Boron isotopic composition of Paleozoic brachiopod and coeval coral calcites in Yunnan-Guizhou Plateau, China

Ma, Yunqi; He, Maoyong; Xiao, Jun; Shen, Qing; Jiang, Shengxiang

doi:10.1007/s11430-011-4263-5

Cited by 10 publications

(8 citation statements)

References 58 publications

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“…Then, the anion resin was leached with a saturated NaHCO 3 solution. Finally, the column was washed with DI water to achieve a neutral pH prior to the next use (see also [55]). …”

Section: Methodsmentioning

confidence: 99%

Origin of Boron and Brine Evolution in Saline Springs in the Nangqen Basin, Southern Tibetan Plateau

Han

Hussain

et al. 2018

Geofluids

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The Nangqen Basin is a typical shearing-extensional basin situated in the hinterland of the Tibetan Plateau. It contains abundant saline spring resources and abnormal trace element enrichments. The hydrochemical molar ratios (Na/Cl, B/Cl, and Br/Cl), H-O isotopes, and B isotopes of the saline spring were systematically measured to describe the evolution of brines and the origin of the boron. The sodium chloride coefficient of the water samples in this area is around 1.0 or slightly greater, which is characteristic of leached brines; the highest B/Cl value is 4.25 (greater than that of seawater). The Na/Cl, B/Cl, and Br/Cl values of the springs are clear indicators of a crustal origin. The18 O values of the spring waters range from −12.88‰ to −16.05‰, and the D values range from −100.91‰ to −132.98‰. Meanwhile the B content and B isotopes in the saline springs are in the ranges of 1.00 to 575.56 ppm and +3.55‰ to +29.59‰, respectively. It has been proven that the saline springs in the Nangqen Basin are a type of leached brine, suggesting that the saline springs have a terrestrial origin. The 11 B-B characteristics of the springs are similar to those observed in the Tibetan geothermal area, indicating that these two places have the same B source. Moreover, they have a crustal origin (marine carbonate rocks and volcanic rocks) instead of a deep mantle source.

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“…Then, the anion resin was leached with a saturated NaHCO 3 solution. Finally, the column was washed with DI water to achieve a neutral pH prior to the next use (see also [55]). …”

Section: Methodsmentioning

confidence: 99%

Origin of Boron and Brine Evolution in Saline Springs in the Nangqen Basin, Southern Tibetan Plateau

Han

Hussain

et al. 2018

Geofluids

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“…A series of authors (L ecuyer et al, 2002;Joachimski et al, 2005;Ma et al, 2011) analysed boron isotopes of brachiopods to test the potential of this isotope system as a palaeo-pH proxy (Fig. 18).…”

Section: Lithium To Calcium Ratios and Boron Isotopesmentioning

confidence: 99%

“…Note the depleted boron isotope ratios in fossil relative to recent brachiopods. Modified from Ma et al (2011). between seawater temperature and D 47 signatures was reported for bivalves and brachiopods. Recently, geochemical proxies were combined with petrographic ones with specific focus on the level of control exerted by bivalves on the ultrastructure of calcitic exoskeletons.…”

Section: Synopsis: Non-traditional Proxiesmentioning

confidence: 99%

“…Frequently employed geochemical proxies of these carbonate archives include conventional light stable isotope values such as δ 13 C (McConnaughey & Gillikin, ), δ 18 O (Jones & Quitmyer, ) or δ 34 S (Dando et al ., ), radiogenic isotope ratios such as 87 Sr/ 86 Sr (McArthur, ) or main and trace elemental abundances, notably Ca, Mg, Sr, Mn, N, Li, S or Fe or element to calcium ratios [for example, Mg/Ca, Sr/Ca, Ba/Ca, Li/Ca, B/Ca or rare earth elements (REE); Whittaker & Kyser, ; Klein et al ., ; Westermark et al ., ; Freitas et al ., ; Armendáriz et al ., ; Thébault et al ., ; Bau et al ., ; Azmy et al ., ; McCoy et al ., ; Yan et al ., ]. Recently, non‐traditional isotope systems and approaches including δ 44/40 Ca (Immenhauser et al ., ; Böhm et al ., ; Farkaš et al ., ,b; Heinemann et al ., ; Hippler et al ., ), δ 26 Mg (Hippler et al ., ; Planchon et al ., ), δ 137/134 Ba (Lea & Martin, ), 11 B/ 10 B (Vengosh et al ., ; Ma et al ., ), δ 88/86 Sr (Ruggeberg et al ., ), clumped isotopes of CO 2 (Δ 47 ) (Keating‐Bitonti et al ., ; Came et al ., ) or organic proxies such as TEX86 (Mutterlose et al ., ) have been explored. Relevant palaeo‐environmental parameters include pCO 2 , past seawater chemistry, temperature, salinity, pH, alkalinity, weathering patterns and runoff, palaeo‐nutrient levels or information on elemental cycles.…”

