Interoceanic variation in the rare earth, major, and trace element depositional chemistry of chert: Perspectives gained from the DSDP and ODP record

Murray, Richard W; Brink, Marilyn R. Buchholtz ten; Gerlach, David C.; Russ, G. P.; Jones, David L.

doi:10.1016/0016-7037(92)90319-e

Cited by 139 publications

(66 citation statements)

References 28 publications

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“…This is because of the fact that the Himalayan source rivers have a high-suspended load of particles enriched in REE, making fractionation insignificant during deposition. This may be due to a greater extent of mixing of the REE and also the limited time available for preferential adsorption (Murray et al, 1992). Higher rate of transportation leads to a lesser degree of fractionation between LREE and HREE, resulting in a uniform distribution pattern (Turner et al, 1981).…”

Section: Resultsmentioning

confidence: 99%

“…Variation in Ce anomalies is influenced by a number of factors, including terrigenous input, the depositional environment and diagenetic conditions. Ce anomaly (Ce/Ce*) is quantified by the ratio of the observed value of Ce to an expected value (Ce*) obtained by the interpolation from the shale normalized value of trivalent neighbors such as La and Pr (Murray et al, 1992). The values of Ce/Ce* > 1 and <1 indicate the positive and negative anomalies respectively (Toyoda et al, 1990).…”

Section: Resultsmentioning

confidence: 99%

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Distribution of rare earth elements and heavy metals in the surficial sediments of the Himalayan river system.

et al. 2000

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Rare earth elements (REEs) are considered as useful tracers of various surface geological processes in the river system. REEs and heavy metals (V, Pb, Cr, Co, Ag, Zn, Cd, Ni) were analyzed from the suspended sediments of Ganges and surficial sediments of Yamuna, Brahmaputra, Jamuna, Padma and Meghna, using VG Thermal Ionization Mass Spectrometer. Physical weathering process seems to be a major controlling factor for the distribution of REE and trace metals in the sediments of the Himalayan rivers. Weathering of the surface crustal area in the drainage basin shows significant variations due to changes in lithology and influence of tributaries. The distribution of REE shows an almost uniform pattern due to factors such as river transportation processes and high level of terrigenous mixing in the bed sediments. The results show that finer grain size and high content of clay mineral (illite) in these sediments are possible traps for the accumulation of metals. Anthropogenic activities seem to have very little influence in controlling the elemental distribution in the Himalayan rivers.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Distribution of rare earth elements and heavy metals in the surficial sediments of the Himalayan river system.

et al. 2000

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“…The coherent and predictable behavior of REEs, along with their sensitivity to pH, redox conditions and their tendency to participate in adsorption/ desorption reactions, allows them to be used as input provenance markers, meteorization processes or geochemical tracers of changes in environmental conditions in water and sediments (Sholkovitz, 1992;Ǻstrom, 2001). REEs are useful for interpretation of diagenetic redox conditions in palaeoenvironmnental research (Shields and Stille, 2001), monitoring detrital sediment sources (Grousset et al, 1998), and elucidating seawater circulation patterns (Tachikawa et al, 1999), hydrothermal fluxes (German et al, 1999), and the historic oxygenation of the oceans (Henderson, 1984;Murray et al, 1992). They are also important tools for identifying anthropogenic effects on intertidal sediment, especially those caused by unnatural liquid or solid inputs which modify the geochemical characteristics of the sediment (Borrego et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Rare earth elements in intertidal sediments of Bohai Bay, China: Concentration, fractionation and the influence of sediment texture

Zhang

Gao

Chen

2014

Ecotoxicology and Environmental Safety

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a b s t r a c tSurface sediments from intertidal Bohai Bay were assessed using a four-step sequential extraction procedure to determine their concentrations of rare earth elements (REEs) and the chemical forms in which those elements were present. The normalized ratios La/Gd and La/Yb showed that LREE contents were not significantly higher than the middle REEs or HREE contents. A negative Ce anomaly and positive Eu were observed in sand and silty sand sediments, whereas no significant Ce or Eu anomaly was found in clayey silt sediments. Residual fraction of REEs accounted for the majority of their total concentrations. Middle REEs were more easily leached than other REEs, especially in clayey silt sediment. REEs contents in the surface sediment from the intertidal Bohai Sea were consistent with data from the upper continental crust and China shallow sea sediments, indicating that they were generally unaffected by heavily anthropogenic effects from adjacent areas.

