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Determination of carbonate and organic matter in calcareous sediments and sedimentary rocks by loss on ignition; comparison with other methods
  • W. Dean
  • Environmental Science
  • 1 March 1974
ABSTRACT A modified ignition loss method is described for determining organic and carbonate carbon in calcareous sedimentary materials using equipment found in most laboratories. The method has been
Magnitude and significance of carbon burial in lakes, reservoirs, and peatlands
Globally, lakes are currently accumulating organic carbon (OC) at an estimated annual rate of about 42 Tgṁyr −1 . Most of the OC in all but the most oligotrophic of these lakes is autochthonous,
Geochemical and climatic effects of increased marine organic carbon burial at the Cenomanian/Turonian boundary
Perhaps the most significant event in the Cretaceous record of the carbon isotope composition of carbonate1,2, other than the 1–2.5 ‰ negative shift in the carbon isotope composition of calcareous
The carbon cycle and biogeochemical dynamics in lake sediments
  • W. Dean
  • Environmental Science
  • 1 May 1999
The concentrations of organic carbon (OC) and CaCO3 in lake sediments are often inversely related. This relation occurs in surface sediments from different locations in the same lake, surface
Regional aridity in North America during the middle Holocene
Increased aridity throughout the Great Plains and Rocky Mountain region during the middle Holo cene has been documented from pollen records, aeolian proxy variables in lake cores, and active sand
Geochemical evidence for suppression of pelagic marine productivity at the Cretaceous/Tertiary boundary
The normal, biologically productive ocean is characterized by a gradient of the 13C/12C ratio from surface to deep waters. Here we present stable isotope data from planktonic and benthic
  • W. Dean
  • Environmental Science, Geography
  • 1 April 1997
Most of the sediment components that accumulated in Elk Lake, northwestern Minnesota, during the Holocene are autochthonous or biogenic, delivered to the sediment-water interface on a seasonal
Varve calibrated records of carbonate and organic carbon accumulation over the last 2000 years in the Black Sea
Sedimentologic and geochemical studies of box and gravity cores recovered from the Black Sea during the first leg of a multileg international Black Sea expedition in 1988 allow reconstruction of the