText: Geologic evolution of the Napier Complex began in the Early Archean (3800 Ma) prior to a regional ultrahigh temperature metamorphic event (up to 7-11 kbar, 1050-1120 degrees C) sometime between 2550 and 2480 Ma, after which metamorphic and igneous activity was largely confined to mafic dike emplacement and amphibolite to granulite-facies events at 1600 Ma, ~1000-900 Ma and 540-520 Ma along t
NASA Earthdata CMRcollection
Samples of METAMORPHIC Rocks Collected Curing the 1985-91 Italian Antarctic Expeditions from Localities Reported and Not Reported on the Sheets of the UGGSThis data base includes field, petrographycal, geochemical and geochronological data of metamorphic rocks which were sampled in Victoria Land during six italian antarctic expeditions in the period from 1985 to 1991. Analytical work has carried out as part of the "Programma Nazionale di Ricerche in Antartide" (Sector: Earth Sciences, Research themes: A and B). Below are the localities where the res
NASA Earthdata CMRcollection
Collaborative Research: Refining a 500-kyr Climate Record From the Mt. Moulton Blue Ice Field in West AntarcticaThere is intense scientific interest in the history, dynamics and future of the West Antarctic Ice Sheet because it is the world's only remaining marine ice sheet and is considered by many to be inherently unstable and prone to catastrophic collapse and melting (e.g. Hollin, 1962; Hughes, 1973; Mercer, 1978; MacAyeal, 1992; Binschadler, 1995). If the WAIS were to collapse, global sea level would r
NASA Earthdata CMRcollection
Alkali basalt volcanism along a subduction-related magmatic arc: The case of Puyuhuapi Quaternary volcanic line, Southern Andes (44deg20minS)In Southern Chile, plate configuration is characterized by ridge-ridge-trench collision in correspondence of Taitao peninsula (Chile triple junction). The different converging rates of Nazca and Antarctic plates favored the formation of a forearc sliver (Chiloe block) limited to west by a dextral transcurrent fault system, Known as Liquine-Ofqui fault system (LOFS). During the Quatenary time, a se
NASA Earthdata CMRcollection
Sample of SEDIMENTARY rock collected during the 1985-91 ItaliAntarctic expedition from one locality reported and not reported on the sheets of the UGGSThis data base includes field, petrographycal, geochemical and geochronological data of metamorphic rocks which were sampled in Victoria Land during six italian antarctic expeditions in the period from 1985 to 1991. Analytical work has carried out as part of the "Programma Nazionale di Ricerche in Antartide" (Sector: Earth Sciences, Research themes: A and B). Below are the localities where the res
NASA Earthdata CMRcollection
Geology of Seymour Island, AntarcticaCurrently, the data set is comprised of approximately 450 granulometric analyses of 70 loose grain mineralogical preparations from 30 geological sections of Seymour Island, Antarctica. The data set also includes 100 microprobe heavy mineral analyses of sandstones from the La Meseta Formation. Fifty thin sections of sandstones from the Sobral, Cross Valley, and La Meseta Formations have been prepar
NASA Earthdata CMRExcel spreadsheet
Sedimentary rocks of Larsen basinThis dataset consists of: (1) a suite of sedimentary rocks (primarily sandstones, with subordinate mudstones, conglomerates, glauconites and volcanic ashes) collected from Cretaceous through Paleogene strata of the Larsen basin, Antarctic Peninsula, and (2) geochronology and geochemistry data from some of the aforementioned samples. The collection and analysis of samples in this growing database w