clay mineral sedimentation in the ocean

Mineralogy and Sedimentation of Recent Deep-Sea Clay in the …

Semiquantitative mineral analysis has been done by X-ray diffraction on the < 2 μ- and 2–20 μ-size fractions of approximately five hundred Recent deep-sea core samples from the Atlantic, Antarctic, western Indian Oceans, and adjacent seas. Relative abundances of montmorillonite, illite, kaolinite, chlorite, gibbsite, quartz, amphibole, clinoptilolite …Web

Frontiers | Effect of flocculation on turbidity currents

2 Material and methods 2.1 Clay. Two types of clays were used for the experiments. Initial experiments were conducted by using illite since illite is one of the dominant clay minerals found of the top layer of the Clarion–Clipperton Zone (CCZ) sediment where Deep Sea Mining (DSM) is performed (ISA, 2015; Helmons et al., …Web

Distribution of rare earth elements and implication for Ce …

The Fe and Mn contents in clay-sized fraction are higher than those in bulk sediment and low P content in clay-sized fraction at site 30 and site 64 (Table S2), suggesting. Conclusions. In this study, we confirmed that clay-sized minerals in deep-sea sediments are a REY resource.Web

Clay-mineral distribution in recent deep-sea sediments around …

Clay minerals were identified by X-ray diffraction (XRD) using a Bruker D2 Phaser X-ray diffractometer at SALNCU. For clay mineral analysis, the bulk sediments …Web

Sediment pathways in the western Barents Sea inferred from …

Vogt, C. & Knies, J.; Sediment pathways in the western Barents Sea inferred from clay mineral assemblages in surface sediments. Norwegian Journal of Geology vol. 89, pp 41-55. Trondheim 2009, ISSN ...Web

Environmental controls on clay mineralogy of an Early

Clay mineralogy. The clay mineral assemblages for the Dorset Blue Lias are relatively homogeneous from the base to the top of the section. They are composed predominantly of illite (30 to 60%), random illite–smectite mixed layers (I/S, 15 to 45%) and kaolinite (10 to 30%); chlorite occurs in small quantities (5 to 15%; Fig. 2).In Somerset …Web

Clay Mineral Sedimentation in the Ocean | Semantic Scholar

Georges Millot's thesis (1949) was on the «Relationships between the nature and genesis of argillaceous sedimentary rocks». His last scientific contribution was published in early 1991 a few months before he died and was entitled «About the abundance of smectite minerals in common marine sediments deposited during high sea level stages in late Jurassic …Web

Origin and dispersal of recent clay minerals in the Yellow Sea

The clay minerals in the <2 μm fraction of 52 sediment samples from the Yellow Sea continental shelf have been determined by X-ray diffraction analysis. The results define the CYSM (central Yellow Sea mud) and the SEYSM (southern Yellow Sea mud) on the basis of clay mineral concentration and are interpreted in order to decipher the …Web

Ocean Sediments – Meaning – Classification – Types

Over wide areas in the deepest part of the ocean, clay minerals are predominant and most if this clay is terrestrial in origin. Because clay is brought by the currents, it settles everywhere in the oceans, but in certain area such as pelagic silica and carbonate sediment, the minerals dominate over clay. (see also: Endangered Seahorses)Web

Clay mineral variations in Holocene terrestrial sediments from the

Mineralogy and sedimentation of recent deep-sea clay in the Atlantic Ocean and adjacent seas and oceans. ... Clay mineral source tracing and characterisation of Burdekin River (NE Australia) and flood plume fine sediment. Journal of Soils and Sediments, Vol. 16, Issue. 2, p. 687.Web

High-resolution clay mineral assemblages in the inner shelf

The inner shelf mud wedge of the East China Sea (ECS) is a high-sedimentation-rate fine-grained sediment unit that has preserved a continuous environmental evolution history since the last deglaciation. We present a high-resolution clay mineralogical study from Core MD06-3040 to semi-quantitatively evaluate …Web

Clay mineral distribution characteristics of surface sediments in …

Clay minerals are usually considered as important indicators to identify sources in both terrigenous and marine sediments. In particular, clay minerals in …Web

Substantial iron sequestration during green-clay authigenesis

The rates of iron sequestration for the top 5 m of deep-sea sediment include the contribution of authigenic green grains (Fe Gl–S), pyrite (Fe Py), detrital clay minerals (Fe DC) and Fe-(oxyhydr ...Web

Elemental and Mineral Composition of the Barents Sea Recent …

A comprehensive examination of the elemental (including radionuclides and heavy metals), mineral, and grain-size composition of sediments from different areas of the Barents Sea was performed. Sediment cores were sampled in the Central Deep, Cambridge Strait (Franz Josef Land Archipelago), Russkaya Gavan' Bay (Novaya …Web

