Evaluation through Correlation and Principal Component Analyses of a Delta Origin for the Hawthorne and Citronelle Sediments of Peninsular Florida

Pirkle, Fredric L.; Pirkle, E. C.; Pirkle, William A.; Dicks, Steven E.

doi:10.1086/628968

Cited by 8 publications

(4 citation statements)

References 2 publications

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“…PCA has also been recently used to characterize particle size data, including studies of soil fertility (Chen and Duan, 2009) and pollution (Sielaff and Einax, 2007). Most related to our research, Pirkle et al (1985) performed a PCA of textural and other sedimentological data to differentiate between marine and terrestrial sediments in Florida; Using grain size data, components were analyzed to help identify mode of transport and availability of source material (Pirkle et al, 1985); thus, interpretation of PCA components can help identify depositional environments. We are not aware of any applications of PCA in paleoenvironmental geomorphic research.…”

Section: Background: Use Of Pca In the Geosciencesmentioning

confidence: 99%

“…We believe that such data can be useful for the discrimination and mapping of these loess deposits and their sources, e.g., Pirkle et al (1985). Our goal is not to present finished, detailed maps of these loess sheets, but to explore the utility of statistical analysis methods, particularly the use of principal components analysis (PCA) and spatial interpolation, in understanding the character, distributions and origins of loess in Wisconsin and Upper Michigan.…”

Section: Introductionmentioning

confidence: 99%

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Using PCA to characterize and differentiate loess deposits in Wisconsin and Upper Michigan, USA

Scull

Schaetzl

2011

Geomorphology

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Section: Background: Use Of Pca In the Geosciencesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using PCA to characterize and differentiate loess deposits in Wisconsin and Upper Michigan, USA

Scull

Schaetzl

2011

Geomorphology

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“…In addition, the percent of the 3½ to 4½ heavy mineral fraction consisting of specific heavy minerals (ilmenite, leucoxene, epidote, garnet, and hornblende) is analyzed. These five minerals may reflect postdepositional weathering and selective sorting or reworking (Pirkle et al, 1985).…”

Section: Variables Analyzedmentioning

confidence: 99%

Altama heavy mineral deposits in southeastern Georgia

Pirkle¹,

Pirkle²,

Pirkle³

et al. 1989

Economic Geology

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The Altama heavy mineral deposits are present just north of Brunswick, Georgia, in northsouth-trending dune ridges of quartz sand that accumulated along a Pamlico shoreline in Pleistocene time. Most of the heavy minerals occur in very thin stringers disseminated throughout the dune sands, not as thick ribbons of black concentrates so characteristic of some storm line deposits. Principal component analysis reveals that ilmenite has an inverse relationship to lighter epidote, hornblende, and garnet. In addition, the analysis shows a strong positive relationship between the total heavy mineral content and the 3.5-to 4-4• sand fraction. These relationships are considered to reflect sorting, reworking, and winnowing.The principal component analysis of the Altama sediments was compared to principal component analyses of essentially similar size sediments of dune ridges along present-day barrier islands of the northeastern Florida coast. As in the case of the Altama ridges, ilmenite in the more modern ridges has an inverse relationship to the lighter heavy minerals and the total heavy mineral content shows a strong positive relationship to the very fine sands. These similarities in statistical patterns lend strength to the interpretation of the Altama heavy mineral deposits as dune ridges developed along an ancient shoreline.

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“…Additionally, standard guaranteed ranges are given as follows: ZrO 2 +HfO 2 : minimum 65%, Fe 2 O 3 : maximum range from as low as 0.04 to 0.25%, TiO 2 : maximum range from 0.10 to 0.30% [10,17]. A high percentage of zircon implies that the mineral has a high ZrO 2 content [18]. For zircon to be used efficiently, interfering impurities or contaminants must be removed because they can affect performance, reduce its value, and limit its industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Zirconia Enrichment of Zircon from Arikya, Nasarawa State, Nigeria, by Magnetic and Gravity Separation Processes for Use as Reinforcing Agent in Composite Formulation

Okoli,

Agboola,

Onwualu

et al. 2024

Eng

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Acceptable zircon for composite formulation in the aerospace industry requires that the mineral contains a minimum of 65% zirconia (ZrO2). Despite having vast deposits of zircon, Nigeria’s aerospace industry has historically relied primarily on imported mild steel tubes for solid rocket motor cases (SRMCs) construction, resulting in three major challenges: low strength-to-weight ratio, pressure, and temperature containment. In this study, the Arikya zircon deposit located in northern Nigeria was investigated with the aim of upgrading low-grade zircon ore using magnetic and gravity separation processes for use in composite formulation for SRMCs. The dry high-intensity magnetic separator (DHIMS) produced a ZrO2 grade of 52.48%, recovery of 57.99%, and an enrichment ratio of 0.78 with a separation efficiency of 0.56, while the air-floating separator (AFS) generated the highest of 65.52% ZrO2 grade with 70.81% recovery and enrichment ratio of 1.25 with a separation efficiency of 0.25. The ZrO2 content increased from 40.77 to 65.52% after beneficiation. Iron oxide and titanium dioxide contaminants at 0.73 and 0.83% were reduced to 0.66 and 0.54%, respectively, while the specific gravity increased from 4.4 to 4.6 g/cm3. The ZrO2 content and specific gravity were improved to the minimum standard specified for zirconia-reinforced composite application and competed effectively with industrially/globally accepted zircon. These results demonstrated the efficacy of combining DHIMS and AFS to upgrade the low-grade zircon ore from Arikya, Nasarawa State.

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Evaluation through Correlation and Principal Component Analyses of a Delta Origin for the Hawthorne and Citronelle Sediments of Peninsular Florida

Cited by 8 publications

References 2 publications

Using PCA to characterize and differentiate loess deposits in Wisconsin and Upper Michigan, USA

Using PCA to characterize and differentiate loess deposits in Wisconsin and Upper Michigan, USA

Altama heavy mineral deposits in southeastern Georgia

Zirconia Enrichment of Zircon from Arikya, Nasarawa State, Nigeria, by Magnetic and Gravity Separation Processes for Use as Reinforcing Agent in Composite Formulation

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