Benthic cyanobacteria and their influence on the sedimentary dynamics of peritidal depositional systems (siliciclastic, evaporitic salty, and evaporitic carbonatic)

Noffke, Nora; Gerdes, Gisela; Klenke, Thomas

doi:10.1016/s0012-8252(02)00158-7

Cited by 144 publications

(113 citation statements)

References 43 publications

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“…There is also agreement with findings from marine environments, where substantial research into the stabilisation of sediments by photoautotrophs has been conducted (e.g. Yallop et al, 1994;Sutherland et al, 1998a, b, Noffke et al, 2001, 2003Tolhurst et al, 2002).…”

Section: Environmental Influences Over Aggregate Size and Stabilitysupporting

confidence: 84%

A spatial investigation of the environmental controls over cryoconite aggregation on Longyearbreen glacier, Svalbard

et al. 2014

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Abstract.A cryoconite granule is a near-spherical aggregation of biota and abiotic particles found upon glacier surfaces. Recently, microstructural studies have revealed that photosynthetic microorganisms and extracellular polymeric substances (EPS) are omnipresent within cryoconite granules and have suggested their importance as biological "forming factors". To assess these forming factors, and their biological control over aggregate size and stability, across a typical Arctic valley glacier surface, a suite of rapid, spectrophotometric, microplate methods were utilised. Subsequent spatial mapping of these data revealed distinct patterns. Labile carbohydrates were found to increase up-glacier, suggestive of EPS production for cryoprotection and nutrient assimilation. Conversely, pigment concentrations were found to increase towards the glacier terminus and valley sides, suggestive of allochthonous input, a general reduction in physical disturbance and of the build-up of photosynthetic pigments and less labile cyanobacterial sheath material. Aggregate size was found to increase towards the glacier edges, linked to the input of particulate matter from the valley sides, and to broadly increase down-glacier, in the same way as pigment concentrations. Statistical analyses of transect data revealed that the photoautotrophic count and carbohydratechlorophyll ratio of the cryoconite sampled could explain 83 % of the measured variation in aggregate size and stability. Considering solely aggregate size, the number and length of photoautotrophic filaments could explain 92 % of the variation in this parameter. These findings demonstrate the twodimensional distribution of key biological controls upon cryoconite aggregation for the first time, and highlight the importance of filamentous cyanobacteria and EPS production to the development of stable cryoconite granules.

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Section: Environmental Influences Over Aggregate Size and Stabilitysupporting

confidence: 84%

A spatial investigation of the environmental controls over cryoconite aggregation on Longyearbreen glacier, Svalbard

et al. 2014

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“…The cohesion is attributable to extracellular polymeric substances from microbiota and to the grain-binding effect of microbial filaments (cf. Noffke et al, 2003). The pyrite layer immediately underneath the mlc (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Wrinkle structures on sandstone have been variously attributed to gentle wave action on mats (e.g., [Hagadorn and Bottjer, 1997] and [Bouougri and Porada, 2002]), loading pressure and dewatering of mats during burial (Noffke et al, 2003) and gas accumulation underneath a mat . Although it is difficult to choose one or another of these mechanisms to explain ancient wrinkle structures, the unidirectional asymmetry exhibited by many of the wrinkle structures in the Sonia Sandstone are best explained by openUP (April 2008) the first model.…”

Section: Discussionmentioning

confidence: 99%

“…Microbiota lend cohesiveness to clastic sediments, especially sand and reduce its erodibility ( [Schieber, 1998], [Schieber, 1999], [Schieber, 2004], [Gehling, 1999], , [Gerdes et al, 2000], [Noffke et al, 2001], [Noffke et al, 2002], [Noffke et al, 2003], [Sarkar et al, 2004], and [Sarkar et al, 2006]); this influence must have been commonplace across many environmental boundaries during the Proterozoic. Primary bed-surface structures, even those with little preservation potential, are thus likely to be very well preserved in openUP (April 2008) Proterozoic sandstone formations.…”

Section: Introductionmentioning

confidence: 99%

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Microbial mat mediated structures in the Ediacaran Sonia Sandstone, Rajasthan, India, and their implications for proterozoic sedimentation

Sarkar

Bose

Samanta

et al. 2008

Precambrian Research

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A strong influence of microbial mats on the physics of Neoproterozoic sedimentation is explored within a 60 m-thick stratigraphic interval within the Sonia Sandstone, Jodhpur Group, western India. This marine interval is bounded by two terrestrial units, its base being marked by a transgressive lag and the top by an unconformity. Progradation from upper neritic, above fair-weather wave base to supralittoral settings was later terminated by a transgression; deposits of lower shoreface-upper shoreface transition thus overlie supralittoral aeolian sandstones, the basal contact of the former deposits being marked by another transgressive lag.A wide spectrum and abundant examples of microbial mat or mat-derived structures supports unusual cohesiveness within granular sand deposited in a high-energy marine environment. The cohesiveness is manifested in abundant preservation of several delicate primary structures and also in their replication in overlying beds, even after they were subjected to high-energy currents.A low rate of sedimentation and severely restricted sediment reworking resulted from prolific mat growth, and consequent depletion in the sediment budget was manifested in openUP (April 2008) bedform migration and evolution. These factors could also have influenced the sequencebuilding pattern in a distinctive way, as is already reported from several Meso-and Neoproterozoic successions. Ubiquitous mat growth thus had the potential to impart significant distinctions to Proterozoic clastic sedimentary successions.

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“…Kinneyia outcrops have been dated from as early as 2.9 Ga ago (Noffke et al, 2003a), and occur at virtually all times well into the Mesozoic. In the course of the Mesozoic, they gradually become more scarce in the fossil record, with the latest representatives being reported from the Jurassic.…”

Section: Kinneyiamentioning

confidence: 99%

Kinneyia: A Flow-Induced Anisotropic Fossil Pattern from Ancient Microbial Mats

et al. 2016

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Kinneyia is the commonly used term to describe a class of trace fossil that is strongly associated with microbial mats. The appearance of Kinneyia (or wrinkle structures) in the fossil record has recently led to a number of possible mechanisms being proposed to explain its formation. Here, we outline, and critically compare, three of these models, involving formation of the characteristic ripple structures (i) in mats over liquefied sediment, (ii) by oscillatory flow of microbial aggregates, and (iii) by a Kelvin-Helmholtz instability of the mat surface. Of these models, our study shows that the hydrodynamic instability compares most favorably with the corresponding structures in the fossil record. Implications for the conditions under which the fossils formed are then further discussed.

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Benthic cyanobacteria and their influence on the sedimentary dynamics of peritidal depositional systems (siliciclastic, evaporitic salty, and evaporitic carbonatic)

Cited by 144 publications

References 43 publications

A spatial investigation of the environmental controls over cryoconite aggregation on Longyearbreen glacier, Svalbard

A spatial investigation of the environmental controls over cryoconite aggregation on Longyearbreen glacier, Svalbard

Microbial mat mediated structures in the Ediacaran Sonia Sandstone, Rajasthan, India, and their implications for proterozoic sedimentation

Kinneyia: A Flow-Induced Anisotropic Fossil Pattern from Ancient Microbial Mats

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