Chemical weathering of basalts and andesites; evidence from weathering rinds

1982 ◽  
Author(s):  
Steven M. Colman
Keyword(s):  
Chemical Weathering

SILICATE CHEMICAL WEATHERING BENEATH GLACIERS RECORDED BY THE COATING LAYER OF GLACIAL POLISH

2018 ◽  
Author(s):  
Terrence Blackburn ◽  
◽  
Shalev Siman-Tov ◽  
Emily E. Brodsky ◽  
Greg M. Stock ◽  
...  
Keyword(s):  
Chemical Weathering ◽  
Coating Layer

THE IMPACT OF PHYSICAL AND CHEMICAL WEATHERING ON IRON SLAG FROM STANDISH, NY

2019 ◽  
Author(s):  
Maria L. Leonard ◽  
◽  
Rachel M. Kelk ◽  
Dori J. Farthing
Keyword(s):  
Chemical Weathering ◽  
Iron Slag ◽  
Physical And Chemical ◽  
The Impact

Contribution of the chemical weathering to the CO2 consumption in a microbasin of Quadrilátero Ferrífero, Brazil

2021 ◽  
Vol 80 (17) ◽  
Author(s):  
Daniela V. Machado ◽  
Camila R. e Silva ◽  
Eduardo D. Marques ◽  
Gabriel S. de Almeida ◽  
Emmanoel V. Silva-Filho
Keyword(s):  
Chemical Weathering ◽  
Co2 Consumption ◽  
Quadrilátero Ferrífero

Detrital zircon geochronology and heavy mineral analysis as complementary provenance tools in the presence of extensive weathering, reworking and recycling: the Neogene of the southern North Sea Basin

2021 ◽  
pp. 1-13
Author(s):  
Jasper Verhaegen ◽  
Hilmar von Eynatten ◽  
István Dunkl ◽  
Gert Jan Weltje
Keyword(s):  
North Sea ◽  
Chemical Weathering ◽  
Heavy Mineral ◽  
Mineral Analysis ◽  
Provenance Analysis ◽  
Detrital Zircon Geochronology ◽  
Southern North Sea ◽  
Variable Heavy ◽  
Mineral Data ◽  
Heavy Mineral Analysis

Abstract Heavy mineral analysis is a long-standing and valuable tool for sedimentary provenance analysis. Many studies have indicated that heavy mineral data can also be significantly affected by hydraulic sorting, weathering and reworking or recycling, leading to incomplete or erroneous provenance interpretations if they are used in isolation. By combining zircon U–Pb geochronology with heavy mineral data for the southern North Sea Basin, this study shows that the classic model of sediment mixing between a northern and a southern source throughout the Neogene is more complex. In contrast to the strongly variable heavy mineral composition, the zircon U–Pb age spectra are mostly constant for the studied samples. This provides a strong indication that most zircons had an initial similar northern source, yet the sediment has undergone intense chemical weathering on top of the Brabant Massif and Ardennes in the south. This weathered sediment was later recycled into the southern North Sea Basin through local rivers and the Meuse, leading to a weathered southern heavy mineral signature and a fresh northern heavy mineral signature, yet exhibiting a constant zircon U–Pb age signature. Thus, this study highlights the necessity of combining multiple provenance proxies to correctly account for weathering, reworking and recycling.

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