18.3: Sea-Floor Sediments

Iron and manganese nodules form as direct precipitates from ocean-bottom water. Figure 18.3.1 18.3. 1 The distribution of sediment types on the sea floor. Within each colored area, the type of material shown is what dominates, although other materials are also likely to be present. The distributions of some of these materials around the seas ...Web

Environmental Characteristics of Clays and Clay …

Clays and clay minerals occur under a fairly limited range of geologic conditions. The environments of formation include soil horizons, continental and marine sediments, geothermal fields, volcanic deposits, and …Web

6.12: Clastic Sedimentary Rocks

Sandstone is a sedimentary rock formed by the consolidation and compaction of sand and held together by a natural cement, such as silica, calcite, and iron-oxide minerals (Figure 6.44). Most sandstone is dominated by the minerals quartz. Figure 6.43. Sand is winnowed (sorted) and accumulates on a beach by wave action.Web

Minerals | Free Full-Text | Sediment Mineralogy and …

The Total Organic Carbon (TOC) content plays a crucial role in gas hydrate exploration because a higher TOC content signifies a greater potential for buried gas hydrates. The regulatory mechanisms governing organic matter in sediment are intricate and influenced by various predominant factors unique to different regions. Notably, the …Web

Frontiers | Are Clay Minerals the Primary Control on the Oceanic …

At all three Tasman Sea Sites clay fraction XRD reveals a consistent clay mineral assemblage comprised of kaolinite, illite, smectite and mixed-layer illite-smectite . However, two distinct sediment types can be distinguished on the basis of bulk XRD ( Supplementary Material ) and SEM-based mineral mapping ( Figure 4 ).Web

Impact of green clay authigenesis on element sequestration in

Impact of green clay authigenesis on element sequestration in marine settings | Nature Communications. Retrograde clay mineral reactions (reverse …Web

Clay minerals in recent sediments of the World Ocean and

The whole process is realized in surficial sediments and bottom waters: under conditions of intense evaporation, especially in closed water basins, the …Web

Frontiers | A review of possible mechanisms for mercury …

In water bodies. The mercury derived from the atmosphere or terrigenous debris before entering the water mass is mainly Hg (P) and Hg 2+ ions (Lin and Pehkonen, 1999).After entering a water body, particulate mercury can be directly adsorbed by porous media, such as organic matter, clay minerals and pyrite (Ravichandran, 2004; Holmes …Web

Clay Mineral Sedimentation in the Ocean | SpringerLink

This underscores the interest and energy that he deployed throughout his scientific life in order to better understand clay mineral sedimentation in the ocean in the course of the earth's geological history.Web

Clay-mineral and grain-size distributions in surface sediments of …

In this study, the grain-size and clay-mineral compositions of 73 surface sediment samples collected in a variety of environmental settings in the White Sea are …Web

Frontiers | Sediment provenances shift driven by sea level and …

Because clay minerals are embedded in fine particulate matter, they can be transported in the ocean with suspended bodies over long distances and remain unaltered before entering the sea; this aspect makes the combined characteristics of clay minerals an effective indicator for identifying material sources and tracking sediment transport ...Web

Clay mineral distribution and provenance in surface sediments of

The provenance of the Central Yellow Sea Mud (CYSM) in the Yellow Sea has been attracted a great deal of attention over the last three decades, but a consensus is not yet reached. In this study, 101 surface sediment samples collected from the CYSM were investigated to determine provenance and transport mechanisms in the area using the …Web

JMSE | Free Full-Text | Material Source of Sediments from West …

In this work, by analyzing clay mineral compositions and bulk sediment geochemistry of a gravity core (GC04) collected in the western CCZ of the Pacific Ocean, we discuss the material sources and properties of sediments in this area and compared these with sediments from the cobalt-rich crust enrichment zone in the Northwest Pacific …Web

Clay mineral distribution and provenance in Mesozoic and …

Clay mineral distribution and provenance in Mesozoic and Tertiary mudrocks of the Moray Firth and northern North Sea - Volume 25 Issue 4 ... P.E. (1965) Mineralogy and sedimentation of recent deep-sea clay in the Atlantic ocean and adjacent seas and oceans. Bull. Geol. Soc. Am., 76, 803–832. ... North Sea, UK. Clay Minerals, Vol. 29, …Web

Clay minerals and geochemistry of the bottom sediments in the

Clay minerals of 34 sediments collected from the northwestern continental shelf of the East China Sea have been determined by X-ray diffraction analysis. The clay mineral distribution is mainly controlled by the sediment source and the dominant circulation pattern. The predominant clay mineral in our study area is illite comprising more than 67% of the …Web

JMSE | Free Full-Text | The Clay Mineralogy and Geochemistry …

In this study, we analyzed the clay mineralogy and geochemistry of surface and drill core samples from the northeastern Beibu Gulf in order to unravel the sediment provenance of, and factors controlling, the sedimentary environment. The main clay mineral assemblage in the surface sediment samples included kaolinite (27–72%), smectite …Web