Lacustrine Sedimentology, Stratigraphy and Stable Isotope Geochemistry of the Tipton Member of the Green River Formation

Graf, Jennifer Walker; Carroll, Alan R.; Smith, M. Elliot

doi:10.1007/978-94-017-9906-5_3

Cited by 11 publications

(15 citation statements)

References 49 publications

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“…Dolomitic samples have average δ 13 C values 1.5‰ higher and δ 18 O values 6‰ higher than the mean of all samples with calcitic mineralogy (Figures 6 and 8). A similar trend is also observed in Green River Formation lacustrine strata, where values for dolomitic samples are 3‰ higher than calcite samples (i.e., Doebbert, 2006;Graf et al, 2015). This likely reflects enhanced fractionation by dolomite (Fritz & Smith, 1970), but could also result from dolomite being preferentially precipitated from lake water during more evaporative periods.…”

Section: Lacustrine Carbonate Isotope Geochemistrysupporting

confidence: 71%

Geochemical Evolution of Eocene Lakes in the Nevada Hinterland of the North American Cordillera

Canada

Cassel

Smith

2021

Geochem Geophys Geosyst

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Section: Lacustrine Carbonate Isotope Geochemistrysupporting

confidence: 71%

Geochemical Evolution of Eocene Lakes in the Nevada Hinterland of the North American Cordillera

Canada

Cassel

Smith

2021

Geochem Geophys Geosyst

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“…For example, it is not clear what the water chemistry was when the tufa mounds in Pyramid and Searles Lake formed; they formed at highstands, and, although the lake apparently remained closed during those highstands, the water presumably was fresher (Benson 1994). The same is true of the stromatolites in the Green River Formation (Graf et al 2015;Rhodes and Carroll 2015). In the Navajo Sandstone, although very late stages of some of the interdune lakes were clearly saline (e.g., the lower carbonate unit at site 1 and others reported by Parrish et al 2017), there is no evidence that the lakes were anything other than freshwater or slightly alkaline when the tufa mounds were forming and before the lakes completely desiccated.…”

Section: Navajo Sandstone Carbonate Mounds As Subaerial Springsmentioning

confidence: 99%

Petrography and Environmental Interpretation of Tufa Mounds and Carbonate Beds In the Jurassic Navajo Sandstone of Southeastern Utah, U.S.A.

Dorney

Parrish

Chan

et al. 2017

Journal of Sedimentary Research

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Carbonate deposits in the Jurassic Navajo Sandstone of Utah reflect deposition in interdune lakes and springs. Interdune-lake deposits consist of flat-lying carbonate units. Springs formed tufa mounds that are interpreted as subaerial, ambient-temperature, artesian-spring deposits. In the first systematic study of the petrography of the carbonate deposits in the Navajo Sandstone, eleven facies were identified in several flat-lying carbonate deposits and two tufa mounds. Fenestral mudstone and peloidal facies dominate the lacustrine deposits, whereas thrombolitic mudstone characterizes the mounds. The biota consists of ostracodes, charophytes, fish, mollusks, a possible freshwater sponge, trace fossils, and fragments of vascular plants. Features resulting from penecontemporaneous weathering provide evidence of episodic exposure of the lacustrine carbonate beds during deposition and formation of the tufa mounds under subaerial conditions. Although carbonate deposits are not rare in eolian systems, few have been studied in detail; comparisons between these and the Navajo Sandstone carbonate deposits reveal some characteristics that may be unique to the latter.

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“…Organic-rich mudstones deposited in lacustrine basins can record continental paleoclimate and paleoenvironment (e.g., Anderson and Dean, 1988;Bonk et al, 2014;Aswasereelert et al, 2013;Chamberlain et al, 2013;Wang et al, 2015b). Because lacustrine basins are relatively restricted, climate changes in lake catchments may influence the balances of evaporation and freshwater by driving perturbations in lake hydrological condition (Carroll and Bohacs, 1999;Jiang et al, 2007;Kent-Corson et al, 2010;Chamberlain et al, 2013;Vázquez-Urbez et al, 2013), and cause changes in lake water chemistry and productivity, and terrigenous input, which in turn influences depositional processes in lake basins (Aswasereelert et al, 2013;Doebbert et al, 2010;Graf et al, 2015;Norsted et al, 2015;. Despite the importance of lacustrine mudstone, the extraction of useful paleoclimate and paleoenvironment information from lacustrine mudstone is often hampered by tectonic influence on lake basin development and depositional processes (e.g., Carroll and Bohacs, 1999;Pietras et al, 2003;Hao et al, 2011), and lack of appropriate techniques for paleoclimate and paleoenvironment reconstructions .…”

Section: Introductionmentioning

confidence: 99%

Climate-driven paleolimnological change controls lacustrine mudstone depositional process and organic matter accumulation: Constraints from lithofacies and geochemical studies in the Zhanhua Depression, eastern China

Fan

et al. 2016

International Journal of Coal Geology

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The influence of paleoclimate on the depositional process of lacustrine mudstone and organic matter accumulation is important to both paleoclimate reconstruction and hydrocarbon exploration. Here we study the lower third Member (Es3L) of the Eocene Shahejie Formation in the Zhanhua Depression, Bohai Bay Basin, eastern China in order to understand how paleoclimate influenced depositional processes and organic matter accumulation of lacustrine organic-rich mudstone. By combining detailed core descriptions and microscopic observations, and high-resolution mineralogical and geochemical analyses, we identified two major lithofacies, including massive calcareous mudstone and laminated calcareous mudstone, from the Luo 69 drilling core. The sedimentologic observations and changes of geochemical proxies, including detritus index, Ln(Al2O3/Na2O), B/Ga, and V/(V+Ni), suggest that the massive calcareous mudstone was deposited in a small, shallow, salt lake that was dysoxic-anoxic, and the paleoclimate in the lake catchment was cool and arid, and the laminated calcareous mudstone was deposited in a large and deep stratified lake, which has anoxic, highly saline bottom and oxic, less saline surface water, and the lake catchment was more humid and warm. The dominant lithofacies changed from laminated calcareous mudstone to massive calcareous mudstone in the studied core, suggesting that the lake became shallower and smaller when the paleoclimate 3 became cooler and drier through time. Such a climate trend may be a response to global cooling during the middle Eocene. The average total organic content (TOC) in both lacustrine highstand and lowstand are comparable even though the lake water chemistry and amount of terrigenous input are different. We infer that the accumulation of organic matter within the lacustrine highstand was controlled by the combination of primary productivity, carbonate production, and preservation in anoxic bottom water, while accumulation within lacustrine lowstand was only controlled by primary productivity.

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Lacustrine Sedimentology, Stratigraphy and Stable Isotope Geochemistry of the Tipton Member of the Green River Formation

Cited by 11 publications

References 49 publications

Geochemical Evolution of Eocene Lakes in the Nevada Hinterland of the North American Cordillera

Geochemical Evolution of Eocene Lakes in the Nevada Hinterland of the North American Cordillera

Petrography and Environmental Interpretation of Tufa Mounds and Carbonate Beds In the Jurassic Navajo Sandstone of Southeastern Utah, U.S.A.

Climate-driven paleolimnological change controls lacustrine mudstone depositional process and organic matter accumulation: Constraints from lithofacies and geochemical studies in the Zhanhua Depression, eastern China

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