Origin of peloids in Early Cretaceous deposits, Dorset, South England

  title={Origin of peloids in Early Cretaceous deposits, Dorset, South England},
  author={Elias Samankassou and Jonas Tresch and Andr{\'e} Strasser},
Peloids are ubiquitous components in modern and fossil carbonates. The term peloid is non-genetic because the origin of these grains and the pathways of their formation are not fully understood. Based on Berriasian material originating from Dorset, southern England, we report here on peloids that result from the more or less in-place breakdown of previously micritized bivalve shells. The continuum from shell breakdown to peloids is documented by petrography and observation by scanning electron… 
Upper Devonian (Frasnian) stromatactis-bearing mud mounds, western Alberta, Canada: reef framework dominated by peloidal microcrystalline calcite
  • Kai Zhou, B. Pratt
  • Environmental Science, Geography
    Journal of Sedimentary Research
  • 2019
Two well-preserved mud mounds, approximately 50 m thick, in the Mount Hawk Formation (Upper Devonian, Frasnian) in western Alberta provide an unparalleled opportunity to study the microstructure of
Subtidal stromatolites from the Sinemurian of the Lusitanian Basin (Portugal)
Well-preserved dome-shaped carbonate stromatolites occur in the lowermost part of the Sinemurian of the Lusitanian Basin (Portugal), at S. Pedro de Moel region (W of the basin). Deposition in the
Microfacies, diagenesis, and stable isotope analysis of the Jurassic Jumara Dome carbonates, Kachchh, Western India: Implications for depositional environments and reservoir quality
The microfacies, detailed diagenesis, and stable isotope analysis of the carbonates, exposed at Jumara Dome, have been analysed to explore their impact on reservoir quality. The carbonates of Jumara
Depositional environment, diagenesis, and geochemistry of Devonian Bahram formation carbonates, Eastern Iran
The Middle-Upper Devonian Bahram Formation carbonates in eastern Iran were investigated in three stratigraphic sections including Cheshmeh Shir (NE Tabas), Kamar Kuh (S Kashmar), and Hozedorah (E
Diagenetic model of carbonate rocks of Guri Member of Mishan Formation (Lower to Middle Miocene) SE Zagros basin, Iran
In order to understand the post-depositional history of carbonate rocks of Guri Member (Lower to Middle Miocene), three stratigraphic sections were selected in north Bandar-Abbas in southeast of


Peloidal fabrics in Upper Jurassic reefal limestones, Weald Basin, southern England
Approaches to paleoecology
A study of foraminiferal assemblages of modern seas has disclosed striking correlations between form, structure, and environment. Among hyaline genera, species of Virgulina in shallow waters have
Marine peloids; a product of bacterially induced precipitation of calcite
High-magnesian calcite peloids are a common constituent of cemented marine carbonate accumulations. They are abundant and well developed within both isolated microcavities and surface crusts. The
Nutrient-triggered bioerosion on a giant carbonate platform masking the postextinction Famennian benthic community
The Palliser Formation of western Canada constitutes a giant, tropical carbonate platform of Famennian age. Although now mostly composed of peloids, aggregates, intraclasts, and cortoids, a major
Ancient Sediments of Bahaman Type
Ancient limestones of Bahaman type are considered to be a common rock type. Their recognition and interpretation of the regional facies relationships may lead to the discovery of oil reservoirs in
Micritized Skeletal Grains in Northern Belize Lagoon: A Major Source of Mg-calcite Mud
ABSTRACT Lime mud in northern Belize lagoon is composed predominantly of silt-size cryptocrystalline grains and clay-size clumps, both of which consist of anhedral, equant crystals less than 0.5 µm
Boring algae, micrite envelopes and lithification of molluscan biosparites
The preservation of molluscan shells as calcite casts is commonly a result of their centripetal replacement, while on the sea floor, by a stable micrite envelope. This grows in three stages: (1)
Bahaman Calcareous Sands
The major part of the Bahama Banks is covered with a mantle of sands composed of calcium carbonate. They rest on a basement of similar sediment which has been consolidated into limestone by the