Cretaceous Climate Events and Short-Term Sea-Level Changes


Book Description

Sea-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.




The Geology of Iberia: A Geodynamic Approach


Book Description

Pursuing an innovative, global approach, this unique book provides an updated review of the geology of Iberia and its continental margins from a geodynamic perspective. Owing to its location close to successive plate margins, Iberia has played a pivotal role in the geodynamic evolution of the Gondwanan, Rheic, Pangea, Tethys and Eurasian plates over the last 600 Ma of Earth’s history. The geological record starts with the amalgamation of Gondwana in the Neoproterozoic, which was succeeded by the rifting and spreading of the Rheic ocean; its demise, which led to the amalgamation of Pangea in the late Paleozoic; the rifting and spreading of several arms of the Neotethys ocean in the Mesozoic Era and their ongoing closure, which was responsible for the Alpine orogeny. The significant advances in the last 20 years have increasingly attracted international interest in exploring the geology of the Iberian Peninsula. This volume focuses on the Cenozoic basins of the Iberian Geology and consequently the most recent sedimentary features in the Iberian Geology apart of the active ones. In this book, you will find a detailed explanation of the alpine foreland basins, the extension of the west Mediterranean as well as the latest magmatism in Iberia.







Evolution of the Levant Margin and Western Arabia Platform Since the Mesozoic


Book Description

With original data in various fields from the offshore Levant Basin and adjacent continental slopes and platforms, these papers document the tectonic structures and sedimentological patterns associated with the development of the Levant Basin.




Evolution of the Mid-Cretaceous Triad


Book Description

Paleoceanographic conditions which led to the formation of the "mid"-cretaceous triad along the northern Tethys margin are elucidated. In the first part, the evolution of this sequence is traced from the demise of the platform to the return of the detritus dominated deposition. The second part includes a discussion of the reconstructed paleoceanographic and tectonic variables, their possible interaction as well as their influence on sediment properties.







North African Cretaceous Carbonate Platform Systems


Book Description

This volume arises from the NATO Advanced Research Workshop (ARW) on 'North African Cretaceous rudist and coral formations and their contributions to carbonate platform development , which was held in Tunisia, on 13-18 May, 2002. It was convened by M. El Hedi Negra (Universite 7 Novembre de Carthage, now Universite de Tunis El Manar, Tunisia) and Eulalia Gili (Universitat Autonoma de Barcelona, Spain). The aims of the ARW were: (1) to review and critically assess currently available data on rudist/coral formations in North African Cretaceous carbonate platforms, and their correlations, and to integrate these data with other studies around the Mediterranean; (2) to place the findings in a global context, noting both similarities with other regions of platform development as well as local differences, and (3) exploring possible reasons for these; and to help promote the creation of a vibrant peri-Mediterranean collaborative research community, embracing researchers from the entire region, to carry forward this ambitious research programme. Twenty-two presentations (oral and poster) provided both topical reviews (covering rudist evolution, and ecology, mineralogical changes, applications of strontium isotope, and graphic correlation methods, and platform typology) as well as regional syntheses (Tunisian reservoirs, Moroccan platform history, Tunisian platforms and rudist/coral facies, Algerian platforms, and Egyptian platforms). Fifteen of these presentations are expanded here as papers. The workshop was attended by 24 academic staff, 4 geologists from the oil industry, plus several observers and students.