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“…The in ten sity of weath er ing, the com po si tion of the par ent rocks and the sed i ment prov e nance of the ma te rial can be in dicated by means of chem i cal anal y sis, par tic u larly by ra tios of ma jor el e ments and by trace el e ment dis tri bu tion (Murray et al, 1992;Cullers, 2000;Price and Velbel, 2003;Mongelli et al, 2006;Prochnow et al, 2006;Ohta and Arai, 2007;Shel don and Ta bor, 2009;Galbarczyk-G¹siorowska, 2010). The spe cific distri bu tion of REE known from ter res trial de pos its and palaeosols may act as an an other in di ca tor of cli mate as well as of sed i mentary con di tions (e.g., Nesbit et al, 1990;Condie,1993;Hannigan and Sholkovitz, 2001;Haley et al, 2004;Shields and Webb, 2004;Ounis et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Latest Triassic climate humidification and kaolinite formation (Western Carpathians, Tatric Unit of the Tatra Mts)

Lintnerová¹,

Michalı́k²,

Uhlík³

et al. 2013

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The Tomanová For ma tion, of Rhaetian age, over ly ing the Norian Carpathian Keuper in the Tatra Mts. is built of cy clic parasequences of mudstones and sand stones. Quartz (15 to 70 wt.%), kaolinite (13 to 46 wt.%) and 2:1 Al dioctahedral phyllosilicates (dioct 2:1: mus co vite, illite, illite/smectite: 5 to 39 wt.%) rep re sent the ma jor min eral phase. The kaolinite/dioct 2:1 ra tio de creases up wards in the sec tion (from 4.3 to 0.5) and sig nals vari abil ity in weath er ing/ero sion in ten sity and changing wa ter sa lin ity. Ma jor and trace el e ments (LILE, HSFS, REE) in di cate a uni form source -fel sic rocks lo cated prob a bly in the Vindelician High lands. The sed i men ta tion rate (83 mm/ky) was con trolled by cli mate. Al ter na tion of dry and hu mid pe riods is refered by sed i men tary tex tures and by ma tu rity of quartz (ae olian vs. flu vial grains), and or ganic mat ter con tent and com po si tion (C org and d 13 C org ). Authigenic sid er ite or bethierine doc u ments wet and re duced con di tions in the up per part of the Tomanová For ma tion. The sedimention rate of the ma rine Dudzinec For ma tion at tained 25 mm/ka and the char ac ter of cy cles pre served in the se quence is sim i lar as that of the Tomanová For ma tion (fin ing up wards parasequences). How ever, the dif fer ent clay min er al ogy, the re cy cled char ac ter of the sil i cates, the dif fer ent d 13 C org and el e vated imput of car bon ate detri tus with spe cific C and O iso to pic pat terns doc u ment a dis con ti nu ity in the sec tion. The transgressive char ac ter of the Dudzinec Fm. was de duced from the strati graphic dis tri bu tion and en vi ron men tal char ac ter is tics of the ben thic foraminifera pres ent. Involutinids and spirillinids dom i nate in the lower part, endothyrinids gov ern the mid dle part, and in the up per part nodosariids and Ammodiscus-type micro fauna oc cur. These age-di ag nos tic microfossils in di cate a late Rhaetian age. Sea level rise in the Tatric Zone trig gered by ther mal ex pan sion of the Cen tral At lan tic Rift was grad ual, be ing af fected by in put of ter res trial clastic sed i ment both by fresh wa ter and by wind. The Tatric Tri as sic se quence in the West ern Carpathians helps un der stand ing of the de vel op ment of sed i men ta tion, palaeoclimate (kaolinite weath er ing), and palaeo ge ogra phy of the north ern most Tethyan Do main.

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Interoceanic variation in the rare earth, major, and trace element depositional chemistry of chert: Perspectives gained from the DSDP and ODP record

Cited by 139 publications

References 28 publications

Distribution of rare earth elements and heavy metals in the surficial sediments of the Himalayan river system.

Distribution of rare earth elements and heavy metals in the surficial sediments of the Himalayan river system.

Rare earth elements in intertidal sediments of Bohai Bay, China: Concentration, fractionation and the influence of sediment texture

Latest Triassic climate humidification and kaolinite formation (Western Carpathians, Tatric Unit of the Tatra Mts)

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