Journal ArticleDOI
Weathering on land and transport of chromium to the ocean in a subtropical region (Misiones, NW Argentina): A chromium stable isotope perspective
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Bonnand et al. as mentioned in this paper investigated the pathway of chromium from its mobilization on land and along its riverine transport in a subtropical region of South America (Misiones Province, Argentina), in an attempt to link Cr stable isotope compositions recently measured in seawater with signals prevailing in rivers and, ultimately, with Cr isotope effects observed during oxidative surface weathering in subropical red soils.About:
This article is published in Chemical Geology.The article was published on 2014-08-14. It has received 98 citations till now. The article focuses on the topics: Isotopic signature & Stable isotope ratio.read more
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Global variability of chromium isotopes in seawater demonstrated by Pacific, Atlantic, and Arctic Ocean samples
Kathleen Scheiderich,Kathleen Scheiderich,Marghaleray Amini,Marghaleray Amini,Chris Holmden,Roger Francois +5 more
TL;DR: In this article, the authors presented multiple sites in the Arctic Ocean, and three locations in the Atlantic and Pacific Oceans, where the highest δ53Cr values occur in Pacific-sourced waters, which also have the lowest Cr concentration.
Journal ArticleDOI
Response of the Cr isotope proxy to Cretaceous Ocean Anoxic Event 2 in a pelagic carbonate succession from the Western Interior Seaway
TL;DR: In this article, a pelagic succession of marine carbonate sediment deposited during Cretaceous Ocean Anoxic Event 2 (OAE 2) in the Western Interior Seaway, Colorado (WIS), using the USGS Portland #1 Core was used to explore the potential of using a redox sensitive isotopic proxy with potential for tracing past oxygen levels in the oceans.
Journal ArticleDOI
Chromium fluxes and speciation in ultramafic catchments and global rivers
Cynthia N. McClain,Kate Maher +1 more
TL;DR: The role of ultramafic rock weathering in global chromium (Cr) budgets and how these may be linked to changes in Earth's climate over geological time was investigated by compiling dissolved Cr speciation and fluxes in 73 of the worlds large rivers, representing approximately 35% of global river discharge to oceans as mentioned in this paper.
Journal ArticleDOI
Human health risk assessment and environmental distribution of trace elements, glyphosate, fecal coliform and total coliform in atlantic rainforest mountain rivers (south America)
TL;DR: In this paper, the potential health risk of these trace elements, glyphosate and coliform to local population were assessed using ICP-MS, while the glyphosate was analyzed by HPLC.
Journal ArticleDOI
Processes controlling the chromium isotopic composition of river water: Constraints from basaltic river catchments
Joan D’Arcy,Michael G. Babechuk,Michael G. Babechuk,L. N. Dossing,Claudio Gaucher,Robert Frei +5 more
TL;DR: In this paper, the authors investigated the processes that control chromium (Cr) mobilization and fractionation during weathering and riverine transport to the sea and showed that the Cr isotope compositions of soils are a function of the modal abundance and weathering rates of Crbearing minerals.
References
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Journal ArticleDOI
Early Proterozoic climates and plate motions inferred from major element chemistry of lutites
H.W. Nesbitt,Grant M. Young +1 more
TL;DR: The early Proterozoic Huronian Supergroup of the north shore of Lake Huron (Fig. 1) is a thick succession of sedimentary and volcanic rocks deposited between about 2,500 and 2,100 Myr ago as discussed by the authors.
Book ChapterDOI
Rare earth elements in sedimentary rocks; influence of provenance and sedimentary processes
Journal ArticleDOI
Unraveling the effects of potassium metasomatism in sedimentary rocks and paleosols, with implications for paleoweathering conditions and provenance
TL;DR: In this article, the authors used ternary diagrams to determine the amount of K addition, premetasomatized sediment composition, and composition of provenance areas, which can be compared with the mineralogy of recent soil profiles and thus, climate and topographic conditions determined for past weathering events.
Book
1994 compilation of working values and sample description for 383 geostandards
TL;DR: In this Special Issue, working values are reported for 383 international geostandards along with sample description along with database information in the form of databases for easy access from a microcomputer in the laboratory itself.
Journal ArticleDOI
1994 report on zinnwaldite zw‐c analysed by ninety‐two git‐iwg member‐laboratories
TL;DR: In this paper, the chemical composition of Zinnwaldite ZW-C, a Li-mica, reputed difficult to analyse because of its high contents of F and rare alkali elements and the presence of refractory minerals, has been characterized.