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Atlas of Microbial Mat Features Preserved within the by Juergen Schieber, Pradip K. Bose, P.G. Eriksson, Santanu PDF

By Juergen Schieber, Pradip K. Bose, P.G. Eriksson, Santanu Banerjee, Subir Sarkar, Wladyslaw Altermann, Octavian Catuneanu

ISBN-10: 0080549306

ISBN-13: 9780080549309

ISBN-10: 0444528598

ISBN-13: 9780444528599

Drawing on a mix of contemporary occurrences and certain historic opposite numbers, this atlas is a treatise of mat-related sedimentary positive factors that one may perhaps anticipate to work out in historic terrigenous clastic sedimentary successions. by way of combining sleek and historical examples, the relationship is made to most probably formative techniques and the usage of those positive factors within the interpretation of historical sedimentary rocks.

* the 1st complete compilation of microbial mat features/structures preserved within the sliciclastic rock record
* prime quality, complete colour images totally aid the text
* sleek and historical examples attach the formative procedures and usage of mat-related beneficial properties within the interpretation of sedimentary rocks

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Read Online or Download Atlas of Microbial Mat Features Preserved within the Siliciclastic Rock Record (Atlases in Geoscience, Volume 2) PDF

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Extra resources for Atlas of Microbial Mat Features Preserved within the Siliciclastic Rock Record (Atlases in Geoscience, Volume 2)

Example text

B) Close-up of elongated spindle-like crack, margins rolled-up (knife is 20 cm long). Photo: Nora Noffke. (C) Surface patterns of a desiccated and widely cracked microbial mat loosely attached to the substrate, polygon margins rolled-up after drying (lens cap = 5 cm in diameter). -E. Reineck. (D) Close-up of C: crack margins giving rise to mat curls. -E. Reineck; modified after photo published in Gerdes et al. (1993). (E) Jelly surficial biofilm has cracked due to drying; gas bubbles indicate metabolic activity of mat-forming organisms (similar occurrences revealed contents of CO2 and CH4 within the bubbles; J.

1990). In Figure 2-4-3, mats are flooded and non-mineralised prior to and during deformation due to gas pressure. Gas diffuses from deeper buried organic deposits or mats toward the surface where cohesive microbial tissues retard the exchange through the mat–water interface. Hummocks may rise up convexly over selective vents (Figures 2-4-3A to -4-3D). Subaerial exposure supports gypsum and halite encrustation, possibly also forced by evaporative pumping (Figures 2-4-3D to -4-3H). If domes do not experience salt encrustation, continuous gas concentration beneath the surface mat may increase the tension along weak zones, establishing circular cracks at transitions from the planar to the domed mat (Figure 2-4-3B).

D) Similar three-dimensional structures building over the surface of hypersaline shallow water mats. In biofilms coating bubbles, diatoms are abundant. Reticulate patterns cover bubble surfaces. Deeper holes (centre) favour growth of green-pigmented filamentous mats. -E. Krumbein. Structures Left by Modern Microbial Mats in Their Host Sediments 21 Figure 2-2-1: Continued. (E) Benthic microbial mats projecting into the water column of a mangal pool using their own metabolic products (bubbles, scums, slimes, flocs) as interfaces for colonisation.

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Atlas of Microbial Mat Features Preserved within the Siliciclastic Rock Record (Atlases in Geoscience, Volume 2) by Juergen Schieber, Pradip K. Bose, P.G. Eriksson, Santanu Banerjee, Subir Sarkar, Wladyslaw Altermann, Octavian Catuneanu


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