Seawater Chemistry and Early Carbonate Biomineralization

@article{Porter2007SeawaterCA,
  title={Seawater Chemistry and Early Carbonate Biomineralization},
  author={Susannah M. Porter},
  journal={Science},
  year={2007},
  volume={316},
  pages={1302 - 1302}
}
  • S. Porter
  • Published 1 June 2007
  • Geography, Environmental Science, Geology
  • Science
The first appearances of aragonite and calcite skeletons in 18 animal clades that independently evolved mineralization during the late Ediacaran through the Ordovician (~550 to 444 million years ago) correspond to intervals when seawater chemistry favored aragonite and calcite precipitation, respectively. Skeletal mineralogies rarely changed once skeletons evolved, despite subsequent changes in seawater chemistry. Thus, the selection of carbonate skeletal minerals appears to have been dictated… 

Seawater Chemistry, Biomineralization and the Fossil Record of Calcareous Organisms

  • P. Taylor
  • Geography, Environmental Science
  • 2008
Oscillations in seawater chemistry have characterized at least the last 600 million years of earth history. Three phases of aragonite seas have been separated by two of calcite seas, the former due

Calcite and aragonite seas and the de novo acquisition of carbonate skeletons

TLDR
The results suggest that calcite and aragonite seas do have a strong influence on carbonate skeletal mineralogy, however, this appears to be true only at the time mineralized skeletons first evolve.

Eve of biomineralization: Controls on skeletal mineralogy

Carbonate mineralogies have oscillated between aragonite and calcite seas through geological time, proposed to be due mainly to secular variation in the magnesium/calcium ratio driven by changing

Response of the Elemental Chemistry of Carbonate Phases to Secular Change in Ocean Chemistry.

  • F. Hasiuk
  • Geography, Environmental Science
  • 2008
Abstract Calcium carbonate is the dominant inorganic mineral precipitate of the global ocean and by no coincidence, it is also the most abundant mineral produced by life. Secular variation in the

The role of SO4 in the switch from calcite to aragonite seas

Throughout the Phanerozoic, the primary inorganic marine calcium carbonate mineralogy oscillated between calcite and aragonite, reflecting changes in seawater chemistry. These variations in seawater

Experimental investigation of calcium carbonate mineralogy in past and future oceans

  • P. Bots
  • Materials Science, Geology
  • 2011
Inorganic marine calcium carbonate formation and mineralogy varies significantly concurrent with the solution composition. During the Phanerozoic, due to oscillations in the seawater composition,

The long‐term impact of magnesium in seawater on foraminiferal mineralogy: Mechanism and consequences

Foraminifera are unicellular protists, primarily known for their calcium carbonate shells that provide an extensive fossil record. This record, ranging from Cambrian to present shows both major

Phanerozoic trends in skeletal mineralogy driven by mass extinctions

Changes in ocean chemistry that favoured the precipitation of aragonite or calcite are thought to have influenced the skeletal mineralogy of marine calcifyers. An investigation of the original

Demise of Ediacaran dolomitic seas marks widespread biomineralization on the Siberian Platform

The trigger for biomineralization of metazoans in the terminal Ediacaran, ca. 550 Ma, has been suggested to be the rise of oxygenation or an increase in seawater Ca concentration, but geochemical and
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