scholarly journals The Relationship Between Chemical Index of Alteration andSome Major and Trace Elements Content in Rocksof Injana Formation of Northern Iraq

2011 ◽  
Vol 11 (1) ◽  
pp. 1-22
Author(s):  
Salim. M. Al-Dabbagh ◽  
Sahra M. Othman ◽  
Hisham Y. Dhannoun
Keyword(s):  
Trace Elements ◽  
Major And Trace Elements ◽  
Northern Iraq ◽  
Chemical Index ◽  
Chemical Index Of Alteration ◽  
The Relationship

Stable isotope and chemical stratigraphy of the Eocene Tambaba Formation: correlations with the Palaeocene-Eocene Thermal Maximum event

2021 ◽  
pp. SP507-2020-35
Author(s):  
José Diego Dias Veras ◽  
João Adauto de Souza Neto ◽  
Alcides Nóbrega Sial ◽  
Valderez Pinto Ferreira ◽  
Virgínio Henrique de Miranda Lopes Neumann
Keyword(s):  
Trace Elements ◽  
Upper Cretaceous ◽  
Environmental Changes ◽  
Major And Trace Elements ◽  
Northeastern Brazil ◽  
Depositional Sequence ◽  
Thermal Maximum ◽  
Carbonate Sequence ◽  
Environmental Responses ◽  
The Relationship

AbstractThe Paraíba Basin has a well-defined carbonate depositional sequence from the Upper Cretaceous (Campanian) to the Eocene. The carbonate sequence consists of Itamaracá, Gramame, Maria Farinha and Tambaba formations, which mainly contain calcareous sandstones and carbonates with siliciclastics, limestone-marl alternations, limestones and marls, and limestones, respectively. The Tambaba Formation is composed of reef limestones, ranging from fossil- and ichnofossil-rich calcilutite to calcarenite. We investigated the rocks of this unit located on a representative geological section in the Tambaba Beach, Northeastern Brazil, in order to elucidated the environmental responses recorded in geochemical proxies (C and O isotopic composition, and distribution of major and trace elements). The δ13C and δ18O values ranged from 1.0 to 2.7‰ VPDB and from -1.3 to 1.1‰ VPDB, respectively. The interpretation of this response suggests environmental changes, such as an increase or decrease in bioproductivity from the organisms that build these reef limestones. These changes are also recorded in the behavior of the major and trace elements, for example, the relationship among SiO2, Al2O3, MgO and CaO, characterizing two different cycles during the deposition of these limestones: the first one characterized by a predominantly carbonate deposition, and the second one presenting a pulse of siliciclastic content. In addition, the palaeotemperature values (9 to 15°C, obtained by δ18O data) found together with chemostratigraphic profiles of previous studies (e.g. δ13C, CaO, MgO, SiO2, Al2O3) indicate that the reef limestones of the Tambaba Formation were probably deposited about 5 Ma after the Palaeocene-Eocene Thermal Maximum event.

scholarly journals Environmental Geochemical Assessment of Ogbagha River Sediments in Okpella Area of Edo State, Nigeria

2020 ◽  
Vol 24 (2) ◽  
pp. 335-340
Author(s):  
S.O. Obanje ◽  
S.A. Adelowo
Keyword(s):  
Source Rock ◽  
Environmental Remediation ◽  
River Sediments ◽  
Environmental Geochemistry ◽  
Major And Trace Elements ◽  
Mean Values ◽  
Chemical Index ◽  
Chemical Index Of Alteration ◽  
Edo State ◽  
Geochemical Assessment

The main aim of this paper is the environmental geochemical assessment of Ogbagha river sediments to ascertain the level of their pollution. The study area lies between latitude 7°14’N and 7°22’N and longitude 6°15’E and 6°23’E in Okpella area of Edo State, Nigeria. Major and trace elements in the six composite samples collected were analysed using Epsilon-5 x-ray fluorescence model (pAnalytical). SiO2 values range from71.4-81.61 wt. % with mean of 75.71 wt %, while Al2O3 values range from 7.01-12.97 wt. % with mean values of 11.56 wt. %.The other major oxides are below 7.00 wt. %. SiO2 and Al2O3 wt. % values are indicative of felsic source rock. The mean concentration values of Zr (1,830.55 ppm), Ba (1,416.00 ppm) and Cu (77.17 ppm) are higher than their crustal baseline values. Conversely, Sr (295.00 ppm), In (106.00 ppm), As (14.83 ppm), Cr (8.53 ppm), Co (7.00 ppm), Pb (13.33 ppm) have lower average concentrations than their crustal baseline average concentrations. Chemical index of alteration values for the samples also pointed to felsic source rock(s). The index of geoaccumulation values of Sb, In, Zr is indicative of serious environmental geochemical concern in the study area. However, potentially toxic elements such as Cu, Cr, Co, Pb, etc. are below the pollution baseline. It is recommended that standard environmental remediation measures should be taken to mitigate the pollution impact of In, Sb and Zr in the study area. Keywords: Ogbagha-Okpella, environmental geochemistry, enrichment ratios, geoaccumulation index

