Meandering Streamflows Patterns And Processes Across Landscapes And Scales

Meandering Streamflows: Patterns and Processes across Landscapes and Scales

Meandering patterns shaped by fluid flows are found over a broad range of landscapes, from bedrock channels to rivers and estuaries, deep-marine environments, supraglacial streams and other planets such as Mars and Venus. During the last six decades, meanders have been widely investigated by researchers from different fields, such as fluid mechanics, geomorphology, ecology, civil- and petroleum engineering, and geology. This volume seeks to push the science of meandering forward by bringing together insights gained from field, laboratory and numerical investigations of meandering streams found in distinct environmental and geological contexts. The authors pay particular attention to the interactions between autogenic and allogenic processes that affect meander kinematics and the resulting morphology, sedimentology and stratigraphic architecture. The findings presented in this volume contribute to a better understanding of stream meandering in diverse settings, with broad implications for stream and wetland restoration, land management, infrastructure design, oil exploration and production, carbon sequestration, hazard mitigation and planetary palaeoenvironmental reconstructions.

Industrial Minerals and Extractive Industry Geology

The Middle and Late Jurassic Intrashelf Basin of the Eastern Arabian Peninsula

This memoir provides a thorough review of the geology of the rimmed Arabian Intrashelf Basin, reconciling differing interpretations of lithostratigraphy, sequence stratigraphy and biostratigraphy. Variation of energy levels and facies due to its setting in the SE palaeotradewind belt are described. The roles subtle tectonism played in developing the basin and in the Late Jurassic creating restriction by uplift and exposure of the Tethys shelf are evaluated. The intrashelf basin formed during rising sea level as a single rimmed carbonate intrashelf basin. A possible global cooling phase resulted in a lowstand which restricted the basin, resulting in petrographically unique carbonate source rock facies dominated by cyanobacterial deposition. Two subsequent 3rd order carbonate sequences largely filled the basin. Eustatic change concomitant with uplift of the Tethys shelf resulted in alternation of carbonates and evaporites (gypsum-anhydrite) across the region. The end result was a sealed intrashelf basin which preserved early-formed porosity and confined generated hydrocarbons within the intrashelf basin facies.