Multi-resolution visualization of time-dependent horizons on the globe. Stensby, Vidar, T., Tarrou, C., Bruaset, Magnus, A., Skogseid, J., Thurmond, A. K., & Heine, C. 2008. abstract bibtex The Cenozoic flooding history of Australia is characterized by progressive inundation, contradicting the global eustatic sea level fall since the Late Cretaceous. We attribute this unique flooding history to increasing negative dynamic topography with the Australian continent moving towards the SE Asian subduction zone system. By combining plate kinematics with a global mantle convection model, paleogeographic data, eustatic sea level estimates and sediment backstripping, it is possible to reconstruct the Australia flooding history for the last 70 Ma on a continental scale. We use the well-established analytical flow model approach for mantle convection modeling during the Tertiary, based on mantle density anomalies derived from the S20RTS shear-wave tomography model. Time-dependent dynamic surface topography is computed from this convection model using a free upper surface, and combined with a global sea level curve to model continental inundation. Sediments in two major Tertiary depocentres, the Murray-Darling and Eucla basins, are backstripped through time to adjust the topographic baseline of the elevation model. We show that a combined eustasy and mantle-driven dynamic topography effect, scaled with a factor that is chosen based on comparison with published geological observations, can successfully predict Australia's changing paleogeography through time and account for regional episodes of subsidence and uplift, whose origin were previously unknown. We find that eustasy and scaled mantle-driven dynamic topography are of similar magnitude for the Late Tertiary in Australia. As first-order sea level dropped due to progressive glaciation, much of Australia was drawn down as it moved towards the southeast Asian slab burial grounds, compensating and partly outpacing the eustatic effect for much of Australia during it's northward motion away from Antarctica. We conclude that understanding the interplay between eustasy and mantle-driven dynamic topography is critical for understanding hinterland uplift, basin subsidence, the formation and destruction of shallow epeiric seas and lakes and their facies distribution.
@conference{ Stensby.IGC.08,
address = {6.--14. August, Oslo, Norway},
author = {Stensby, Trond Vidar and Tarrou, Christian and Bruaset, Are Magnus and Skogseid, Jakob and Kennedy Thurmond, Allison and Heine, Christian},
booktitle = {33rd International Geological Congress},
date-added = {2008-09-02 16:52:48 +0200},
date-modified = {2008-09-02 16:54:11 +0200},
organization = {IUGS},
title = {{Multi-resolution visualization of time-dependent horizons on the globe}},
year = {2008},
abstract = {The Cenozoic flooding history of Australia is characterized by progressive inundation, contradicting the global eustatic sea level fall since the Late Cretaceous. We attribute this unique flooding history to increasing negative dynamic topography with the Australian continent moving towards the SE Asian subduction zone system. By combining plate kinematics with a global mantle convection model, paleogeographic data, eustatic sea level estimates and sediment backstripping, it is possible to reconstruct the Australia flooding history for the last 70 Ma on a continental scale.
We use the well-established analytical flow model approach for mantle convection modeling during the Tertiary, based on mantle density anomalies derived from the S20RTS shear-wave tomography model. Time-dependent dynamic surface topography is computed from this convection model using a free upper surface, and combined with a global sea level curve to model continental inundation.
Sediments in two major Tertiary depocentres, the Murray-Darling and Eucla basins, are backstripped through time to adjust the topographic baseline of the elevation model. We show that a combined eustasy and mantle-driven dynamic topography effect, scaled with a factor that is chosen based on comparison with published geological observations, can successfully predict Australia's changing paleogeography through time and account for regional episodes of subsidence and uplift, whose origin were previously unknown. We find that eustasy and scaled mantle-driven dynamic topography are of similar magnitude for the Late Tertiary in Australia. As first-order sea level dropped due to progressive glaciation, much of Australia was drawn down as it moved towards the southeast Asian slab burial grounds, compensating and partly outpacing the eustatic effect for much of Australia during it's northward motion away from Antarctica. We conclude that understanding the interplay between eustasy and mantle-driven dynamic topography is critical for understanding hinterland uplift, basin subsidence, the formation and destruction of shallow epeiric seas and lakes and their facies distribution.}
}
