Late Cretaceous chronology of large, rapid sea-level changes
Author: K.G. MILLER
Publisher:
Published: 2003
Total Pages:
ISBN-13:
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Author: K.G. MILLER
Publisher:
Published: 2003
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: Mu Ramkumar
Publisher: Elsevier
Published: 2015-11-11
Total Pages: 0
ISBN-13: 9780128054147
DOWNLOAD EBOOKCretaceous Sea Level Rise delves into the question of whether the observed short-term sea-level changes are regional (tectonic) or global (eustatic) and determines their possible relation to climate cycles; to assess the role of feedback mechanisms, i.e. thermal expansion/contraction of seawater, subsidence due to loading by water, changing vegetation of the Earth System and to investigate the relation of sea-level highs and lows to ocean anoxia and oxidation events, represented by black shales and oceanic red beds, and to evaluate the evidence for ephemeral glacial episodes or other climate events. Though research has been, and is being, conducted in these fields since the introduction of sea level cycles and sequence development concepts in the 1970"s, the available information is scattered. Cretaceous Sea Level Rise presents the current understanding and future directions of the research on Cretaceous sea level cycles in a single source, forming a reference work for beginners, graduates and postgraduates who are interested in this subject.
Author: M. Wagreich
Publisher: Geological Society of London
Published: 2020
Total Pages: 269
ISBN-13: 1786204746
DOWNLOAD EBOOKSea-level constitutes a critical planetary boundary for geological processes and human life. Sea-level fluctuations during major greenhouse phases are still enigmatic and strongly discussed in terms of changing climate systems. The geological record of the Cretaceous greenhouse period provides a deep-time view on greenhouse-phase Earthsystem processes that facilitates a much better understanding of the causes and consequences of global, geologically short-term, sea-level changes. In particualr, Cretaceous hothouse periods can serve as a laboratory to better understand a near-future greenhouse Earth. This volume presents high-resolution sea-level records from globally distributed sedimentary archives of the Cretaceous involving a large group of scientists from the International Geoscience Programme IGCP 609. Marine to non-marine sedimentary successions were analysed for revised age constraints, the correlation of global palaeoclimate shifts and sea-level changes, tested for climate-driven cyclicities, and correlated within a high-resolution stratigraphic framework of the Geological Timescale. For hothouse periods, the hypothesis of significant global groundwater-related sea-level change, i.e. aquifer-eustasy as a major process, is reviewed and substantiated.
Author: Enriqueta Barrera
Publisher: Geological Society of America
Published: 1999-01-01
Total Pages: 458
ISBN-13: 9780813723327
DOWNLOAD EBOOKAuthor: Anthony Hallam
Publisher: Columbia University Press
Published: 1992
Total Pages: 294
ISBN-13: 9780231074254
DOWNLOAD EBOOKAmid widespread international concern over changes in ocean levels resulting from the greenhouse effect, Anthony Hallam's Phanerozoic Sea-Level Changes is the first book exclusively dedicated to sea-level change in the Phanerozoic Eon, the time ranging from 590 million years ago to the present.
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DOWNLOAD EBOOKClimate and sea-level fluctuations across the Cretaceous- ertiary (K- ) transition in Tunisia were examined based on bulk rock and clay mineralogies, biostratigraphy and lithology in five sections (El Melah, El Kef, Elles, Ain Settara and Seldja) spanning from open marine to shallow inner neritic environments. Late Campanian to early Danian trends examined at El Kef and Elles indicate an increasingly more humid climate associated with sea-level fluctuations and increased detrital influx that culminates at the K- transition. This long-term trend in increasing humidity and runoff in the Tethys region is associated with middle and high latitude cooling. Results of short-term changes across the K- transition indicate a sea-level lowstand in the latest Maastrichtian about 25- 00 ka below the K- boundary with the regression marked by increased detrital influx at El Kef and Elles and a short hiatus at Ain Settara. A rising sea-level at the end of the Maastrichtian is expressed at Elles and El Kef by deposition of a foraminiferal packstone. A flooding surface and condensed sedimentation mark the K- boundary clay which is rich in terrestrial organic matter. The P0- 1a transition is marked by a sea-level lowstand corresponding to a short hiatus at Ain Settara where most of P0 is missing and a period of non-deposition and erosion in the lower part of P1a (64.95 Ma). At Seldja, P0 and possibly the topmost part of CF1 are missing. These sea-level fluctuations are associated with maximum humidity. These data suggest that in Tunisia, long-term environmental stresses during the last 500 ka before the K- boundary and continuing into the early Danian are primarily related to climate and sea-level fluctuations. Within this long-term climatic trend the pronounced warm and humid event within the latest Maastrichtian Zone CF1 may be linked to greenhouse conditions induced by Deccan volcanism. The absence of any significant clay mineral variations at or near the K- boundary and Ir a.
Author: Svetlana F. Mizintseva
Publisher:
Published: 2013
Total Pages: 179
ISBN-13:
DOWNLOAD EBOOKLarge, rapid global sea-level changes challenge the paradigm of stable Late Cretaceous greenhouse climates, even during peak intervals of global warmth. Sequence stratigraphic studies on the New Jersey margin yielded evidence of large and rapid sea-level lowerings in the Santonian to early Campanian. The duration and rate of such fluctuations can only be explained by glacioeustatic change. Interpretation of deep-sea benthic foraminiferal oxygen isotopic records and interregional correlations of sequence stratigraphic records provides evidence for the glacioeustatic origin of Santonian to early Campanian sequences.
Author: Ashu Khosla
Publisher: New Mexico Museum of Natural History and Science
Published: 2016-01-01
Total Pages: 346
ISBN-13:
DOWNLOAD EBOOKAuthor: Martin M.J. Bless
Publisher:
Published: 1986
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKAuthor: Graham Ryder
Publisher: Geological Society of America
Published: 1996-01-01
Total Pages: 586
ISBN-13: 9780813723075
DOWNLOAD EBOOK"This volume atempts to explore and clarify the relationship among the geological records, the extinctions, and the causes of catastrophes for life in Earth's history. Most of the papers address the geological record and the extinctions across the Cretaceou-Teriary boundary, and the buried Chicxulub structure that is now consensually deemed to be of impact origin and to be intimately related to that boundary." (GSA website).