Weathering Rinds as Tools for Constraining Reaction Kinetics and Duration of Weathering at the Clast‐Scale

Sak, Peter B.

doi:10.1002/9781119563952.ch7

Cited by 2 publications

References 92 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Where Are We and Where Are We Going? Pedogenesis Through Chemical Weathering, Hydrologic Fluxes, and Bioturbation

Hunt

Egli

Faybishenko

2021

Hydrogeology, Chemical Weathering, and Soil Formation

View full text Add to dashboard Cite

A review of the status of fundamental research into soil genesis and development is given, together with a discussion of the outstanding problems from various perspectives, such as the geological, hydrological, and soil ecological points of view. The urgency of understanding what soil is, how it forms and evolves, relates fundamentally to its connection with the cycling of water and those elements of deep significance to biology, e.g. carbon, nitrogen, and phosphorus, as well as to the uptake and fate of the (mostly) solar energy input. The coupling is inherent in the close relationships between soil genesis and the formative process of chemical weathering, together with its abiotic drawdown of atmospheric carbon, as well as the relationship between soil evolution and the biological processes that change the soil. Each of these phases links soils to the atmospheric carbon composition and the Earth's climate system. More recently, the link between soil formation and Earth's water cycle has become clearer with the recognition that field weathering rates are more likely flux-limited (water, organic acids, and reaction products) than kinetics-limited. While a link between water and CO2 drawdown appears explicit in the photosynthetic reaction, the relationship between plant productivity and transpiration fundamentally links water and cycling of elements such as carbon, nitrogen, and phosphorus. The summary is intended to place the works of the present book into the context of present research efforts and future goals.

show abstract

Where Are We and Where Are We Going? Pedogenesis Through Chemical Weathering, Hydrologic Fluxes, and Bioturbation

Hunt

Egli

Faybishenko

2021

Hydrogeology, Chemical Weathering, and Soil Formation

View full text Add to dashboard Cite

show abstract

Non-linear hydrologic organization

Hunt

Faybishenko

Ghanbarian

2021

Nonlin. Processes Geophys.

View full text Add to dashboard Cite

Abstract. We revisit three variants of the well-known Stommel diagrams that have been used to summarize knowledge of characteristic scales in time and space of some important hydrologic phenomena and modified these diagrams focusing on spatiotemporal scaling analyses of the underlying hydrologic processes. In the present paper we focus on soil formation, vegetation growth, and drainage network organization. We use existing scaling relationships for vegetation growth and soil formation, both of which refer to the same fundamental length and timescales defining flow rates at the pore scale but different powers of the power law relating time and space. The principle of a hierarchical organization of optimal subsurface flow paths could underlie both root lateral spread (RLS) of vegetation and drainage basin organization. To assess the applicability of scaling, and to extend the Stommel diagrams, data for soil depth, vegetation root lateral spread, and drainage basin length have been accessed. The new data considered here include timescales out to 150 Myr that correspond to depths of up to 240 m and horizontal length scales up to 6400 km and probe the limits of drainage basin development in time, depth, and horizontal extent.

show abstract

Weathering Rinds as Tools for Constraining Reaction Kinetics and Duration of Weathering at the Clast‐Scale

Cited by 2 publications

References 92 publications

Where Are We and Where Are We Going? Pedogenesis Through Chemical Weathering, Hydrologic Fluxes, and Bioturbation

Where Are We and Where Are We Going? Pedogenesis Through Chemical Weathering, Hydrologic Fluxes, and Bioturbation

Non-linear hydrologic organization

Contact Info

Product

Resources

About