Mineralogy and geochemistry of sands along the Manzanillo and El Carrizal beach areas, southern Mexico: implications for palaeoweathering, provenance and tectonic setting

Armstrong‐Altrin, John S.; Lee, Yong Il; Kasper‐Zubillaga, Juan José; Trejo-Ramírez, Elisandra

doi:10.1002/gj.2792

Cited by 139 publications

(45 citation statements)

References 105 publications

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“…This ratio > 1 indicates high chemical maturity [89]. The K 2 O/Na 2 O ratios for the studied samples range from 1.00 to 403.00, with most of them ( Table 1) higher than the PAAS (3.08) and UCC (0.87), indicating a high amount of sediment recycling.…”

Section: Sorting and Recyclingmentioning

confidence: 99%

Geochemistry of Cretaceous Mudrocks and Sandstones from Douala Sub-Basin, Kumba Area, South West Cameroon: Constraints on Provenance, Source Rock Weathering, Paleo-Oxidation Conditions and Tectonic Environment

Ngueutchoua¹,

Ngantchu²,

Youbi³

et al. 2017

IJG

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Geochemical data of fifteen Cretaceous sediment samples from Kumba area in the Douala sub-basin are presented to determine the provenance, source rock weathering, tectonic setting and paleo-oxidation conditions of the depositional setting of these rocks. For this purpose, the whole-rocks were analyzed for their major and trace element, including rare earth elements (REEs), contents by ICP-AES and ICP-MS methods respectively. On the basis of their major element composition, the rocks have been classified mainly as Fe-shale, shale, arkose and Fe-sandstone. For the provenance, the plot of Zr vs. 1.03. This is also confirmed by the values of Ni/Co (less than 7), U/Th (less than 1.25) and Cu/Zn (mostly less than 1). Tectonic discrimination diagrams (e.g., SiO 2 -K 2 O/Na 2 O and Th-Sc-Zr/10) show that these rocks were deposited mainly in an active continental margin setting, and in various tectonic environments. This reflects probably the recycling effect experienced by the samples studied.

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Section: Sorting and Recyclingmentioning

confidence: 99%

Geochemistry of Cretaceous Mudrocks and Sandstones from Douala Sub-Basin, Kumba Area, South West Cameroon: Constraints on Provenance, Source Rock Weathering, Paleo-Oxidation Conditions and Tectonic Environment

Ngueutchoua¹,

Ngantchu²,

Youbi³

et al. 2017

IJG

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“…The REE present in sediments are chiefly transported as particulate matter and reflect the chemistry of their source (Rollinson, ). The presence of heavy minerals such as zircon, monazite, and allanite may have a significant effect on REE patterns in the WGT beach site (Armstrong‐Altrin et al, ). High concentrations in REE for samples 1 to 4 are related to metamorphic and plutonic rocks, i.e., orthogneiss and the CPB.…”

Section: Discussionmentioning

confidence: 99%

“…In provenance studies, outcrops consisting of deep‐seated rocks, i.e., phaneritic plutonic (Lp) and metamorphic lithics (Lm), and supracortical rocks, i.e., volcanic (Lv) and sedimentary lithics (Ls), facilitate the interpretation of textural, petrographic, and geochemical characteristics in modern sands. However, geomorphological features along the coast, i.e., narrow and wide coastal plains, might change the patterns of grain size, composition, and geochemistry of beaches, dunes, and even sedimentary rocks (Armstrong‐Altrin, Lee, Kasper‐Zubillaga, & Trejo‐Ramírez, ; Carranza‐Edwards, ; Davis Jr., ; Folk, ; Garzanti, ; Le Pera & Critelli, ; Muhs, Lancaster, & Skipp, ; Muhs, Reynolds, Been, & Skipp, ; Nagarajan, Madhavaraju, Nagendra, Armstrong‐Altrin, & Moutte, ). Short distances generally are associated with coarse‐poorly sorted textures, immature sands, and preservation of labile minerals, while longer distances are related to fine well‐sorted sediments with quartz enrichment and depletion of labile minerals.…”

