Dating of anatase-forming diagenetic reactions in Rotliegend sandstones of the North German Basin

Синдерн, Свен; Havenith, V.; Gerdes, Axel; Meyer, Franz Michael; Adelmann, Dirk; Hellmann, André

doi:10.1007/s00531-019-01705-x

Cited by 9 publications

(8 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under the relatively low temperature and pressure conditions of burial diagenesis, Ti is extremely insoluble and therefore often assumed to be immobile. However, there is abundant evidence, in addition to the authigenic titanium‐bearing minerals observed in our study, that Ti is mobilized in the presence of organic acids (Hays et al., 1994; Parnell, 2004; Pe‐Piper et al., 2011; Schulz et al., 2016; Sindern et al., 2019). Schulz et al.…”

Section: Discussionmentioning

confidence: 53%

Characteristics and Consequences of Red Bed Bleaching by Hydrocarbon Migration: A Natural Example From the Entrada Sandstone, Southern Utah

Bailey

Drake

Whitehouse

et al. 2022

Geochem Geophys Geosyst

View full text Add to dashboard Cite

Extensive regions of yellow and white (“bleached”) sandstones within the terrestrial Jurassic red bed deposits of the Colorado Plateau reflect widespread interaction with subsurface reduced fluids which resulted in the dissolution of iron‐oxide grain coatings. Reduced fluids such as hydrocarbons, CO2, and organic acids have been proposed as bleaching agents. In this study, we characterize an altered section of the Slick Rock member of the Jurassic Entrada Sandstone that exposes bleached sandstone with bitumen‐saturated pore spaces. We observe differences in texture, porosity, mineralogy, and geochemistry between red, pink, yellow, and gray facies. In the bleached yellow facies we observe quartz overgrowths, partially dissolved K‐feldspar, calcite cement, fine‐grained illite, TiO2‐minerals, and pyrite concretions. Clay mineral content is highest at the margins of the bleached section. Fe2O3 concentrations are reduced up to 3× from the red to gray facies but enriched up to 50× in iron‐oxide concretions. Metals such as Zn, Pb, and rare‐earth elements are significantly enriched in the concretions. Supported by a batch geochemical model, we conclude the interaction of red sandstones with reduced hydrocarbon‐bearing fluids caused iron‐oxide and K‐feldspar dissolution, and precipitation of quartz, calcite, clay, and pyrite. Localized redistribution of iron into concretions can account for most of the iron removed during bleaching. Pyrite and carbonate stable isotopic data suggest the hydrocarbons were sourced from the Pennsylvanian Paradox Formation. Bitumen in pore spaces and pyrite precipitation formed a reductant trap required to produce Cu, U, and V enrichment in all altered facies by younger, oxidized saline brines.

show abstract

Section: Discussionmentioning

confidence: 53%

Characteristics and Consequences of Red Bed Bleaching by Hydrocarbon Migration: A Natural Example From the Entrada Sandstone, Southern Utah

Bailey

Drake

Whitehouse

et al. 2022

Geochem Geophys Geosyst

View full text Add to dashboard Cite

show abstract

“…The diverse mineralogy of MH M indicates that the pore fluid composition changed continuously during diagenesis. The phosphate precipitation sequence records these changes that are likely related to, e.g., the specific surface area of primary minerals, primary mineral dissolution rates and sequence, and kerogen maturation (Curtis 1983;Weibel and Friis 2004;Wilson 2004;Sindern et al 2019). Among the detrital minerals, those with a large specific surface area are most likely to be preserved as negative crystal shape, e.g., associated with mantienneite (Fig.…”

Section: Element Transport and Phosphate Precipitation In The Marker ...mentioning

confidence: 99%

“…Diagenetic processes alter the mineral components of the marker horizon as well as the organic material. Kerogen maturation and hydrocarbon mobilization is an omnipresent process in the Messel oil shale and can play an important role for pore fluid composition, mineral dissolution/precipitation, and element mobility (Curtis 1983;Waldmann and Gaupp 2016;Sindern et al 2019). High molecular weight organic matter readily loses carbon dioxide, which is soluble and dissociates (Curtis 1983).…”

