Journal ArticleDOI
A chronology of Paleozoic sea-level changes.
Bilal U. Haq,Stephen R. Schutter +1 more
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TLDR
A history of sea-level fluctuations for the entire Paleozoic by using stratigraphic sections from pericratonic and cratonic basins is reconstructed, revealing a gradual rise through the Cambrian and a short-lived but prominent withdrawal in response to Hirnantian glaciation.Abstract:
Sea levels have been determined for most of the Paleozoic Era (542 to 251 million years ago), but an integrated history of sea levels has remained unrealized. We reconstructed a history of sea-level fluctuations for the entire Paleozoic by using stratigraphic sections from pericratonic and cratonic basins. Evaluation of the timing and amplitude of individual sea-level events reveals that the magnitude of change is the most problematic to estimate accurately. The long-term sea level shows a gradual rise through the Cambrian, reaching a zenith in the Late Ordovician, then a short-lived but prominent withdrawal in response to Hirnantian glaciation. Subsequent but decreasingly substantial eustatic highs occurred in the mid-Silurian, near the Middle/Late Devonian boundary, and in the latest Carboniferous. Eustatic lows are recorded in the early Devonian, near the Mississippian/Pennsylvanian boundary, and in the Late Permian. One hundred and seventy-two eustatic events are documented for the Paleozoic, varying in magnitude from a few tens of meters to ∼125 meters.read more
Citations
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Climatic and eustatic controls on the development of a Late Triassic source rock in the Jameson Land Basin, East Greenland
TL;DR: The Graklint Beds, a prospective oil and gas-prone Late Triassic (Mid-Carnian) source rock in the Jameson Land Basin, East Greenland, was identified in this paper.
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Oxygen and hydrogen isotope compositions of paleosol phyllosilicates: Differential burial histories and determination of Middle-Late Pennsylvanian low-latitude terrestrial paleotemperatures
TL;DR: In this article, the authors measured the clay mineralogy, chemistry, and stable hydrogen and oxygen-isotope compositions from 20 phyllosilicate samples representing 11 Pennsylvanian-age paleosol profiles taken from three cores in the Illinois basin in order to assess their utility as proxies of low-latitude terrestrial paleotemperatures.
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Evolution of Laurentian brachiopod faunas during the Ordovician Phanerozoic sea level maximum
TL;DR: The distribution of brachiopod faunas around Laurentia during the Ordovician period was influenced by the dynamicity of the surrounding palaeo-continents as discussed by the authors.
Journal ArticleDOI
Forced Regressive Tidal Flats: Response to Falling Sea Level in Tide-Dominated Settings
TL;DR: In this paper, the authors show that the accretion of intertidal flats on top of subtidal sands is an overlooked yet predictable component of falling-stage systems tracts in tide-dominated settings.
Journal ArticleDOI
Changes in marine nitrogen fixation and denitrification rates during the end-Devonian mass extinction
TL;DR: In this article, the authors analyzed high-stratigraphic-resolution bulk-sediment nitrogen isotope variation (δ 15 N bulk ) in three sections from South China: (1) Long'an, an isolated carbonate platform section, (2) Qilinzhai, a shallow-water platform section between the Yangtze Oldland and the Youjiang Trough, and (3) Malanbian, a deep-water carbonate segment with isolated and continent-attached platforms and deepwater basins that influenced watermass circulation, nutrient
References
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Journal ArticleDOI
The Phanerozoic Record of Global Sea-Level Change
Kenneth G. Miller,Michelle A. Kominz,James V. Browning,James D. Wright,Gregory S. Mountain,Miriam E. Katz,Peter J. Sugarman,Benjamin S. Cramer,Nicholas Christie-Blick,Stephen F. Pekar +9 more
TL;DR: Long-term sea level peaked at 100 ± 50 meters during the Cretaceous, implying that ocean-crust production rates were much lower than previously inferred, and presents a new sea-level record for the past 100 million years.
Journal ArticleDOI
Synchronizing Rock Clocks of Earth History
Klaudia F. Kuiper,Klaudia F. Kuiper,Alan L. Deino,Frederik J Hilgen,Wout Krijgsman,Paul R. Renne,Paul R. Renne,Jan R. Wijbrans +7 more
TL;DR: This calibration of tephras in marine deposits in Morocco to calibrate the age of Fish Canyon sanidine provides tight constraints for the astronomical tuning of pre-Neogene successions, resulting in a mutually consistent age of ∼65.95 Ma for the Cretaceous/Tertiary boundary.
Journal ArticleDOI
Sequences in the Cratonic Interior of North America
TL;DR: The concept of major rock-stratigraphic units of interregional scope was introduced in 1948 by Longwell, 1949 as discussed by the authors, and the sedimentary record of the North American craton from late Precambrian to present is characterized by six major unconformities.
Book
The Concise Geologic Time Scale
TL;DR: For a detailed discussion of the international divisions of geologic time, see as discussed by the authors, where the authors present the standard colors for the international division of geology time scales in detail.
Journal ArticleDOI
Long-Term Sea-Level Fluctuations Driven by Ocean Basin Dynamics
TL;DR: A mantle convection model is used to suggest that New Jersey subsided by 105 to 180 meters in the past 70 million years because of North America's westward passage over the subducted Farallon plate, which reconciles New Jersey margin–based sea-level estimates with ocean basin reconstructions.