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By combining plate kinematics with a global mantle convection model, paleogeographic data, eustatic sea level estimates and sediment backstripping, it is possible to reconstruct the Australia flooding history for the last 70 Ma on a continental scale. We use the well-established analytical flow model approach for mantle convection modeling during the Tertiary, based on mantle density anomalies derived from the S20RTS shear-wave tomography model. Time-dependent dynamic surface topography is computed from this convection model using a free upper surface, and combined with a global sea level curve to model continental inundation. Sediments in two major Tertiary depocentres, the Murray-Darling and Eucla basins, are backstripped through time to adjust the topographic baseline of the elevation model. We show that a combined eustasy and mantle-driven dynamic topography effect, scaled with a factor that is chosen based on comparison with published geological observations, can successfully predict Australia's changing paleogeography through time and account for regional episodes of subsidence and uplift, whose origin were previously unknown. We find that eustasy and scaled mantle-driven dynamic topography are of similar magnitude for the Late Tertiary in Australia. As first-order sea level dropped due to progressive glaciation, much of Australia was drawn down as it moved towards the southeast Asian slab burial grounds, compensating and partly outpacing the eustatic effect for much of Australia during it's northward motion away from Antarctica. We conclude that understanding the interplay between eustasy and mantle-driven dynamic topography is critical for understanding hinterland uplift, basin subsidence, the formation and destruction of shallow epeiric seas and lakes and their facies distribution.","address":"6.--14. August, Oslo, Norway","author":["Stensby","Vidar, Trond","Tarrou, Christian","Bruaset","Magnus, Are","Skogseid, Jakob","Thurmond, Allison Kennedy","Heine, Christian"],"author_short":["Stensby","Vidar, T.","Tarrou, C.","Bruaset","Magnus, A.","Skogseid, J.","Thurmond, A.<nbsp>K.","Heine, C."],"bibtex":"@conference{ Stensby.IGC.08,\n address = {6.--14. August, Oslo, Norway},\n author = {Stensby, Trond Vidar and Tarrou, Christian and Bruaset, Are Magnus and Skogseid, Jakob and Kennedy Thurmond, Allison and Heine, Christian},\n booktitle = {33rd International Geological Congress},\n date-added = {2008-09-02 16:52:48 +0200},\n date-modified = {2008-09-02 16:54:11 +0200},\n organization = {IUGS},\n title = {{Multi-resolution visualization of time-dependent horizons on the globe}},\n year = {2008},\n abstract = {The Cenozoic flooding history of Australia is characterized by progressive inundation, contradicting the global eustatic sea level fall since the Late Cretaceous. We attribute this unique flooding history to increasing negative dynamic topography with the Australian continent moving towards the SE Asian subduction zone system. By combining plate kinematics with a global mantle convection model, paleogeographic data, eustatic sea level estimates and sediment backstripping, it is possible to reconstruct the Australia flooding history for the last 70 Ma on a continental scale. \n\nWe use the well-established analytical flow model approach for mantle convection modeling during the Tertiary, based on mantle density anomalies derived from the S20RTS shear-wave tomography model. Time-dependent dynamic surface topography is computed from this convection model using a free upper surface, and combined with a global sea level curve to model continental inundation. \nSediments in two major Tertiary depocentres, the Murray-Darling and Eucla basins, are backstripped through time to adjust the topographic baseline of the elevation model. We show that a combined eustasy and mantle-driven dynamic topography effect, scaled with a factor that is chosen based on comparison with published geological observations, can successfully predict Australia's changing paleogeography through time and account for regional episodes of subsidence and uplift, whose origin were previously unknown. We find that eustasy and scaled mantle-driven dynamic topography are of similar magnitude for the Late Tertiary in Australia. As first-order sea level dropped due to progressive glaciation, much of Australia was drawn down as it moved towards the southeast Asian slab burial grounds, compensating and partly outpacing the eustatic effect for much of Australia during it's northward motion away from Antarctica. We conclude that understanding the interplay between eustasy and mantle-driven dynamic topography is critical for understanding hinterland uplift, basin subsidence, the formation and destruction of shallow epeiric seas and lakes and their facies distribution.}\n}","bibtype":"conference","booktitle":"33rd International Geological Congress","date-added":"2008-09-02 16:52:48 +0200","date-modified":"2008-09-02 16:54:11 +0200","id":"Stensby.IGC.08","key":"Stensby.IGC.08","organization":"IUGS","title":"Multi-resolution visualization of time-dependent horizons on the globe","type":"conference","year":"2008","bibbaseid":"stensby-vidar-tarrou-bruaset-magnus-skogseid-thurmond-heine-multiresolutionvisualizationoftimedependenthorizonsontheglobe-2008","role":"author","urls":{},"downloads":0,"html":""},"search_terms":["multi","resolution","visualization","time","dependent","horizons","globe","stensby","vidar","tarrou","bruaset","magnus","skogseid","thurmond","heine"],"keywords":[],"authorIDs":["5460c89ecff45d9c640001b1"],"dataSources":["z8kARNp3G2sZZjDcE"]}