Mississippian epoch
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| Mississippian epoch | |
|---|---|
| Name | Mississippian epoch |
| Start | 358.9 |
| End | 323.2 |
| Former names | Lower Carboniferous |
| Chronology | Carboniferous Period |
| Timescale authority | International Commission on Stratigraphy |
| Strat unit | Epoch |
Mississippian epoch
The Mississippian epoch is a geologic interval of the Carboniferous Period characterized by widespread carbonate deposition, diverse marine faunas, and major tectono-eustatic changes that shaped the Paleoequatorial and Panthalassic margins. Its study involves researchers affiliated with institutions such as the International Commission on Stratigraphy, United States Geological Survey, British Geological Survey, Geological Society of America, and museums like the Smithsonian Institution and the Natural History Museum, London.
Overview
During the Mississippian epoch, stratigraphers correlated sections across regions studied by geologists from the University of Oxford, University of Cambridge, Harvard University, Yale University, University of Chicago, Stanford University, University of California, Berkeley, University of Bonn, University of Paris, Uppsala University, and University of Tokyo. Paleontologists working at collections in the American Museum of Natural History, Field Museum of Natural History, Royal Ontario Museum, Royal Tyrrell Museum, Museum für Naturkunde, Berlin, and Australian Museum have documented marine invertebrates preserved in limestones and cherts. Biostratigraphic frameworks developed by researchers at the Paleontological Society, European Geosciences Union, Society for Sedimentary Geology (SEPM), and regional surveys such as the Geological Survey of Canada underpin correlations with Permian successions in basins examined by the Bureau of Economic Geology and the Geological Survey of India.
Stratigraphy and Chronology
Stratigraphers use conodont zonation refined by teams at Ohio State University, University of Kansas, University of Iowa, Imperial College London, and the University of Leeds to subdivide the Mississippian into stages recognized by the International Chronostratigraphic Chart. Regional stage names from the British Isles (e.g., Tournaisian, Visean) and the United States (e.g., Kinderhookian, Osagean) are integrated with global frameworks developed at meetings of the International Commission on Stratigraphy and published by editors associated with the Geological Society of London and the American Association of Petroleum Geologists. Key type sections and reference profiles are preserved in outcrops examined by teams from the University of Glasgow, Trinity College Dublin, University of Salamanca, and the Universidad Nacional Autónoma de México.
Paleoenvironments and Climate
Paleoenvironmental reconstructions combine sedimentological work from researchers at the University of Texas at Austin, California Institute of Technology, Massachusetts Institute of Technology, and the Geological Survey of Norway with isotope studies published in journals supported by the Royal Society and the National Academy of Sciences. Mississippian paleoclimates influenced reef systems mapped in areas investigated by scientists from the University of Western Australia, Curtin University, Monash University, and the University of Queensland. Analyses by teams at the Max Planck Institute for Chemistry, Columbia University, University of Arizona, University of Southern California, and the Scripps Institution of Oceanography link carbonate platform development to global carbon cycles explored by the International Geosphere-Biosphere Programme and the PAGES (Past Global Changes) network.
Fauna and Flora
Fossil faunas documented by curators at the Denver Museum of Nature & Science, Houston Museum of Natural Science, Royal Belgian Institute of Natural Sciences, Museo Nacional de Ciencias Naturales (Spain), and the Senckenberg Gesellschaft für Naturforschung include abundant brachiopods, crinoids, bryozoans, and corals studied by teams from the Palaeontological Association, British Palaeontological Association, North American Paleontological Convention, and university departments at University of Michigan, Pennsylvania State University, McGill University, and University of Alberta. Cartilaginous and bony fish occurrences analyzed by researchers at the Natural History Museum, Vienna, University of Copenhagen, Lund University, University of Oslo, and Stockholm University inform vertebrate evolution narratives linked to exhibits at the National Museum of Natural History (France). Plant macrofossils and spores curated by the Royal Botanic Gardens, Kew, Missouri Botanical Garden, Botanical Museum Berlin-Dahlem, and the New York Botanical Garden reveal floras compared by paleobotanists from University of Göttingen, University of Bern, University of Montpellier, and University of São Paulo.
Tectonics and Sea-Level Changes
Tectonic syntheses developed by groups at the Geological Survey of Finland, Instituto Geológico y Minero de España, Instituto Geológico y Minero de Portugal, Chinese Academy of Sciences, Korea Institute of Geoscience and Mineral Resources, and the Geological Survey of Japan relate Mississippian transgressions to assembly processes involving paleocontinents studied in seminars at the Royal Society of Edinburgh and conferences hosted by the International Union of Geological Sciences. Eustatic curves compiled by investigators at the University of Bristol, University of Southampton, University of Liverpool, University of Manchester, and Durham University integrate datasets from basins sampled by the Bureau of Reclamation, Alaska Division of Geological & Geophysical Surveys, and regional petroleum agencies such as the Norwegian Petroleum Directorate and the Alberta Energy Regulator.
Economic Geology and Resources
Economic geology of Mississippian strata has been assessed by experts at the Society of Economic Geologists, American Institute of Professional Geologists, International Association on the Genesis of Ore Deposits, and exploration groups within companies collaborating with research groups at University of Texas at Austin and the Louisiana State University. Reservoir studies relevant to hydrocarbons and carbonates involve collaborators from the Society for Petroleum Engineers, Chevron Corporation, ExxonMobil, BP, Shell plc, and national oil companies such as Petrobras, PDVSA, PetroChina, Equinor, and Gazprom Neft. Mineral deposits and industrial carbonates mined in regions regulated by the United States Bureau of Land Management, Natural Resources Canada, and the Australian Government Department of Industry, Science and Resources supply raw materials for firms listed on exchanges including the New York Stock Exchange and the London Stock Exchange.
Legacy and Stratigraphic Usage
The Mississippian epoch continues to be a focus of international collaborations coordinated by organizations like the International Commission on Stratigraphy, United Nations Educational, Scientific and Cultural Organization, International Union of Geological Sciences, and regional bodies such as the European Commission research initiatives and national academies including the Royal Society, National Academy of Sciences (USA), Académie des Sciences (France), and the Deutsche Forschungsgemeinschaft. Educational outreach and museum programs at institutions such as the Smithsonian Institution, Natural History Museum, London, Field Museum of Natural History, and universities worldwide keep Mississippian research integrated with modern stratigraphic practice and public science communication.