Section: Element Transport and Phosphate Precipitation In The Marker ...mentioning

confidence: 99%

“…4d) could be remnants after dissolution of such detrital minerals. Similarly to aluminum, Ti is usually fluid immobile in low-temperature geological systems, but its mobility increases considerably in low pH fluids rich in dissolved organic compounds (Hausrath et al 2009;Fuchs et al 2015;Schulz et al 2016;Liu et al 2019;Sindern et al 2019). Kerogen maturation likely generates an acidic, reducing fluid, which also intensifies the leaching of detrital minerals, e.g., ilmenite (Weibel and Friis 2004).…”

Section: Mantienneite Authigenesismentioning

confidence: 99%

“…Kerogen maturation likely generates an acidic, reducing fluid, which also intensifies the leaching of detrital minerals, e.g., ilmenite (Weibel and Friis 2004). However, an increased titanium mobility at low pH, at least on the microscale, is commonly associated with oxidizing conditions (Weibel 1998;Sindern et al 2019). Further, the presence of ferric Fe in mantienneite and precipitation of iron oxide/hydroxide indicates oxidizing conditions during mantienneite formation.…”

Section: Mantienneite Authigenesismentioning

confidence: 99%

See 2 more Smart Citations

Lithogenesis of a phosphatized tephra marker horizon in the Eocene Messel maar lake

Liesegang

Wuttke

2022

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

The bituminous black pelite of the Messel UNESCO world heritage site is an exceptional palaeobiological archive from the Middle Eocene greenhouse climate. The pronounced homogeneity of the annually laminated pelite through a time interval of 640 kyr complicates the relative stratigraphic classification of fossil remains and is, thus, largely dependent on particular marker horizons within the uniform sedimentary column. We analyzed the most prominent marker horizon M using petrographic microscopy, X-ray powder diffraction, and electron probe microanalyses to identify and characterize its structure and phosphate-dominated mineralogy. Based on our analytical data, we suggest that this phosphatic marker horizon resulted from the exceptional combination of external tephra enclosed in bacteria and algae-rich layers, producing a coupled phosphorus and cation diffusion during diagenesis. Mantienneite (KMg2Al2Ti(PO4)4(OH)3 • 15H2O) is documented for the first time in the Messel fossil deposit. The diagenetic succession of messelite, montgomeryite, and mantienneite precipitation reflects the internal heterogeneities in primary mineral composition of an ash layer. Kerogen maturation and hydrocarbon migration produced acidic, reducing pore fluids with high P concentration, which enhanced the mobility of Al and Ti. The mantienneite-forming reaction marks the change from a regime of reducing to oxidizing conditions. With the deposition and diagenesis of the marker horizon M, a singular event is preserved in a sedimentary sequence otherwise regarded as largely uniform over a time span of about 640 kyr.

show abstract

Controls on compactional behavior and reservoir quality in a Triassic Buntsandstein reservoir, Upper Rhine Graben, SW Germany

Busch

Adelmann²,

Herrmann³

et al. 2022

Marine and Petroleum Geology

View full text Add to dashboard Cite

Dating of anatase-forming diagenetic reactions in Rotliegend sandstones of the North German Basin

Cited by 9 publications

References 63 publications

Characteristics and Consequences of Red Bed Bleaching by Hydrocarbon Migration: A Natural Example From the Entrada Sandstone, Southern Utah

Characteristics and Consequences of Red Bed Bleaching by Hydrocarbon Migration: A Natural Example From the Entrada Sandstone, Southern Utah

Lithogenesis of a phosphatized tephra marker horizon in the Eocene Messel maar lake

Controls on compactional behavior and reservoir quality in a Triassic Buntsandstein reservoir, Upper Rhine Graben, SW Germany

Contact Info

Product

Resources

About