Cosmogenic chlorine-36 from calcium spallation

Stone, John O.; Allan, Geoff L.; Fifield, L.K.; Cresswell, Richard

doi:10.1016/0016-7037(95)00429-7

Cited by 286 publications

(276 citation statements)

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“…A series of calibration studies have established the spallogenic and muongenic 36 Cl production system in carbonate rocks [15][16][17][18]. Accordingly the 36 Cl production rates in this study were calculated based on the chemical compositions of the carbonate rock (Tables 2 and 3), and scaled by using geographic information (latitudes and altitudes) of individual locations.…”

Section: Resultsmentioning

confidence: 99%

In-situ cosmogenic 36Cl denudation rates of carbonates in Guizhou karst area

Liu

Freeman

et al. 2013

Chin. Sci. Bull.

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This study quantifies surface denudation of carbonate rocks by the first application of in-situ cosmogenic 36 Cl in China. Concentrations of natural Cl and in-situ cosmogenic 36 Cl in bare carbonates from Guizhou karst areas were measured with isotope dilution by accelerator mass spectrometer. The Cl concentration varied from 16 to 206 ppm. The 36 Cl concentrations were in range of (0.8-2.4)10 6 atom g −1 , resulting in total denudation rates of 20-50 mm ka −1 that averaged over a 10 4 -10 5 a timescale. The 36 Cl-denudation rates showed roughly a negative correlation with the local mean temperature. This preliminary observation may suggest the variations of proportions of chemical weathering and physical erosion in denudation process, depending upon local climatic conditions. in-situ cosmogenic 36 Cl, denudation rate, climatic condition, carbonate, Guizhou Citation:Xu S, Liu C Q, Freeman S, et al. In-situ cosmogenic 36 Cl denudation rates of carbonates in Guizhou karst area.

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Section: Resultsmentioning

confidence: 99%

In-situ cosmogenic 36Cl denudation rates of carbonates in Guizhou karst area

Liu

Freeman

et al. 2013

Chin. Sci. Bull.

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“…Puerto Rico has a stable coastline (in the Quaternary); one coral was collected from the exposed last interglacial reef, which grew ϳ125,000 yr ago when sea level was ϳ6 m higher than today. Barbados is an uplifting coastline; one coral was collected from the last interglacial terrace at ϳ70 m elevation and two corals were collected from the penultimate interglacial terrace, one Nishiizumi et al (1989); 2: present work; 3: Stone et al (1996); 4: Stone et al (1998);5: Lal and Jull (1994). Gallup et al (1994).…”

Section: Samples and Methodsmentioning

confidence: 99%

“…ϳ15%-20% of the sample was then slowly dissolved using 5%-10% nitric acid in large volumes of water to remove any adsorbed Be and Al. The dried coral powder was then processed for AMS measurement of 10 Be, 26 Al and 36 Cl using standard radiochemical procedures ( 10 Be: Gu et al, 1996;26 Al: Kohl and Nishiizumi, 1992;36 Cl: Stone et al, 1996). The concentrations of 10 Be were measured at the NSF AMS Facility at the University of Arizona at Tucson; those of 26 Al and 36 Cl were measured at the Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory at Livermore.…”

Section: Samples and Methodsmentioning

confidence: 99%

“…For 10 Be and 26 Al, the scaling factors for other altitudes and latitudes can be obtained by using the scaling factors given by Lal (1991). For 36 Cl altitude scaling, especially for altitudes below sea level, one has to take into account the changes in the flux of slow muons (Stone et al, 1996(Stone et al, , 1998Heisinger et al, 2002); 36 Cl production rates can be estimated using these studies. The production rates of 10 Be, 26 Al and 36 Cl in corals at the respective latitude and altitude (Table 2) can be obtained by multiplying the nuclide production rates in Table 1 for latitudes Ն60°by factors of 0.833, 0.795, 0.804 and 0.807 for PR-3B, NU1493, NU1494 and WANC-93-1, respectively.…”

Section: Production Rates Of Useful Cosmogenic Radionuclides In Coralsmentioning

confidence: 99%

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Records of cosmogenic radionuclides 10Be, 26Al and 36Cl in corals: First studies on coral erosion rates and potential of dating very old corals

Lal

Gallup

Somayajulu

et al. 2005

Geochimica et Cosmochimica Acta

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“…The amount of sample used was selected to yield ∼ 5 mg of Cl for analysis without carrier addition. Chloride was recovered from the sample solutions by precipitation of AgCl from hot solution (Stone et al, 1996). This AgCl was redissolved in aqueous NH 3 (20-22 wt %, IQ grade, Seastar) to remove sulfur compounds of Ag.…”

Section: Geochemical Analysesmentioning

confidence: 99%

A multi-tracer approach to constraining artesian groundwater discharge into an alluvial aquifer

Iverach

Cendón

Meredith

et al. 2017

Hydrol. Earth Syst. Sci.

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Abstract. Understanding pathways of recharge to alluvial aquifers is important for maintaining sustainable access to groundwater resources. Water balance modelling is often used to proportion recharge components and guide sustainable groundwater allocations. However, it is not common practice to use hydrochemical evidence to inform and constrain these models. Here we compare geochemical versus water balance model estimates of artesian discharge into an alluvial aquifer, and demonstrate why multi-tracer geochemical analyses should be used as a critical component of water budget assessments. We selected a site in Australia where the Great Artesian Basin (GAB), the largest artesian basin in the world, discharges into the Lower Namoi Alluvium (LNA), an extensively modelled aquifer, to convey the utility of our approach. Water stable isotopes (δ 18 O and δ 2 H) and the concentrations of Na + and HCO − 3 suggest a continuum of mixing in the alluvial aquifer between the GAB (artesian component) and surface recharge, whilst isotopic tracers ( 3 H, 14 C, and 36 Cl) indicate that the alluvial groundwater is a mixture of groundwaters with residence times of < 70 years and groundwater that is potentially hundreds of thousands of years old, which is consistent with that of the GAB. In addition, Cl − concentrations provide a means to calculate a percentage estimate of the artesian contribution to the alluvial groundwater. In some locations, an artesian contribution of up to 70 % is evident from the geochemical analyses, a finding that contrasts with previous regional-scale water balance modelling estimates that attributed 22 % of all inflow for the corresponding zone within the LNA to GAB discharge. Our results show that hydrochemical investigations need to be undertaken as part of developing the conceptual framework of a catchment water balance model, as they can improve our understanding of recharge pathways and better constrain artesian discharge to an alluvial aquifer.

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Cosmogenic chlorine-36 from calcium spallation

Cited by 286 publications

References 40 publications

In-situ cosmogenic 36Cl denudation rates of carbonates in Guizhou karst area

In-situ cosmogenic 36Cl denudation rates of carbonates in Guizhou karst area

Records of cosmogenic radionuclides 10Be, 26Al and 36Cl in corals: First studies on coral erosion rates and potential of dating very old corals

A multi-tracer approach to constraining artesian groundwater discharge into an alluvial aquifer

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