scholarly journals Review and Assessment of Organic and Inorganic Rare Earth Element Complexation in Soil, Surface Water, and Groundwater

2020 ◽  
Author(s):  
Michael Aide
Keyword(s):  
Rare Earth ◽  
Surface Water ◽  
Rare Earth Element ◽  
Earth Element ◽  
Soil Surface ◽  
Surface Water And Groundwater

scholarly journals Natural and Anthropogenic Geochemical Tracers to Investigate Residence Times and Groundwater–Surface-Water Interactions in an Urban Alluvial Aquifer

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 871
Author(s):  
Connor P. Newman ◽  
Suzanne S. Paschke ◽  
Gabrielle Keith
Keyword(s):  
Rare Earth ◽  
Surface Water ◽  
Rare Earth Element ◽  
Earth Element ◽  
Flow System ◽  
Alluvial Aquifer ◽  
Residence Times ◽  
Geochemical Tracers ◽  
Recharge Sources ◽  
Wastewater Indicator

A multi-component geochemical dataset was collected from groundwater and surface-water bodies associated with the urban Fountain Creek alluvial aquifer, Colorado, USA, to facilitate analysis of recharge sources, geochemical interactions, and groundwater-residence times. Results indicate that groundwater can be separated into three distinct geochemical zones based on location within the flow system and proximity to surface water, and these zones can be used to infer sources of recharge and groundwater movement through the aquifer. Rare-earth-element concentrations and detections of wastewater-indicator compounds indicate the presence of effluent from wastewater-treatment plants in both groundwater and surface water. Effluent presence in groundwater indicates that streams in the area lose to groundwater in some seasons and are a source of focused groundwater recharge. Distributions of pharmaceuticals and wastewater-indicator compounds also inform an understanding of groundwater–surface-water interactions. Noble-gas isotopes corroborate rare-earth-element data in indicating geochemical evolution within the aquifer from recharge area to discharge area and qualitatively indicate variable groundwater-residence times and mixing with pre-modern groundwater. Quantitative groundwater-residence times calculated from 3H/3He, SF6, and lumped-parameter modeling generally are less than 20 years, but the presence of mixing with older groundwater of an unknown age is also indicated at selected locations. Future investigations would benefit by including groundwater-age tracers suited to quantification of mixing for both young (years to decades) and old (centuries and millennia) groundwater. This multi-faceted analysis facilitated development of a conceptual model for the investigated groundwater-flow system and illustrates the application of an encompassing suite of analytes in exploring hydrologic and geochemical interactions in complex systems.

Rare earth element and Yttrium (REY) geochemistry of Cenozoic carbonates on the Xuande Atoll of the Xisha Archipelago, the South China Sea: Implications of the impact of dolomitization on REY

2017 ◽  
Vol 51 (6) ◽  
pp. 507-523
Author(s):  
Zhenfeng Wang ◽  
Keke Huang ◽  
Daojun Zhang ◽  
Xinyu Liu ◽  
Wei Luo ◽  
...  
Keyword(s):  
Rare Earth ◽  
South China Sea ◽  
Rare Earth Element ◽  
South China ◽  
Earth Element ◽  
The South China Sea ◽  
China Sea ◽  
Xisha Archipelago ◽  
The Impact ◽  
Rey Geochemistry

RARE EARTH ELEMENT AND THORIUM ASSAYING IN PARTS OF THE EAST COAST, INDIA

2016 ◽  
Author(s):  
Shayantani Ghosal ◽  
◽  
Sudha Agrahari ◽  
Debashish Sengupta
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
East Coast

RARE EARTH ELEMENT AND CRITICAL MATERIAL OCCURRENCE AND DISTRIBUTION IN POWDER RIVER BASIN COAL CORE, WYOMING

2019 ◽  
Author(s):  
Davin A. Bagdonas ◽  
◽  
Charles Nye ◽  
Erin H. Phillips
Keyword(s):  
Rare Earth ◽  
River Basin ◽  
Rare Earth Element ◽  
Earth Element ◽  
Powder River Basin ◽  
Critical Material ◽  
Coal Core ◽  
Powder River Basin Coal

IRON OXIDE-APATITE WASTE PILES AS UNCONVENTIONAL RARE EARTH ELEMENT RESOURCES IN THE EASTERN ADIRONDACK HIGHLANDS, NEW YORK

2019 ◽  
Author(s):  
Ryan D. Taylor ◽  
◽  
Anjana K. Shah ◽  
Gregory J. Walsh
Keyword(s):  
New York ◽  
Rare Earth ◽  
Iron Oxide ◽  
Rare Earth Element ◽  
Earth Element

DETRITAL APATITE U-PB AGES AND TRACE AND RARE EARTH ELEMENT GEOCHEMISTRY RECORD CA. 100 MA CRUSTAL THICKENING IN THE SOUTHERN ANDES

2020 ◽  
Author(s):  
Sarah George ◽  
◽  
Brian K. Horton ◽  
Julie Fosdick ◽  
Gilby Jepson ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Crustal Thickening ◽  
Element Geochemistry ◽  
Southern Andes
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