Archaeological and Anthropological Applications of Isotopic and Elemental Geochemistry

2011 ◽  
pp. 238-253
Author(s):  
Henry P. Schwarcz
Keyword(s):  
Elemental Geochemistry

The effect of riparian restoration on channel complexity and soil nutrients

2017 ◽  
Vol 68 (11) ◽  
pp. 2041 ◽  
Author(s):  
J. Patrick Laceby ◽  
Nina E. Saxton ◽  
Kate Smolders ◽  
Justine Kemp ◽  
Stephen J. Faggotter ◽  
...  
Keyword(s):  
Soil Nutrients ◽  
Riparian Vegetation ◽  
Soil Nutrient ◽  
Nutrient Retention ◽  
River Channel ◽  
Channel Width ◽  
Riparian Restoration ◽  
Nitrogen And Phosphorus ◽  
Elemental Geochemistry ◽  
Channel Complexity

Restoration of riparian vegetation may reduce nutrient and sediment contamination of waterways while potentially enhancing stream channel complexity. Accordingly, the present study used a paired-site approach to investigate the effects of mature regrowth riparian vegetation on river channel morphology and soil nutrients (i.e. nitrogen and phosphorus), comparing four sites of degraded (pasture) and reforested reaches. A revised rapid assessment of riparian condition (RARC) was used to validate the site pairings. Riparian soil nutrient and elemental geochemistry were compared between paired sites, along with two parameters of channel width complexity and two for channel slope complexity. The RARC analysis confirmed the validity of the paired site design. The elemental geochemistry results indicated that underlying geology may affect the paired site analyses. Reaches with mature regrowth vegetation had greater channel width complexity but no difference in their riverbed slope complexity. In addition, degraded reaches had higher soil nutrient (i.e. nitrogen and phosphorus) concentrations, potentially indicative of the greater nutrient retention of pasture grass sites compared with mature regrowth forested reaches with less ground cover. Overall, the present study indicates that restoring mature regrowth riparian vegetation may increase river channel width complexity, although it may require canopy management to optimise the nutrient retention potential necessary to maximise the effect of riparian restoration strategies on freshwater environments.

Source fingerprinting loess deposits in Central Asia using elemental geochemistry with Bayesian and GLUE models

CATENA ◽  
2020 ◽  
Vol 194 ◽  
pp. 104808 ◽  
Author(s):  
Yue Li ◽  
Hamid Gholami ◽  
Yougui Song ◽  
Aboalhasan Fathabadi ◽  
Hossein Malakooti ◽  
...  
Keyword(s):  
Central Asia ◽  
Elemental Geochemistry ◽  
Loess Deposits

A late Holocene record of human impacts on tropical environments from non-pollen palynomorphs, Albertine Rift, western Uganda

2019 ◽  
Vol 93 ◽  
pp. 172-186 ◽  
Author(s):  
Lawrence M. Kiage ◽  
Meghan Howey ◽  
Joel Hartter ◽  
Michael Palace
Keyword(s):  
Environmental Change ◽  
Human Impacts ◽  
Forest Disturbance ◽  
Fungal Spores ◽  
Fungal Spore ◽  
African Region ◽  
Albertine Rift ◽  
Elemental Geochemistry ◽  
Tropical Environments ◽  
Western Uganda

AbstractNon-pollen palynomorphs and elemental geochemistry data from Lake Kifuruka in western Uganda provide evidence of environmental change in the tropical African region since the beginning of the Holocene. The multi-proxy record presented here shows that dry conditions dominated the end of the Pleistocene evidenced by calcium enriched sediments and suppressed fungal taxa activity. Moist conditions dominated the early Holocene and persisted until just after 1960 cal yr BP. Elevated frequencies of individual fungal spore taxa associated with herbivory and soil erosion, including Sordaria-type, Sporormiella-type, Chaetomium-type, and Glomus-type, about 4300 cal yr BP suggests a significant environmental change that could be linked to human activities. A convergence of multiple proxy data, including microscopic charcoal, elemental geochemistry, and fungal spores, strongly support the occurrence of anthropogenic forest disturbance in the Albertine Rift about 4300 cal yr BP.

scholarly journals Elemental geochemistry and Nd isotope constraints on the provenance of the basal siliciclastic succession of the middle Paleoproterozoic Francevillian Group, Gabon

2020 ◽  
Vol 348 ◽  
pp. 105874
Author(s):  
Olabode M. Bankole ◽  
Abderrazak El Albani ◽  
Alain Meunier ◽  
Marc Poujol ◽  
Andrey Bekker
Keyword(s):  
Nd Isotope ◽  
Elemental Geochemistry

Geochemical Characteristics of Ore-Bearing Strata of Pb-Zn Deposits in the Sichuan-Yunnan-Guizhou Border Area in Southwest China

2013 ◽  
Vol 868 ◽  
pp. 113-116
Author(s):  
Long Jian ◽  
Fu Ju Jia ◽  
Yan Dao
Keyword(s):  
Comparative Study ◽  
Southwest China ◽  
Geochemical Characteristics ◽  
Border Area ◽  
Zinc Deposit ◽  
Element Abundances ◽  
Elemental Geochemistry ◽  
Different Ages ◽  
Lead Zinc ◽  
The Comparative Study

The Pb-Zn deposits (or points) with different ages of ore-bearing strata are counted in in the paper. Through discussing the lithology and elemental geochemistry in ore-bearing strata to explain the lead element and zinc element relate to strata and lithology, the author suggested the lead-zinc deposit mainly were exposed in specific stratum, considering the deposits was obviously was controlled by stratum and was greatly influenced by lithology. For this reason, combining with the comparative study of element abundances in rock, it has maily demonstrated the relevance of ore-forming elements.

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