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Internally generated, or autogenic, terrestrial and marine sediment-transport dynamics can produce depositional patterns similar to those associated with climatic, tectonic, or sea level changes. A central challenge in accurately interpreting the sedimentary archive is determining what scales and types of deposits reflect autogenic controls on sedimentation in different environments. Autogenic sediment-transport dynamics commonly result from intermittent sediment storage in transient landforms, which produces episodic, spatially discontinuous sedimentation across a basin. The transition from localized, variable sedimentation to even, basin-wide sedimentation marks the shift from stochastic landscape dynamics to deterministic deposition responding to the long-term balance between sediment supply and the creation of space to accommodate sediment. This threshold can be measured in a wide variety of stratigraphic successions and has important bearing on whether climatic, tectonic, or sea level signals can be recognized in physical sedimentary deposits.
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Supplemental Video 1: A physical experiment showing fast-acting autogenic surface dynamics (mobile channel network) filling a basin experiencing large-scale sea level changes. Video is associated with the results presented in Hajek et al. (2014).
Supplemental Videos 2–4: Overhead images of the experiments shown in panels a, b, and c of Figure 2. Permission for video use is granted by the author (Li et al. 2016) and also under the GSA copyright.
Supplemental Video 5: An animation of the buildup of the stratigraphic successions shown in Figure 2a. Permission for video use is granted by the author (Li et al. 2016) and also under the GSA copyright.
Supplemental Video 6: Overhead images from the TDB-10-1 experiment shown in Figure 3. Video is available to share under the GSA copyright guidelines associated with Wang et al. (2011).
Supplemental Video 7: An animation of the stratigraphic buildup of the cross sections.