Results 51 to 60 of about 20,629 (247)

The Richardton Meteorite [PDF]

The Journal of Geology, 1919
At 9:48 P.M. Mountain time, June 30, I918,' a meteorite was seen to fall in the country between Richardton and Mott, North Dakota. Pieces fell on both sides of the line between Stark and Hettinger counties within a strip about 9 miles wide from north to south and 5 miles wide from east to west. The center of this area lies in altitude 46037'30" N.
openaire   +2 more sources

Marine migration influences mercury accumulation in anadromous Arctic char (Salvelinus alpinus)

Journal of Fish Biology, EarlyView.
Abstract Mercury (Hg) is a globally distributed toxic metal present in northern natural environments that biomagnifies in food webs and bioaccumulates in apex predator fish, such as Arctic char (Salvelinus alpinus)—an iteroparous species with a circumpolar distribution. Arctic char exhibit a variety of life history types, with the migrating, anadromous
Isabel R. Hilgendag, Michael Power, Mehdi M. Aqdam, Christopher W. Lewis, Zoya Martin, Ashley D. Ehrman, Heidi K. Swanson   +6 more
wiley   +1 more source

Dawn maps the surface composition of Vesta [PDF]

, 2011
By 7-October-2011, the Dawn mission will have completed Survey orbit and commenced high altitude mapping of 4Vesta. We present a preliminary analysis of data acquired by Dawn’s Framing Camera (FC) and the Visual and InfraRed Spectrometer (VIR) to ...
Lawrence, D., Neukum, G., Tosi, F., Combe, J.P., Coradini, A., Garry, B., Zuber, M., Nathues, A., Feldman, W., Sykes, M., Buratti, B., Raymond, C.A., Titus, T., Carraro, F., Hiesinger, H., Capaccioni, F., Forni, O., McCord, T., Filacchione, G., Gaffey, M., Scully, J., Yingst, A., Blewett, D., Denevi, B., Reddy, V., Mittlefehldt, D., Jaumann, R., Toplis, M., Le Corre, L., Keller, U., Tricarico, P., Maue, T., McFadden, L., Russel, C.T., McCoy, T., De Sanctis, M.C., Fonte, S., Palmer, E., Reedy, R., McSween, H., Capria, M.T., Magni, G., Ammannito, F., Li, J.-L., Pieters, C., Sunshine, J., Prettyman, T., Marchi, S., Noschese, R.   +48 more
core  

Search and Collection of Yamato Meteorites, Antarctica, in October and November 1974

Antarctic Record, 1976
From October 25, 1974 to January 17, 1975 a four-man party of the 15th Japanese Antarctic Research Expedition (1973-1975) made an oversnow traverse to the Yamato Mountains area for a systematic search for the Yamato meteorites and geological survey.
Keizo YANAI
doaj   +1 more source

Photochemical effects of Mars‐like UV irradiation on carboxylic acids in carbonaceous chondrites and expectations for abiotic background organics on Mars

Meteoritics &Planetary Science, EarlyView.
Abstract In the search for life on Mars, understanding the origin of preserved organics is critical. Expected sources include exogenous delivery, endogenous synthesis, and potentially life. Environmental processing by ultraviolet (UV) irradiation can alter these organics, obscuring hallmarks of their origin. To deconvolve these effects, we conducted an
D. K. Buckner, J. C. Aponte, A. C. Schuerger, D. I. Foustoukos, F. Seguin, M. B. Wilhelm, G. Cooper, A. J. Williams   +7 more
wiley   +1 more source

Shear-Induced ringwoodite formation in the Martian shergottite Dar al Gani 670 [PDF]

, 2013
Shock-produced melt veins in the Martian shergottite Dar al Gani 670 crosscut large olivine crystals. The upper part of one of these crystals appears to be sheared off and displaced along the shock vein.
Fritz, Jörg, Goran, Daniel, Greshake, Ansgar, Böttger, Ute   +3 more
core   +1 more source

The Origin and Physico-Chemical Properties of Some Unusual Earth Rock Fragments

Applied Sciences, 2022
In this paper, several researches were undertaken related to a violent phenomenon, characterized by a sonic boom, felt on an area of at least 500 km2, shortly followed by the fall of rock fragments that were then recovered from the ground.
Alexandru Cocean, Cristina Postolachi, Georgiana Cocean, Georgiana Bulai, Bogdanel Silvestru Munteanu, Nicanor Cimpoesu, Iuliana Cocean, Silviu Gurlui   +7 more
doaj   +1 more source

Stardust in meteorites [PDF]

Proceedings of the National Academy of Sciences, 2011
Primitive meteorites, interplanetary dust particles, and comets contain dust grains that formed around stars that lived their lives before the solar system formed. These remarkable objects have been intensively studied since their discovery a little over twenty years ago and they provide samples of other stars that can be studied in the laboratory in ...
openaire   +2 more sources

Young asteroidal fluid activity revealed by absolute age from apatite in carbonaceous chondrite

Nature Communications, 2016
Chondritic meteorites formed in the early solar system and may tell us about primary processes at that time. Here, Zhang et al. report an absolute 207Pb/206Pb isochron age (4,450±50 Ma) of apatite from a carbonaceous chondrite constraining timing of ...
Ai-Cheng Zhang, Qiu-Li Li, Hisayoshi Yurimoto, Naoya Sakamoto, Xian-Hua Li, Sen Hu, Yang-Ting Lin, Ru-Cheng Wang   +7 more
doaj   +1 more source

Description and terrestrial ages of the Calama Area Meteorite Collection (Atacama Desert, Chile)

Meteoritics &Planetary Science, EarlyView.
Abstract We present a comprehensive study of a meteorite collection from the Atacama Desert (Chile), the driest and most climatically stable desert in the world. This collection includes meteorites from three adjacent Dense Collection Areas (DCAs) in the northern part of the Atacama Desert: Calama, Sierra Gorda, and Chug Chug, referred to as the ...
Carine Sadaka, Jérôme Gattacceca, Florian Dumas, Régis Braucher, ASTER Team, Matthieu Gounelle, Dilyara Kuzina, Cyril Lorenz, Alexandre Corgne, Pierre Sempéré   +9 more
wiley   +1 more source