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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Lochkovian (earliest Devonian) transgressions and regressions along the “Tethyan” margin of Gondwana: A review of lithostratigraphical data
TL;DR: In this article, a review of lithostratigraphical data available from three regions of the “Tethyan” margin of Gondwana, namely Northern Africa, Arabia, and the Tethys Himalaya, suggests that all of them were characterized by a regressive setting in the Lochkovian.
Journal ArticleDOI
Organic geochemistry, sedimentary environment, and organic matter enrichment of limestone-marlstone rhythms in the middle Permian northern Sichuan Basin, China
Pang Qian,Hu Guang,Zhang Xihua,Chen Cong,Gao Zhaolong,Shan Shujiao,Chen Yangui,Hu Chaowei,You Jie +8 more
TL;DR: Li et al. as discussed by the authors investigated the organic geochemical characteristics, formation processes, organic matter enrichment mechanism, and hydrocarbon potentials of these LM-MR rhythms, from perspectives of sedimentology, organic petrology, and geochemistry.
Journal ArticleDOI
In the Shadow of a Giant Reef: Palaeoecology of Mesophotic Coral Communities from the Givetian of Anti-Atlas (Morocco)
Journal ArticleDOI
Early to Middle Devonian ironstone and phosphorite in the northwestern Gondwana Parnaíba Basin, Brazil: A record of an epeiric margin paleoceanographic changes
Maísa Bastos Abram,Michael Holz +1 more
TL;DR: In this article, an integrated study based on sedimentology, sequence stratigraphy, petrography, scanning electron microscopy and X-ray diffraction was conducted to understand the paleoenvironmental, stratigraphic and diagenetic controls.
Journal ArticleDOI
Late Pennsylvanian carbonate platform facies and coral reef: new insights from southern China (Guizhou Province)
Marine Maillet,Wentao Huang,Xiao Li,Zhen-Yuan Yang,Changqing Guan,Yongli Zhang,Enpu Gong,Katsumi Ueno,Elias Samankassou +8 more
TL;DR: The existence of the large Bianping coral reef in southern China, as well as a few additional examples of Pennsylvanian coralliferous bioconstructions, provides evidence that coral communities were able to endure the Late Paleozoic fluctuating paleoenvironmental conditions in specific settings.
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.