Microtextures on quartz and zircon grain surfaces in the Barra del Tordo and Tesoro beaches, northwestern Gulf of Mexico

Ramos-Vázquez, Mayla A.; Armstrong‐Altrin, John S.

doi:10.1007/s12517-021-07333-7

Cited by 21 publications

(3 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All the subaqueous‐generated features, like conchoidal fractures, arcuate and straight steps and grooves, are very common on the samples of the foreshore region. Chemical surface textures, such as silica globules, silica flowers and solution crevasses, are common under the silica‐saturated conditions (Armstrong‐Altrin et al, 2022; Hossain et al, 2020; Mejía‐Ledezma et al, 2020; Ramos‐Vázquez & Armstrong‐Altrin, 2021; Vos et al, 2014), when quartz grains reside on the foreshore portion of the beach. Subaqueous residence time, silica availability and intermediate weathering and diagenesis of quartz grains affect chemical surface textures.…”

Section: Discussionmentioning

confidence: 99%

Distinguishing depositional environments in the beach–dune system of Chandipur, India, based on sediment texture and quartz grain surface features

Saha

Sinha

2023

Earth Surf Processes Landf

View full text Add to dashboard Cite

An attempt has been made to discern sedimentary environments in a tropical coastal setting in Chandipur, India, using variations in grain size. Samples were collected along one 100 m‐long cross‐shore transect extending from the tide/aqueous‐influenced seaward region to the aeolian‐dominated landward region. Various grain size data analysis approaches, like bivariate data plots and discrimination functions, were used to discriminate the sedimentary environments and establish the process of sediment deposition. The analytical results suggest that diverse granulometric parameters translate different sedimentary environments such as tidal flat, beach and dune. Additionally, the surface morphologies of quartz grains were used to understand the evolution of recent mechanical, chemical and mechanical–chemical processes in this tropical coastal region. Changes in the surficial microtextural properties of quartz grains were documented at various sites of all geomorphic units along this transect, from the tidal flat to the dune. One‐way analysis of variance (ANOVA) was used to understand the significant differences in microtextural features between these units. Subaqueous surface textures such as large conchoidal fractures, sharp edges, arcuate steps and straight and curved grooves were dominant in the grains of the tidal flat. The presence of meandering ridges, upturned plates, bulbous edges and adhering particles on quartz gradually increases as the transect ascends landward. Correlation plots between distance and microtextures, along with ANOVA, suggest that aeolian transportation modulated the surface textures. Such assessment of distinct sedimentary characteristics and transport processes may serve as a modern analogue for ancient deposits on the siliciclastic coast.

show abstract

Section: Discussionmentioning

confidence: 99%

Distinguishing depositional environments in the beach–dune system of Chandipur, India, based on sediment texture and quartz grain surface features

Saha

Sinha

2023

Earth Surf Processes Landf

View full text Add to dashboard Cite

show abstract

“…Recently, SEM-EDS is frequently used to discriminate sedimentation environments, which is considered as one of the most useful methods to differentiate heavy minerals based on their chemical composition (Hossain et al 2021). The chemical composition of heavy minerals can also help to infer the provenance of sediments (Hossain et al 2021;Ramos-Vázquez et al 2021). In this study, heavy minerals and their composition are studied to infer the provenance, weathering conditions, and environmental history of the Gulf of Guinea coastal sediments.…”

Section: Introductionmentioning

confidence: 99%

Heavy Minerals in Beach Sediments Along the Gulf of Guinea, Cameroon: Clues on Weathering Condition and Provenance

Bela,

Bessa,

Armstrong-Altrin

et al. 2024

Thalassas

Self Cite

View full text Add to dashboard Cite

A mineralogical survey was conducted in the Gulf of Guinea sands to assess the transport history, depositional environment, weathering conditions and, provenance. Heavy mineral assemblages are abundant in augite, followed by opaque minerals, diopside, zoisite, enstatite, tourmaline, zircon, rutile, sillimanite, garnet, apatite, hornblende, epidote, kyanite, chloritoid and staurolite. The variety of this minerals show that the sands studied come from the igneous source rocks, mainly from a metamorphic source, in particular the gneisses and basalts, which is consistent with the geology of the study area. The bulk mineralogy detected using XRD and the chemical properties obtained by SEM-EDS reveals that the sands were dominated by quartz. Nineteen microtextures were observed on heavy minerals like hornblende, chloritoid, sillimanite, garnet, augite and staurolite, which were subsequently classi ed as mechanical (13 features), chemical (4 features), and combined mechanical and chemical (2 features) origins. The dominance of mechanical features suggest that the grains underwent high-energy transport. The abundance of angular and subangular heavy minerals indicate distance or nearby source. The mineral composition suggests that the source rocks underwent moderate weathering. The sub-rounded and rounded heavy minerals indicate a long transport. The predominance of heavy minerals in sediments suggest that the nearby source rocks are rich in heavy minerals.

show abstract

“…Waves and currents could potentially enhance olivine reactivity via bedload transport and increased grain-grain collisions (Schuiling and De Boer, 2011;Meysman and Montserrat, 2017;Flipkens et al, 2023a). Grain abrasion during advective transport can result in the development of cracked mineral surfaces and ultimately grain fragmentation, which could increase olivine dissolution rates by enhancing the reactive mineral surface area (Oelkers et al, 2018;Madhavaraju et al, 2021;Ramos-Vázquez and Armstrong-Altrin, 2021).…”

Section: Introductionmentioning

confidence: 99%

Coastal enhanced olivine weathering for climate change mitigation: investigating the CO2 sequestration potential and ecotoxicological risks

Flipkens

View full text Add to dashboard Cite

Microtextures on quartz and zircon grain surfaces in the Barra del Tordo and Tesoro beaches, northwestern Gulf of Mexico

Cited by 21 publications

References 47 publications

Distinguishing depositional environments in the beach–dune system of Chandipur, India, based on sediment texture and quartz grain surface features

Distinguishing depositional environments in the beach–dune system of Chandipur, India, based on sediment texture and quartz grain surface features

Heavy Minerals in Beach Sediments Along the Gulf of Guinea, Cameroon: Clues on Weathering Condition and Provenance

Coastal enhanced olivine weathering for climate change mitigation: investigating the CO2 sequestration potential and ecotoxicological risks

Contact Info

Product

Resources

About