Section: Introductionmentioning

confidence: 99%

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Mollusc and brachiopod skeletal hard parts: Intricate archives of their marine environment

Immenhauser

Schöne²,

Hoffmann

et al. 2015

Sedimentology

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The biogenic carbonate hard parts of fossil bivalves, cephalopods and brachiopods are among the most widely exploited marine archives of Phanerozoic environmental and climate dynamics research. The advent of novel analytical tools has led many workers to explore non-traditional geochemical and petrographic proxies, and work performed in neighbouring disciplines sheds light on the complex biomineralization strategies applied by these organisms. These considerations form a strong motivation to review the potential and problems related to the compilation and interpretation of proxy data from bivalve, cephalopod and brachiopod hard parts from the viewpoint of the sedimentologist and palaeoceanographer. Specific focus is on the complex biomineralization pathways of a given dissolved ion or food particle from its aquatic environment via the digestion and biomineralization apparatus in molluscs and brachiopods and its incorporation into a biomineral. Given that molluscs and brachiopods do not secrete their hard parts from seawater but rather from their mantle and periostracum, this paper evaluates differences and similarities of seawater versus that of body fluids. Cephalopods, bivalves and brachiopods exert a strong biological control on biomineralization that, to some degree, may buffer their shell geochemistry against secular changes in seawater chemistry. Disordered (amorphous) calcium carbonate precursor phases, later transformed to crystalline biominerals, may be significant in carbonate archive research due to expected geochemical offset relative to the direct precipitation of stable phases. A reasonable level of understanding of the related mechanisms is thus crucial for those who use these skeletal hard parts as archives of the palaeo-environment. The impact of what is commonly referred to as 'biological factors' on the geochemistry of mollusc and brachiopod hard parts is explored for conventional isotope systems such as carbon, oxygen, strontium and traditionally used element to calcium ratios. In particular, the often used d STATE OF THE SCIENCE the architecture of mollusc and brachiopod hard parts and their ultra-structures must guide sampling strategies for geochemical analyses. Where feasible, a detailed understanding of the diagenetic pathways and the application of multi-proxy and multi-archive approaches should form the foundation of fossil carbonate archive research. The uncritical compilation of large data sets from various carbonate-shelled organisms collected at different locations is not encouraged.

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“…Plant samples were washed repeatedly with deionized water to remove any matters adhered to the surface, and then dried in a stream of air at 50 C. The dried samples were powdered to 100-200 mesh. Plant samples were digested with nitric acid solution and then isolated from the solution by two chromatographic steps (Wang et al 2002;Ma et al 2011). Boron was extracted using a modification of the method developed by Wang et al (2002).…”

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confidence: 99%

Determination of Boron Using Headspace Liquid Phase Micro-Sublimation Coupled with Inductively Coupled Plasma Optical Emission Spectrometry

Sun

et al. 2013

Analytical Letters

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Trace boron in water and plant samples was preconcentrated by a novel headspace liquid phase micro-sublimation method, followed by determination by inductively coupled plasma optical emission spectroscopy. Sodium hydroxide solution was used as the absorption solvent during the preconcentration step. The type and volume of absorption solvent, absorption time and temperature, and pH of the absorption solution and sample solution were optimized for the extraction. The linear range was from 0.1 to 80 lg/mL, with a relative standard deviation of 7.4%. The limit of detection based on a signal-to-noise ratio of three was 0.008 lg/mL. Under the optimized conditions, real water samples and plant samples were analyzed. The results showed this method can be applied for the determination of boron in environmental samples.

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Boron isotopic composition of Paleozoic brachiopod and coeval coral calcites in Yunnan-Guizhou Plateau, China

Cited by 10 publications

References 58 publications

Origin of Boron and Brine Evolution in Saline Springs in the Nangqen Basin, Southern Tibetan Plateau

Origin of Boron and Brine Evolution in Saline Springs in the Nangqen Basin, Southern Tibetan Plateau

Mollusc and brachiopod skeletal hard parts: Intricate archives of their marine environment

Determination of Boron Using Headspace Liquid Phase Micro-Sublimation Coupled with Inductively Coupled Plasma Optical Emission Spectrometry

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