Unfortunately this page does not have a mobile or narrow screen view. Please switch to a desktop computer or increase the size of your browser. For tablets try flipping the screen.

Metadata Files

Data Publication

Denudation and weathering rates of carbonate landscapes from meteoric 10Be/9Be ratios

Wittmann, Hella | Bouchez, Julien | Calmels, Damien | Gaillardet, Jerome | Frick, Daniel | Stroncik, Nicole | ASTER Team | von Blanckenburg, Friedhelm

GFZ Data Services

(2024)

Descriptions

We provide sample information and geochemical data for obtaining erosion, weathering, and denudation rates from a framework based cosmogenic meteoric 10Be versus stable 9Be (10Be/9Be) ratios. We modified this published silicate framework (von Blanckenburg et al., 2012) to carbonate landscapes, and performed thorough ground-truthing and testing of assumptions, as this is the first application of the framework for carbonate lithologies. The most important methodological findings are as follows: 1) We amended a sequential extraction step specific for solubilizing total carbonate-bound Be using acetic acid. As this extraction cannot distinguish between secondary and primary carbonate, we employed carbon stable isotopes to obtain the fraction of Be associated with secondary carbonate. We find that >90% of total carbonate-bound Be is bound to secondary carbonate, meaning that distinguishing between secondary and primary carbonate and employing carbon stable isotopes may not be necessary. 2) Using radiogenic strontium isotope ratios we found that about a third of the 9Be contained in secondary carbonate is derived from the dissolution of silicate phases, likely clastic impurities such as clays. These silicate phases also adsorb meteoric 10Be during weathering. The method is thus applicable to pure limestone as well as mixed carbonate-siliciclastic lithologies. 3) Total 9Be concentrations in bedrock are heterogeneous in the Jura, and are potentially controlled by the amount of silicate impurities contained in limestone. Yet the average 9Beparent in summed carbonate- and silicate-bound fractions (0.07 ug/g) is about 9 times lower than values from existing rock databases. In limestones studies, 9Beparent must be thus determined case-by-case on local bedrock. 4) The analysis of partition coefficients Kd for 10Be and 9Be, respectively, and very similar 10Be/9Be ratios show that dissolved Be has equilibrated between reactive (amorphous and crystalline Fe-oxides) and secondary carbonate phases. Secondary carbonate phases are thus part of the reactive Be pool in limestone settings. 5) As in previous studies in silicate lithologies 10Be and 9Be concentrations show pronounced differences between soil and sediment samples that we attribute to grain size dependence and sorting. The 10Be/9Be ratios however cover a remarkably narrow range for all samples, resulting a in narrow range in denudation rates. 6) The fraction of 9Be released by weathering and partitioned into the secondary reactive or dissolved phase serves as a Be-specific proxy for the degree of weathering. 7) The atmospheric depositional flux of 10Be estimated for the Jura mountains from concentrations of dissolved and particulate 10Be and river gauging is about 80% of estimates from independent global GCM-based distribution maps. The GCM estimates thus provide sufficient accuracy. From application of these new principles, weathering and erosion in the French Jura Mountains can be described as follows: The proportion of weathering in total denudation W/D is >0.9, due to the high purity of the limestone that almost completely dissolved except for a small silicate mineral fraction that, however, carries 50% of the bedrock’s 9Be. Resulting 10Be/9Be-derived denudation rates are on average 300 t/km2/yr for soils and 580 t/km2/yr for river sediments. The soil-derived values agree well with previous estimates from gauging data despite their entirely different (decadal vs. millennial) integration time scales. That sediment-derived denudation rates exceed those from soil we attribute to a 30-60% contribution from subsurface bedrock weathering. On a global scale, our data provides the first cosmogenic-based denudation rates for the precipitation (MAP) range of 1200 to 1700 mm/yr under a temperate climate and dense vegetation cover. Previous millennial-scale denudation rates from in situ-36Cl in calcite from less vegetated sites do not exceed 250 t/km2/yr in this precipitation range. With 500-600 t/km2/yr our denudation rates peak at MAP of 1200-1300 mm/yr, and then show a trend of decreasing D with increasing MAP.

Keywords


Originally assigned keywords
Meteoric 10Be; meteoric cosmogenic nuclides; 10Be/9Be; carbonate landscapes; weathering; erosion; denudation
chemical element > element of group II (alkaline earth metals) > beryllium
EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > BERYLLIUM-10 ANALYSIS
EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > LAND RECORDS > ISOTOPES
EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > EROSION
EARTH SCIENCE > LAND SURFACE > GEOMORPHOLOGY > KARST LANDFORMS/PROCESSES
EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROPERTIES > ISOTOPE RATIOS
EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > KARST PROCESSES > WEATHERING

MSL enriched keywords
sedimentary rock
limestone
minerals
chemical elements
carbon
carbonate minerals
calcite
measured property
strontium
Analyzed feature
grain size and configuration
grain size

MSL enriched sub domains i

geochemistry
microscopy and tomography

Source

https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=fc57d862-bac5-11ee-967a-4ffbfe06208e

