Insights on a Proposed Mid-Holocene Highstand Along the Northwestern Gulf of Mexico from the Evolution of Small Coastal Ponds

Simms, Alexander R.; Aryal, Niranjan; Yokoyama, Yūsuke; Matsuzaki, Hiroyuki; DeWitt, Regina

doi:10.2110/jsr.2009.079

Cited by 18 publications

(10 citation statements)

References 60 publications

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“…Debate exists over the evolution of sea level in the Gulf of Mexico during the Holocene. Some investigators have proposed that Gulf sea level has risen in a generally smooth and continuous fashion through the mid-late Holocene (Otvos 2001, Törnqvist et al 2004, Wright et al 2005, Donnelly and Giosan 2008, Milliken et al 2008, Simms et al 2009), while more complex sea level curves for the region have also been suggested (Stapor et al 1991, Tanner 1992, Morton et al 2000. Dating of relic beach ridges along the northern Gulf of Mexico has been offered as evidence for periods of higher than modern sea level (~ +2m) during the mid-Holocene (Morton et al 2000, Blum et al 2003).…”

Section: Site Sensitivity To Storm Surge Through Timementioning

confidence: 99%

A decadally-resolved paleohurricane record archived in the late Holocene sediments of a Florida sinkhole

Lane¹,

Donnelly²,

Woodruff³

et al. 2011

Marine Geology

139

221

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A 4500-year record of hurricane-induced storm surges is developed from sediment cores collected from a coastal sinkhole near Apalachee Bay, Florida. Recent deposition of sand layers in the upper sediments of the pond was found to be contemporaneous with significant, historic storm surges at the site modeled using SLOSH and the Best Track, post-1851 A.D. dataset. Using the historic portion of the record for calibration, paleohurricane deposits were identified by sand content and dated using radiocarbon-based age models. Marine-indicative foraminifera, some originating at least 5 km offshore, were present in several modern and ancient storm deposits. The presence and long-term preservation of offshore foraminifera suggest that this site and others like it may yield promising microfossil-based paleohurricane reconstructions in the future. Due to the sub-decadal (~ 7 year) resolution of the record and the site's high susceptibility to hurricane-generated storm surges, the average, local frequency of recorded events, approximately 3.9 storms per century, is greater than that of previously published paleohurricane records from the region. The high incidence of recorded events permitted a time series of local hurricane frequency during the last five millennia to be constructed. Variability in the frequency of the largest storm layers was found to be greater than what would likely occur by chance alone, with intervals of both anomalously high and low storm frequency identified. However, the rate at which smaller layers were deposited was relatively constant over the last five millennia. This may suggest that significant variability in hurricane frequency has occurred only in the highest magnitude events. The frequency of high magnitude events peaked near 6 storms per century between 2800 and 2300 years ago. High magnitude events were relatively rare with about 0-3 storms per century occurring between 1900 to 1600 years ago and between 400 to 150 years ago. A marked decline in the number of large storm deposits, which began around 600 years ago, has persisted through present with below average frequency over the last 150 years when compared to the preceding five millennia.

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Section: Site Sensitivity To Storm Surge Through Timementioning

confidence: 99%

A decadally-resolved paleohurricane record archived in the late Holocene sediments of a Florida sinkhole

Lane¹,

Donnelly²,

Woodruff³

et al. 2011

Marine Geology

139

221

View full text Add to dashboard Cite

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“…[], Simms et al . [], and Wright et al . [], whereas the heat flow trend shown here represents the average trend of values taken from the precise 2‐D maps calculated from the McKenzie crustal rifting model [ Jarvis and McKenzie , ; McKenzie , ] and assigned separately to each modeled event (e.g., layer deposition) over the history of the basin.…”

Section: Modeling Approachmentioning

confidence: 99%

“…Sea level changes in the history of the northern Gulf of Mexico, mostly driven by plate tectonics, reached up to hundreds of meters until it achieved a relatively stagnant period after the initial 10 Ma of evolution. The paleo‐water depth trend used in the modeling study (Figure ) resulted from a compilation of data from various sources of a different time resolution starting from 165 Ma up to the present day [ Alegret and Thomas , ; Davis , ; Miller et al ., ; Salvador , ; Schroeder et al ., ; Simms et al ., ; Wright et al ., ] based on paleo‐basin reconstruction, oxygen isotope data, as well as interglacial and glacial shoreline locations. Due to sparse data on Jurassic or Cretaceous periods, some interpolations, especially for the older (>60 Ma) systems, were unavoidable.…”

Section: Modeling Approachmentioning

confidence: 99%

3‐D basin‐scale reconstruction of natural gas hydrate system of the Green Canyon, Gulf of Mexico

Burwicz

Reichel

Wallmann

et al. 2017

Geochem Geophys Geosyst

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Our study presents a basin‐scale 3‐D modeling solution, quantifying and exploring gas hydrate accumulations in the marine environment around the Green Canyon (GC955) area, Gulf of Mexico. It is the first modeling study that considers the full complexity of gas hydrate formation in a natural geological system. Overall, it comprises a comprehensive basin reconstruction, accounting for depositional and transient thermal history of the basin, source rock maturation, petroleum components generation, expulsion and migration, salt tectonics, and associated multistage fault development. The resulting 3‐D gas hydrate distribution in the Green Canyon area is consistent with independent borehole observations. An important mechanism identified in this study and leading to high gas hydrate saturation (>80 vol %) at the base of the gas hydrate stability zone (GHSZ) is the recycling of gas hydrate and free gas enhanced by high Neogene sedimentation rates in the region. Our model predicts the rapid development of secondary intrasalt minibasins situated on top of the allochthonous salt deposits which leads to significant sediment subsidence and an ensuing dislocation of the lower GHSZ boundary. Consequently, large amounts of gas hydrates located in the deepest parts of the basin dissociate and the released free methane gas migrates upward to recharge the GHSZ. In total, we have predicted the gas hydrate budget for the Green Canyon area that amounts to ∼3256 Mt of gas hydrate, which is equivalent to ∼340 Mt of carbon (∼7 × 1011 m3 of CH4 at STP conditions), and consists mostly of biogenic hydrates.

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“…However, the Gulf shoreline at that time stood well seaward and at significantly lower levels (Otvos, 2004b;Milliken et al, 2008;Simms et al, 2009 and several others). Dates 6.7-to-5.4 ka B.P.…”

Section: Shelby Lakementioning

confidence: 93%

Hurricane signatures and landforms—toward improved interpretations and global storm climate chronology

Otvos

2011

Sedimentary Geology

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Insights on a Proposed Mid-Holocene Highstand Along the Northwestern Gulf of Mexico from the Evolution of Small Coastal Ponds

Cited by 18 publications

References 60 publications

A decadally-resolved paleohurricane record archived in the late Holocene sediments of a Florida sinkhole

A decadally-resolved paleohurricane record archived in the late Holocene sediments of a Florida sinkhole

3‐D basin‐scale reconstruction of natural gas hydrate system of the Green Canyon, Gulf of Mexico

Hurricane signatures and landforms—toward improved interpretations and global storm climate chronology

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