Section: Introductionmentioning

confidence: 99%

Provenance inferred through modern beach sands from the Gulf of Tehuantepec, Mexico

et al. 2018

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Different parent rocks, climate, and relief control the provenance of beach sands on the coast of Mexico. This is the first paper to address the provenance problem of beach sands in south-eastern Mexico considering a homogeneous climate and relative similarity in parental rocks but different relief. Two coastal areas are confined in this study: (a) the Western Gulf of Tehuantepec (WGT) and (b) the Eastern Gulf of Tehuantepec (EGT). The WGT beach sands are probably controlled by the denudation of orthogneisses, Eocene-Miocene basaltic-andesites-dacites-rhyolites from the Volcanic Belt of the Sierra Madre del Sur (VBSMS), and granites to diorites from the Coastal Plutonic Belt (CPB). The rocks exposed in the EGT are represented by orthogneisses and tonalite, granodiorite, and gabbro suites from the Palaeozoic-Mesozoic Chiapas Coastal Plutonic Belt (CHCPB). Quaternary andesites and dacites from the Tacaná Volcano are located in the eastern coastal area. The Chemical Index of Alteration (CIA) and Plagioclase Index of Alteration (PIA) values indicate that the less weathered beach sands are in the WGT compared to the EGT coastal area. Plagioclase transport is preserved in a narrow coastal plain that contributes to a lower a weathering rate compared to the EGT sands deposited in a wider coastal plain. Geochemical analyses show that the WGT and EGT beach sands are admixtures of felsic, intermediate, metamorphic, and volcanic sources in their sands composition. Relief seems to play a major role in the composition of beach sand in both coastlines, since parental rocks are mostly similar in composition and climate remains homogeneous along the coast.

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“…The major-element-based provenance discrimination diagram of Roser and Korsch (1988), which discriminates four major provenance types, mafic, intermediate, felsic, and recycled quartzose, has been widely used in recent studies to discriminate the provenance of clastic sediments (Armstrong-Altrin, Nagarajan, et al, 2015;Armstrong-Altrin, Lee, Kasper-Zubillaga, & Trejo-Ramírez, 2016;Tawfik et al, 2017;Zaid, Elbadry, Ramadan, & Mohamed, 2015). On this diagram, the sandstones are plotted in quartzose sedimentary and mafic igneous provenance fields (Figure 8).…”

Section: Provenancementioning

confidence: 99%

Petrography and geochemistry of the Lower Miocene Moghra sandstones, Qattara Depression, north Western Desert, Egypt

et al. 2017

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The petrographic and geochemical compositions of the Lower Miocene Moghra siliciclastic sediments in the Qattara Depression, north Western Desert, were investigated to infer their provenance, tectonic setting, palaeoweathering conditions, and diagenetic history. The Moghra Formation (~200 m thick) is dominated by sandstones intercalated with mudstone and carbonates. X‐ray diffraction analysis revealed that smectite, kaolinite, and illite are the dominant clay minerals found in mudstones. The sandstones are mainly subarkose, sublitharenite, and quartzarenite types with an average modal composition of Q89F6L5. The sandstones possess various diagenetic overprints including mechanical infiltration of clay, compaction, cementation, dissolution, and replacement. Major and trace element concentrations suggested that the parent rocks are intermediate to felsic in composition derived from the Neoproterozoic Arabian Nubian Shield. The weathering indices such as the chemical index of alteration and the plagioclase index of alteration implied that the intensity of chemical weathering in the source area was moderate under semi‐arid climatic conditions. On the other hand, the index of chemical variability indicates a low compositional maturity. The tectonic discrimination diagrams demonstrated a collision setting for the Arabian Nubian Shield, which represents the main supplier of sediments to the study area. Statistical parameters, sedimentary structures, and ichnofossil contents suggested that the Moghra sediments were deposited in a tidally‐influenced fluvial environment.

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Mineralogy and geochemistry of sands along the Manzanillo and El Carrizal beach areas, southern Mexico: implications for palaeoweathering, provenance and tectonic setting

Cited by 139 publications

References 105 publications

Geochemistry of Cretaceous Mudrocks and Sandstones from Douala Sub-Basin, Kumba Area, South West Cameroon: Constraints on Provenance, Source Rock Weathering, Paleo-Oxidation Conditions and Tectonic Environment

Geochemistry of Cretaceous Mudrocks and Sandstones from Douala Sub-Basin, Kumba Area, South West Cameroon: Constraints on Provenance, Source Rock Weathering, Paleo-Oxidation Conditions and Tectonic Environment

Provenance inferred through modern beach sands from the Gulf of Tehuantepec, Mexico

Petrography and geochemistry of the Lower Miocene Moghra sandstones, Qattara Depression, north Western Desert, Egypt

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