By Charles A. Nittrouer, James A. Austin, Michael E. Field, Joseph H. Kravitz, James P. M. Syvitski, Patricia L. Wiberg
This quantity on continental margin sedimentation brings jointly knowledgeable editorial and contributor group to create a cutting-edge source. Taking a world standpoint, the ebook spans a number timescales and content material, starting from how oceans delivery debris, to how thick rock sequences are shaped on continental margins. * Summarizes and integrates our figuring out of sedimentary methods and strata linked to fluvial dispersal platforms on continental cabinets and slopes * Explores timescales starting from particle delivery at one severe, to deep burial on the different * Insights are provided for margins quite often, and with specialise in a tectonically lively margin (northern California) and a passive margin (New Jersey), allowing targeted exam of the elaborate relationships among a large suite of sedimentary approaches and their preserved stratigraphy * comprises observational experiences which record the techniques and strata discovered on specific margins, as well as numerical versions and laboratory experimentation, which supply a quantitative foundation for extrapolation in time and area of insights approximately continental-margin sedimentation * presents a learn source for scientists learning smooth and historical margins, and a tutorial textual content for complicated scholars in sedimentology and stratigraphy.
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Additional resources for Continental Margin Sedimentation: From Sediment Transport to Sequence Stratigraphy
1977a). g. changes in bulk density and sound velocity) that cause acoustic reflections. For adequate identification of seismic reflectors, the sedimentary contrasts must be vertically abrupt (scale of metres) and laterally persistent (scale of hundreds of metres). g. g. , 1995; Lowrie & Kent, 2004) and allows evaluation of a wide range of physical and chemical properties (by downhole measurements using electrical, nuclear and acoustic tools; Goldberg, 1997). g. , 1988, 1999). g. sea-level fluctuations, tectonic motions, sediment supply, ocean currents; Karner & Driscoll, 1997).
The passive origin of the New Jersey margin has created the breadth and depth needed for substantial accumulation on its continental shelf. Major components of the stratigraphy underlying the New Jersey margin are those of deltaic sequences, with the typical morphology of clinoforms. A. Nittrouer et al. qxd 1 Fig. 16 (a) On an active margin, sediments scraped off the subducting oceanic plate create an accretionary prism, causing shelf and slope deposits to be uplifted and recycled by erosion. Uplift also reduces shelf accommodation space and displaces sedimentation to the continental slope.
However, the observed gradient is ~4° and, therefore, other mechanisms must also be operating. , 2000). Groundwater flowing out of continental slopes due to tectonic squeezing or differential loading can destabilize the seabed and reduce gradients (Iverson & Major, 1986; Orange & Breen, 1992). , 2002; Cacchione & Pratson, 2004). qxd increasing compaction Fig. 15 Stratal geometries on continental margins. (a) Model representation of the shoreline (black circles), clinoform rollover (red circles) and shelf break (green circle), which are critical boundaries on continental margins.