The Late Eocene ‘Whiskey Creek’ methane-seep deposit (western Washington State)

Goedert, James L.; Thiel, Volker; Schmale, Oliver; Rau, WW; Michaelis, Walter; Peckmann, Jörn

doi:10.1007/bf02667541

Cited by 67 publications

(30 citation statements)

References 63 publications

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“…The ca. 50 myr range of C. major matches some other seep−restricted molluscs, e.g., Conchocele bisecta (Conrad, 1849), which ranges from the Eocene to the Recent (e.g., Goedert et al 2003;. However, further investiga− tions of the morphology and ontogeny of additional C. major specimens may reveal that the characters now considered to be of an interspecific variation actually reflect a presence of dif− ferent species.…”

Section: Fig 9h Cas 72536mentioning

confidence: 77%

Paleoecology and Evolutionary Significance Of An Early Cretaceous Peregrinella-Dominated Hydrocarbon-Seep Deposit On The Crimean Peninsula

Kiel¹,

Peckmann²

2008

PALAIOS

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Section: Fig 9h Cas 72536mentioning

confidence: 77%

Paleoecology and Evolutionary Significance Of An Early Cretaceous Peregrinella-Dominated Hydrocarbon-Seep Deposit On The Crimean Peninsula

Kiel¹,

Peckmann²

2008

PALAIOS

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“…These microscopic and geochemical results arguing against a microbially mediated, methane-induced cementation are supported by the lack of other indicators of hydrocarbon seep deposits such as primary clotted microfabrics and stromatactoid cavities , calcified bacterial mats (Aharon 1994), and associated chemosynthetic seep communities (Paull et al 1984;Aharon 1994;Peckmann et al 1999;Goedert et al 2003).…”

Section: Organic Controlmentioning

confidence: 89%

“…10), suggesting that the carbonates are in isotopic equilibrium with the ambient waters, therefore indicating in situ lithification of the limestones (Milliman 1974). The positive δ 13 C values exclude an introduction of diagenetic CO 2 derived from bacterial oxidation of organic matter or from microbial sulphate reduction combined with anaerobic methane oxidation, since Recent and ancient carbonate precipitates fuelled by methane of biogenic and/or thermogenic sources are characterised by unusually negative δ 13 C values (Milliman 1974;Peckmann et al 1999;Aharon 2000;Peckmann et al 2001Peckmann et al , 2002Michaelis et al 2002;Goedert et al 2003;Peckmann et al 2003;Buggisch and Krumm 2005). The lighter values outside of the cluster in the diagram (Fig.…”

Section: Organic Controlmentioning

confidence: 93%

From sediment to rock: diagenetic processes of hardground formation in deep-water carbonate mounds of the NE Atlantic

Noé

Titschack

Freiwald

et al. 2006

Facies

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Modern cool-water carbonate mounds topped by corals form an extended reef belt along the NW European continental margin at 200-1200 m water depth. An essential element of mound growth are hardgrounds which provide a stable substratum for mound-building invertebrate colonisation and stabilise the inclined mound flanks. Evaluating the degree of lithification and the slope stability against erosion represents an important task within the ESF programme MOUNDFORCE under the umbrella of EUROMARGINS. Sampling of hardgrounds during RV Meteor cruises M61-1 and -3 in 2004 by means of the IFM-GEOMAR TV-grab and the Bremen ROV QUEST focused on carbonate mounds of the Porcupine Seabight and northwestern Rockall Bank off Ireland. Lithified carbonates of mid-Pleistocene age were exhumed during the Holocene and are now exposed on the top and flanks of numerous carbonate mounds showing a patchy to dense colonisation by living corals and associated invertebrates. The sediments, composed of foraminiferal-nannoplankton oozes and admixed mound-derived invertebrate skeletons, range from partly lithified chalks to dense micritic limestones. These wackestones to packstones clearly differ from bacterially induced authigenic carbonate crusts typical of hydrocarbon seep settings by showing current-induced sedimentary structures, a non-luminescing matrix indicating oxic pore fluids, and a marine isotopic signature lacking any depleted carbon regime which is typical of anaerobic methane oxidation. The carbonate lithification is driven by carbonate ion diffusion from supersaturated seawater into the pore fluids S. Noé ( ) · W.-C. Dullo in the studied areas. Vigorous bottom currents were the ultimate control not only of carbonate cementation by enhancing the diffusion process and supporting a pumping mechanism, but also of hardground formation and mound shaping by exhuming lithified carbonates and preventing finegrained sediment accumulation at the downslope mound flanks.

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“…Seep carbonates are relatively abundant in the Phanerozoic rock record (see review by Campbell, 2006). These carbonate deposits within largely siliciclastic successions show 13 C depletion typical of modern seep carbonates (Campbell and Bottjer, 1995;Goedert et al, 2003;Gill et al, 2005). Distinctive macrofaunal assemblages are thought to represent communities of seep-adapted invertebrates, such as endosymbiont-hosting bivalves and tube worms (Taviani, 1994;Squires, 1995;Goedert and Kaler, 1996).…”

Section: ‰ Chemotrophic Microbial Matsmentioning

confidence: 99%

Chemotrophic Microbial Mats and Their Potential for Preservation in the Rock Record

et al. 2009

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Putative microbialites are commonly regarded to have formed in association with photosynthetic microorganisms, such as cyanobacteria. However, many modern microbial mat ecosystems are dominated by chemotrophic bacteria and archaea. Like phototrophs, filamentous sulfur-oxidizing bacteria form large mats at the sediment= water interface that can act to stabilize sediments, and their metabolic activities may mediate the formation of marine phosphorites. Similarly, bacteria and archaea associated with the anaerobic oxidation of methane (AOM) catalyze the precipitation of seafloor authigenic carbonates. When preserved, lipid biomarkers, isotopic signatures, body fossils, and lithological indicators of the local depositional environment may be used to identify chemotrophic mats in the rock record. The recognition of chemotrophic communities in the rock record has the potential to transform our understanding of ancient microbial ecologies, evolution, and geochemical conditions. Chemotrophic microbes on Earth occupy naturally occurring interfaces between oxidized and reduced chemical species and thus may provide a new set of search criteria to target life-detection efforts on other planets.

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The Late Eocene ‘Whiskey Creek’ methane-seep deposit (western Washington State)

Cited by 67 publications

References 63 publications

Paleoecology and Evolutionary Significance Of An Early Cretaceous Peregrinella-Dominated Hydrocarbon-Seep Deposit On The Crimean Peninsula

Paleoecology and Evolutionary Significance Of An Early Cretaceous Peregrinella-Dominated Hydrocarbon-Seep Deposit On The Crimean Peninsula

From sediment to rock: diagenetic processes of hardground formation in deep-water carbonate mounds of the NE Atlantic

Chemotrophic Microbial Mats and Their Potential for Preservation in the Rock Record

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