25 research outputs found

    Continental-scale landscape evolution: a history of North American topography

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    The generation and evolution of continental topography are fundamental geologic and geomorphic concerns. In particular, the history of landscape development might contain useful information about the spatiotemporal evolution of deep Earth processes, such as mantle convection. A significant challenge is to generate observations and theoretical predictions of sufficient fidelity to enable landscape evolution to be constrained at scales of interest. Here, we combine substantial inventories of stratigraphic and geomorphic observations with inverse and forward modeling approaches to determine how the North American landscape evolved. First, stratigraphic markers are used to estimate postdepositional regional uplift. Present‐day elevations of these deposits demonstrate that >2 km of long‐wavelength surface uplift centered on the Colorado‐Rocky‐Mountain plateaus occurred in Cenozoic times. Second, to bridge the gaps between these measurements, an inverse modeling scheme is used to calculate the smoothest spatiotemporal pattern of rock uplift rate that yields the smallest misfit between 4,161 observed and calculated longitudinal river profiles. Our results suggest that Cenozoic regional uplift occurred in a series of stages, in agreement with independent stratigraphic observations. Finally, a landscape evolution model driven by this calculated rock uplift history is used to determine drainage patterns, denudation, and sedimentary flux from Late Cretaceous times until the present day. These patterns are broadly consistent with stratigraphic and thermochronologic observations. We conclude that a calibrated inverse modeling strategy can be used to reliably extract the temporal and spatial evolution of the North American landscape at geodynamically useful scales

    The Sword of Judith

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    The Book of Judith tells the story of a fictitious Jewish woman beheading the general of a powerful army to free her people. The parabolic story was set as an example of how God will help the righteous. Judith’s heroic action not only became a validating charter myth of Judaism itself but has also been appropriated by many Christian and secular groupings, and has been an inspiration for numerous literary texts and works of art. It continues to exercise its power over artists, authors and academics and is becoming a major field of research in its own right. The Sword of Judith is the first multidisciplinary collection of essays to discuss representations of Judith throughout the centuries. It transforms our understanding across a wide range of disciplines. The collection includes new archival source studies, the translation of unpublished manuscripts, the translation of texts unavailable in English, and Judith images and music. This volume is part of the Re: Enlightenment Project formed as a collaboration between New York University, New York Public Library and other distinguished academic institutions. As with all Open Book publications the entire work is available free to read online, while printable digital editions of the volume together with additional resources can be downloaded from the publisher’s website: www.openbookpublishers.co
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