Table 2. Beryllium Reservoir Abundances and Fluxes
 

Reservoir

Be, kg

Be, kg/yr

Be concentration

Mantle1

2 x 1017

 

 

    MORB source

 

 

0.02-0.03 ppm*

    Intraplate source

 

 

0.08-0.1 ppm*

    "Primitive mantle"

 

 

~ 0.066 ppm*

Oceans1

2.5 x 1011

 

0.2 pg/g (seawater)

River inputs2

 

4 x 104

1.2 pg/g (river water)

Aerosol inputs3

 

7-24 x 104 (?)

 

Marine hydrothermal inputs4

 

1-5 x 104

0.1-0.4 ng/g (endmember vent fluids)

Marine Sediments5

6 x 1014

 

1.5 ppm

Continents1

3 x 1016

 

1.5 ppm

Additions to ocean crust via MORB magmatism5

 

9.9 x 106

0.3 ppm (MORB)

Sediment Subduction5

 

1.5 x 106

1.5 ppm (sediments)

Additions to the continents via arc magmatism5

 

1.6 x 106

0.5 ppm (Arc basalts)

*Inverse modeling results for MORB suites (Ryan and Langmuir 1988) and inferences from Be/Nd ratios.

  1. Mass data from Press and Siever (1978)
  2. From Measures and Edmond (1983)
  3. From Brown et al. (1992)
  4. From Von Damm et al. (1985a)
  5. Mass data from Reymer and Schubert (1984)