Karst landform development along the Cumberland Plateau escarpment of Tennessee

Crawford, Nicholas C.

doi:10.4324/9781003028833-13

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These can interact with near horizon tal features such as bedding to produce the complicated karst development. Crawford gives an excellent explanation of the development of interconnected caves in the Cumberland Plateau and Eastern Highland Rim that shows how vertical features interact with near horizontal bed ding to develop multi-level caves (Crawford, 1984). Waltham and Fookes show how this com plexity can develop over time from "Juvenile" to "Complex karst" (Waltham & Fookes, 2003).…”

Section: Introductionmentioning

confidence: 99%

The Evolution of Geotech - 25 Years of Innovation

Hammah¹,

Yacoub²,

McQuillan³

et al. 2021

View full text Add to dashboard Cite

I have been teaching and researching rock engineering and practicing as a consultant since 1972. I have spent most of that time in underground mining. I have seen significant changes, both evolutionary and radical, in the sector. In this paper, I reflect on some of these changes in mining geomechanical practice. I will also comment on some of the positive and occasionally less positive impacts of these changes. One constant throughout my career is that geomechanical designs will always be fraught with uncertainty. As a result, we will discuss geomechanical design as being, in its essence, a risk management exercise. I will argue that, as impressive as modern numerical analysis techniques are, they do not on their own mitigate design risk; under worst-case scenarios, they make things worse. Empirical and simple models must be used as a check. The paper intends to provoke healthy skepticism in geomechanics practitioners, designers and managers regarding all the aspects of the geomechanical analysis and design process. A failure to recognize the risks in these processes can have catastrophic effects.

show abstract

Section: Introductionmentioning

confidence: 99%

The Evolution of Geotech - 25 Years of Innovation

Hammah¹,

Yacoub²,

McQuillan³

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Earlier work has found that runoff events that exceed certain thresholds can produce a significant flux of particulate carbonate at karst springs [9]. In certain rare flood events, some karst systems have been observed to move massive amounts of sediment as bed load or subsurface debris flows [11,12]. The objectives of this study were to quantify the total inorganic carbon flux (dissolved, suspended, and bed loads) from a karstic basin and to assess the importance of the component (dissolved, suspended, and bed) loads to the total.…”

Section: Introductionmentioning

confidence: 99%

Flux of Inorganic Carbon as Dissolved, Suspended, and Bed Loads through a Karstic Basin

Paylor

Wicks

2019

Water

View full text Add to dashboard Cite

Most studies of carbonate bedrock weathering have focused on the dissolved inorganic carbon (DIC) flux while dismissing particulate inorganic carbon (PIC) as insignificant. However, under certain flow conditions PIC flux may be an important term in carbonate weathering. In this study, the total inorganic carbon (TIC) flux was calculated in a fluviokarst basin. Water samples and in situ data loggers were used to determine suspended sediment concentration and water chemistry. The mass of PIC within suspended sediments was quantified by cation/anion analysis of dual filtered/unfiltered samples. The flux of bed load material was calculated via stream power calculations. The analysis of recorded storm events indicated that PIC flux is moderate but can be significant during peak storm discharges. A small storm with a 0.87-month return period produced a PIC flux of 14 g s−1 and a DIC flux of 150 g s−1 at 1.4 m3 s−1 discharge. The largest storm had a return period of 7.7 months, a peak discharge of 4.6 m3 s−1, and peak PIC flux of 620 g s−1 compared to a peak DIC flux of 350 g s−1. During storm events, bed load was the most significant component of the total PIC flux, exceeding the suspended load flux by an order of magnitude. When calculated on an annual basis, the data show that PIC contributes about 10 percent to total inorganic carbon removal.

show abstract

Karst landform development along the Cumberland Plateau escarpment of Tennessee

Cited by 2 publications

References 0 publications

The Evolution of Geotech - 25 Years of Innovation

The Evolution of Geotech - 25 Years of Innovation

Flux of Inorganic Carbon as Dissolved, Suspended, and Bed Loads through a Karstic Basin

Contact Info

Product

Resources

About