The dolomite problem; control of precipitation kinetics by temperature and saturation state

  title={The dolomite problem; control of precipitation kinetics by temperature and saturation state},
  author={Rolf S. Arvidson and Fred T. Mackenzie},
  journal={American Journal of Science},
The mineral dolomite and the uncertainties surrounding its origin have attracted the attention of earth scientists for over a century. The core of the dolomite ‘‘problem’’ is the apparent paradox posed by the paucity of dolomite in modern marine depositional environments versus its relative abundance in the sedimentary rock record. Solving this problem requires knowledge of the conditions under which the mineral forms and the rate of precipitation under those conditions. As a working hypothesis… 

Sedimentary dolomite: a reality check

Abstract The failure to precipitate dolomite experimentally at low temperatures or from seawater in which it is both supersaturated and the most thermodynamically favoured carbonate phase, together

Breakdown of the Ostwald Step Rule--The Precipitation of Calcite and Dolomite from Seawater at 25 and 40 o C

The scarcity of recent dolomite contrasts strongly with its common abundance in ancient sedimentary rocks, leading to the paradox commonly referred to as the "dolomite problem". Despite many

A New Model for Formation of Lacustrine Primary Dolomite by Subaqueous Hydrothermal Venting

Almost 230 years after it was first described, formation of the mineral dolomite remains enigmatic. Dolomitic rocks are abundant throughout the geological record, and most are thought to form by

Surface chemistry allows for abiotic precipitation of dolomite at low temperature

Results indicate that natural surfaces, including organic matter and microbial biomass, possessing a high density of carboxyl groups may be a mechanism by which ordered dolomite nuclei form, and suggest that sharp biogeochemical interfaces that promote microbial death, as well as those with high salinity may, in part, control car boxyl-group density on organic carbon surfaces.

Concepts and models of dolomitization: a critical reappraisal

  • H. Machel
  • Geology
    Geological Society, London, Special Publications
  • 2004
Abstract Despite intensive research over more than 200 years, the origin of dolomite, the mineral and the rock, remains subject to considerable controversy. This is partly because some of the

Pedogenic origin of dolomite in a basaltic weathering profile, Kohala peninsula, Hawaii

We document stoichiometric dolomite occurring in a nonsaline Quaternary soil on the Kohala peninsula, northwestern Hawaii. Geologic constraints and geochemical and isotopic data confirm that this

Transport-controlled hydrothermal replacement of calcite by Mg-carbonates

Dolomitization is one of the most important diagenetic processes, but the reaction rate and time scale of dolomitization remain a topic of controversy. We conducted experiments in which the reaction



Tentative kinetic model for dolomite precipitation rate and its application to dolomite distribution

The ‘dolomite problem’ has a long history and remains one of the most intensely studied and debated topics in geology. Major amounts of dolomite are not directly forming today from seawater. This

Aspects of carbonate sedimentation

Abstract A dolomitic sediment of grain size too small to permit optical determination of the minerals is forming today in many shallow water lagoons and at the closed shallow end of the Coorong in

Mg/Ca Ratio and Salinity; Two Controls over Crystallization of Dolomite

Carbonate precipitation is governed by both thermodynamic and kinetic considerations. The concentration and ionic composition of natural solutions influence not only the mineralogy of the

The Dorag Dolomitization Model--Application to the Middle Ordovician of Wisconsin

ABSTRACT Most current models of dolomitization are incapable of explaining the genesis of dolostones that lack evidence of supratidal origin and are not associated with evaporites. These models

Dolomite formation in anoxic sediments of Kau Bay, Indonesia

Authigenic dolomite layers occur in the organic matter-rich sediments of Kau Bay, Indonesia. Dolomite formation is related to the anaerobic decomposition of organic matter which causes depletion of

A Preliminary Report on Magnesium Carbonate Formation in Glacial Lake Bonneville

A thin bed of unconsolidated dolomite occurs about a foot below the surface of the Great Salt Lake Desert west of Knolls, Utah. A $$C^{14}$$ date correlates with the onset of a drier climate and the

Holocene meteoric dolomitization of Pleistocene limestones, North Jamaica

  • L. Land
  • Geology, Environmental Science
  • 1973
Wholesale removal of the unstable carbonate phases aragonite and Mg-calcite, and precipitation of calcite and dolomite is currently taking place where phreatic waters (the modern water table) invade

Holocene shallow-subtidal dolomitization by near-normal seawater, northern Belize

Calcic dolomite cements compose an average of 5% of the upper 4.3 m of subtidal deposits 18 O (+2‰) compositions of the high-Sr dolomites (mean October 1900 ppm), together with near-normal salinity

Energetics of calcium-rich dolomite