Source publisher

GFZ Data Services


DOI

10.5880/gfz.3.3.2024.001


Creators

Wittmann, Hella

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0002-1252-7059

Bouchez, Julien

Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, France

ORCID:

https://orcid.org/0000-0003-4832-1615

Calmels, Damien

Université Paris-Saclay, Laboratoire GEOPS, CNRS, Orsay, France

Gaillardet, Jerome

Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, France

ORCID:

https://orcid.org/0000-0001-7982-1159

Frick, Daniel

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0002-8530-3064

Stroncik, Nicole

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0003-4647-5928

ASTER Team

Aix-Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de l’Environnement Arbois-Méditerranée, Aix-en-Provence, France

von Blanckenburg, Friedhelm

GFZ German Research Centre for Geosciences, Potsdam, Germany | Institute of Geological Sciences, Freie Universität Berlin, Berlin, Germany

ORCID:

https://orcid.org/0000-0002-2964-717X


Contributors

Wittmann, Hella

ContactPerson

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0002-1252-7059

Bouchez, Julien

Other

Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, France

ORCID:

https://orcid.org/0000-0003-4832-1615

Calmels, Damien

Other

Université Paris-Saclay, Laboratoire GEOPS, CNRS, Orsay, France

Gaillardet, Jerome

Other

Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, France

ORCID:

https://orcid.org/0000-0001-7982-1159

Frick, Daniel

Other

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0002-8530-3064

Stroncik, Nicole

Other

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0003-4647-5928

ASTER Team

Other

Aix-Marseille Univ., CNRS, IRD, INRA, Coll France, CEREGE, Technopôle de l’Environnement Arbois-Méditerranée, Aix-en-Provence, France

von Blanckenburg, Friedhelm

Other

GFZ German Research Centre for Geosciences, Potsdam, Germany | Institute of Geological Sciences, Freie Universität Berlin, Berlin, Germany

ORCID:

https://orcid.org/0000-0002-2964-717X

HELGES – Helmholtz-Laboratory For The Geochemistry Of The Earth Surface

HostingInstitution

GFZ German Research Centre for Geosciences, Potsdam, Germany

HELGES – Cosmogenic Nuclides Sample Preparation Lab

HostingInstitution

GFZ German Research Centre for Geosciences, Potsdam, Germany

Wittmann, Hella

ContactPerson

GFZ German Research Centre for Geosciences, Potsdam, Germany

Wittmann, Hella

ContactPerson

GFZ German Research Centre for Geosciences, Potsdam, Germany


References

10.1029/2024jf007638

10.1016/j.apgeochem.2008.04.015

10.2475/02.2015.02

10.1016/j.nimb.2015.06.012

10.1016/j.jas.2017.09.005

10.1016/j.nimb.2007.11.077

10.1016/0016-7037(82)90056-4

10.1016/0016-7037(92)90142-6

10.1016/j.epsl.2012.07.022

10.17815/jlsrf-2-141

10.1016/j.quageo.2020.101075

10.1016/0016-7037(95)91550-d

10.60510/gfhwo002q

10.60510/gfhwo0000

10.60510/gfhwo000y

10.60510/gfhwo000z

10.60510/gfhwo0010

10.60510/gfhwo0011

10.60510/gfhwo0012

10.60510/gfhwo0013

10.60510/gfhwo0014

10.60510/gfhwo0015

10.60510/gfhwo0016

10.60510/gfhwo0017

10.60510/gfhwo0018

10.60510/gfhwo0019

10.60510/gfhwo001a

10.60510/gfhwo001b

10.60510/gfhwo001c

10.60510/gfhwo001d

10.60510/gfhwo001e

10.60510/gfhwo001f

10.60510/gfhwo001g

10.60510/gfhwo001h

10.60510/gfhwo001j

10.60510/gfhwo001k

10.60510/gfhwo001l

10.60510/gfhwo001m

10.60510/gfhwo001n

10.60510/gfhwo001p

10.60510/gfhwo001q

10.60510/gfhwo001r

10.60510/gfhwo001s

10.60510/gfhwo001t

10.60510/gfhwo001u

10.60510/gfhwo001v

10.60510/gfhwo001w

10.60510/gfhwo001x

10.60510/gfhwo001y

10.60510/gfhwo001z

10.60510/gfhwo0020

10.60510/gfhwo0021

10.60510/gfhwo0022

10.60510/gfhwo0023

10.60510/gfhwo0024

10.60510/gfhwo0025

10.60510/gfhwo0026

10.60510/gfhwo0027

10.60510/gfhwo0028

10.60510/gfhwo0029

10.60510/gfhwo002a

10.60510/gfhwo002b

10.60510/gfhwo002c

10.60510/gfhwo002d

10.60510/gfhwo002e

10.60510/gfhwo002f

10.60510/gfhwo002g

10.60510/gfhwo002h

10.60510/gfhwo002j

10.60510/gfhwo002k

10.60510/gfhwo002l

10.60510/gfhwo002m

10.60510/gfhwo002n

10.60510/gfhwo002p

10.60510/gfhwo002r

10.60510/gfhwo002s


Citation

Wittmann, H., Bouchez, J., Calmels, D., Gaillardet, J., Frick, D., Stroncik, N., ASTER Team, & von Blanckenburg, F. (2024). Denudation and weathering rates of carbonate landscapes from meteoric 10Be/9Be ratios [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.3.3.2024.001


Dates

Collected:

2017-06

Issued:

2024


Rights

Creative Commons Attribution 4.0 International


Spatial coordinates