XX.—The Geochemistry of some Caledonian Plutonic Rocks: A Study in the Relationship between the Major and Trace Elements of Igneous Rocks and their Minerals

1947 ◽  
Vol 61 (2) ◽  
pp. 533-575 ◽  
Author(s):  
S. R. Nockolds ◽  
R. L. Mitchell
Keyword(s):  
Trace Elements ◽  
Final Stage ◽  
Major And Trace Elements ◽  
Igneous Rocks ◽  
Rock Types ◽  
Ring Complexes ◽  
Plutonic Rocks ◽  
The Relationship

The Caledonian plutonic rocks of Western Scotland form a well-defined group, ranging from ultrabasic to acid types, which have been studied in detail by a number of petrologists. They form intrusions of varying size, usually composite and frequently, at least, having the habit of ring complexes. The rock types include peridotites and pyroxenites, gabbros, hornblendite and appinite, appinitic diorites, pyroxene-mica diorites, hornblende-biotite diorite, various hornblende-biotite grandiorites, biotite adamellite and muscovite-biotite adamellite, while the final stage is represented by numerous veins of aplite and rare pegmatites.

scholarly journals Major and trace elements redistribution in weathered claystones from the Corumbataí Formation, Paraná Sedimentary Basin, São Paulo, Brazil

2017 ◽  
Vol 47 (4) ◽  
pp. 615-632
Author(s):  
Letícia Hirata Godoy ◽  
Diego de Souza Sardinha ◽  
Maria Margarita Torres Moreno
Keyword(s):  
Sedimentary Basin ◽  
Major And Trace Elements ◽  
Sao Paulo ◽  
Raw Material ◽  
Geochemical Data ◽  
São Paulo ◽  
Chemical Index ◽  
Chemical Index Of Alteration ◽  
Paraná Sedimentary Basin ◽  
Weathering Effects

ABSTRACT: We studied 30 samples from 10 mining fronts of clayish rocks of the Corumbataí Formation, in the region of the Santa Gertrudes Ceramic Pole (São Paulo, Brazil), in order to evaluate the variation of rare earth elements (REE), mineralogy, weathering effects and provenance. The profiles show diagnostic geochemical signatures that are uniform across the Corumbataí Formation samples in the studied region and can be correlated from mine to mine, i.e.: 1) the constant MgO/K2O ratio and the variation of other oxides, which allow the identification of three main groups of samples; 2) similar groups of chemical index of weathering (CIW) and chemical index of alteration (CIA); 3) the immobile character of REE, Th, and Sc. The erosion/denudation processes were apparently the same among the studied profiles, allowing the identification of a similar weathering pattern among the mines, despite its location within the stratigraphic column. Mineralogical and geochemical data here reported suggest a dominant felsic source, but intermediate or mixed sources cannot be discarded. The chemical and mineralogical aspects observed are practically uniform along the studied profiles and mines, which allow them to be used as raw material by the industries of the Santa Gertrudes Ceramic Pole (SGCP) region.

Major and Trace Elements in the Humic Acid

2018 ◽  
Author(s):  
Zoltán Kis ◽  
Katalin Gméling ◽  
Tímea Kocsis ◽  
János Osán ◽  
Mihály András Pocsai ◽  
...  
Keyword(s):  
Trace Elements ◽  
Humic Acid ◽  
Activation Analysis ◽  
Analytical Techniques ◽  
Major And Trace Elements ◽  
Prompt Gamma Activation Analysis ◽  
Prompt Gamma ◽  
Gamma Activation ◽  
X Ray ◽  
Precise Analysis

We present precise analysis of major and trace elements of the humic acid. We used three different element analytical techniques in our investigations as prompt-gamma activation analysis (PGAA), neutron activation analysis (NAA) and X-ray fluorescence (XRF) analysis was carried out. We identified 42 elements in our sample.

PROVENANCE, TEXTURE, AND RELATIVE AGE CONTROLS ON THE CHEMICAL INDEX OF ALTERATION (CIA) IN PLEISTOCENE TILLS, MINNESOTA USA

2018 ◽  
Author(s):  
Chad Wittkop ◽  
◽  
Christian Piper ◽  
Julie K. Bartley ◽  
Russell Krueger ◽  
...  
Keyword(s):  
Relative Age ◽  
Chemical Index ◽  
Chemical Index Of Alteration

A review of major and trace elements in Nile River and Western Red Sea sediments: An approach of geochemistry, pollution, and associated hazards

2021 ◽  
Vol 170 ◽  
pp. 109595
Author(s):  
Wael M. Badawy ◽  
Octavian G. Duliu ◽  
Hussein El Samman ◽  
Atef El-Taher ◽  
Marina V. Frontasyeva
Keyword(s):  
Trace Elements ◽  
Red Sea ◽  
Major And Trace Elements ◽  
Nile River
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