Topic
Stack (geology)
About: Stack (geology) is a research topic. Over the lifetime, 53 publications have been published within this topic receiving 1394 citations. The topic is also known as: sea stack.
Papers published on a yearly basis
Papers
1 Jan 2005
TL;DR: A 5.3-Myr stack (LR04) of benthic δ18O records from 57 globally distributed sites aligned by an automated graphic correlation algorithm is presented in this paper.
Abstract: [1] We present a 5.3-Myr stack (the “LR04” stack) of benthic δ18O records from 57 globally distributed sites aligned by an automated graphic correlation algorithm. This is the first benthic δ18O stack composed of more than three records to extend beyond 850 ka, and we use its improved signal quality to identify 24 new marine isotope stages in the early Pliocene. We also present a new LR04 age model for the Pliocene-Pleistocene derived from tuning the δ18O stack to a simple ice model based on 21 June insolation at 65°N. Stacked sedimentation rates provide additional age model constraints to prevent overtuning. Despite a conservative tuning strategy, the LR04 benthic stack exhibits significant coherency with insolation in the obliquity band throughout the entire 5.3 Myr and in the precession band for more than half of the record. The LR04 stack contains significantly more variance in benthic δ18O than previously published stacks of the late Pleistocene as the result of higher-resolution records, a better alignment technique, and a greater percentage of records from the Atlantic. Finally, the relative phases of the stack's 41- and 23-kyr components suggest that the precession component of δ18O from 2.7–1.6 Ma is primarily a deep-water temperature signal and that the phase of δ18O precession response changed suddenly at 1.6 Ma.
770 citations
Journal Article•
TL;DR: In this paper, the authors used an Electronic Total Station (ETS) surveying instrument to determine the marsh erosion rates for six 10-meter shoreline sections over a three-year period.
Abstract: The marsh shoreline in western Rehoboth Bay, Delaware, is rapidly eroding due to wave attack. A 30-90 cm vertical scarp characterizes the shoreline and exposes the present-day rootmat and the underlying mud unit. Using an Electronic Total Station surveying instrument, marsh erosion rates were determined for six 10-meter shoreline sections. Over a three-year period, averaged erosion rates ranged from 14 cm/yr to 43 cm/yr. Three styles of shoreline erosion were observed. (1) Cleft and neck formation-V-shaped notches are cut into an initially "straight" shoreline. Between adjacent clefts, marsh necks, up to three meters in length, occur creating an undulatory shoreline geometry. (2) Neck cut-off-marsh necks can be cut off from the marsh creating a small marsh "stack." (3) Undercutting with rootmat toppling-wave action erodes the lower mud unit faster than the overlying rootmat creating an overhang that eventually topples into the bay. At a decimeter scale, shoreline geometry is due to successive changes in erosional style. In contrast, the geometry of a fringing marsh shoreline over several hundred meters is likely controlled by antecedent topography and not by lateral variations in erosion rates. Rates of erosion are correlated with wave power. The wave power potentially impinging on nine selected marsh shoreline sites was calculated using wind, bathymetric, and fetch data. Erosion rates for each site were plotted against estimated wave powers producing a regression equation that allows erosion rates to be predicted. As wave power increases, the rate of erosion increases.
210 citations
168 citations
TL;DR: In this paper, a detailed study of the mineralogy derived from OMEGA spectral data and geology derived from HRSC imager and other datasets leads to some straightforward issues: the monohydrated sulfate kieserite is found mainly over heavily eroded scarps of light toned material and it likely corresponds to a mineral present in the initial rock formed either during formation and diagenesis of sediments, or during hydrothermal alteration at depth.
165 citations
46 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 3 |
| 2020 | 2 |
| 2019 | 1 |
| 2018 | 3 |
| 2017 | 1 |
| 2016 | 4 |