Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Haraldur R. Karlsson"'
Autor:
Haraldur R. Karlsson, Tore Prestvik, Øystein Nordgulen, Calvin G. Barnes, Aaron S. Yoshinobu, Bjørn Sundvoll
Publikováno v:
Journal of Petrology. 43:2171-2190
distinct, with Nd and O in the migmatites from −7·6 to −9·6 The dioritic Velfjord plutons (>448 Ma) were emplaced into and from +10·9‰ to +13·5‰, and in the contact granites regional migmatitic metapelitic and metacarbonate rocks at midfr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b82612808649a58874f648212eea0a8
https://doi.org/10.1093/petrology/43.12.2171
https://doi.org/10.1093/petrology/43.12.2171
Publikováno v:
Contributions to Mineralogy and Petrology. 142:564-581
The Middle Cretaceous Cornucopia stock in the Blue Mountains of northeastern Oregon is a small composite intrusion consisting of hornblende biotite tonalite, biotite trondhjemite, and three cordierite two mica trondhjemite units. Unusual magnetite +
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab092e3d10968e615bfc246185da82b1
https://doi.org/10.1007/s00410-001-0311-z
https://doi.org/10.1007/s00410-001-0311-z
Publikováno v:
Earth and Planetary Science Letters. 190:211-220
The currently active off-rift central volcano Oraefajokull in south-east Iceland sits unconformably on much older (∼10–12 Ma) and eroded crust. The composition of recent volcanics ranges from basalt to rhyolite, but the series is more sodic alkal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4842de975926bd8337f100f1c8548277
https://doi.org/10.1016/s0012-821x(01)00390-9
https://doi.org/10.1016/s0012-821x(01)00390-9
Autor:
Bradford R. Burton, Trina C. Burling, James E. Wright, Calvin G. Barnes, Haraldur R. Karlsson
Publikováno v:
Journal of Petrology. 42:901-929
which suggest a single mixing event before emplacement in the upper The late Eocene Harrison Pass pluton was emplaced in the crust. Late-stage activity consisted of three pulses of monzogranitic transition zone between the infrastructure and suprastr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8036b4e928de5849bc02f920e59f8d4d
https://doi.org/10.1093/petrology/42.5.901
https://doi.org/10.1093/petrology/42.5.901
Autor:
Haraldur R. Karlsson
Publikováno v:
Reviews in Mineralogy and Geochemistry. 45:163-205
Two of the most important variables that can be determined in any geologic study are the timing and conditions of formation. Although the discovery of radioactivity and isotopes at the beginning of this century revolutionized our understanding of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d90e5f35ca62d99cb7505ef7637cb14
https://doi.org/10.2138/rmg.2001.45.4
https://doi.org/10.2138/rmg.2001.45.4
Publikováno v:
Lithos. 46:317-330
Plugs of alkaline volcanic rocks (≈56 Ma) penetrating Mesozoic sediments crop out at 63°25′N on the continental shelf off Norway. The rocks are highly silica-undersaturated, comprising both nephelinites and basanite. The nephelinitic rocks are p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::572696295b15a39c8b2ef7e40eb05156
https://doi.org/10.1016/s0024-4937(98)00088-7
https://doi.org/10.1016/s0024-4937(98)00088-7
Autor:
Haraldur R. Karlsson
Publisher Summary A handful of the available molecular sieve materials are utilized in isotope work. Molecular sieve or trapping processes are rarely used in combination. A small pore sieve could be used to separate small molecules from large ones. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ab19714ae3d592c5b680dafea2683f2
https://doi.org/10.1016/b978-044451114-0/50038-7
https://doi.org/10.1016/b978-044451114-0/50038-7
Publikováno v:
Analytical Chemistry. 64:829-831
The need for a rapid, inexpensive technique for routine 18O/16O extraction from water has arisen recently through applications in the medical sciences and in hydrology. The traditional experimental technique for determining the oxygen isotope composi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38943aaccd11dd93b49f6b2f6d287deb
https://doi.org/10.1021/ac00031a026
https://doi.org/10.1021/ac00031a026
Publikováno v:
Science (New York, N.Y.). 255
The Shergotty-Nakhla-Chassigny (SNC) meteorites, purportedly of martian origin, contain 0.04 to 0.4 percent water by weight. Oxygen isotopic analysis can be used to determine whether this water is extraterrestrial or terrestrial. Such analysis reveal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4743f7d9e28d6436891cf8fb9c18642a
https://pubmed.ncbi.nlm.nih.gov/11537889
https://pubmed.ncbi.nlm.nih.gov/11537889