Carbonate Sedimentation and Environments, Shark Bay, Western Australia

Logan, Brian W.; Davies, Graham; Read, J. Fred; Cebulski, Donald E.

doi:10.1306/m13369

Cited by 55 publications

(7 citation statements)

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“…Hamelin Pool, a large inverse estuary (Hetzel et al, 2015) in the south‐east of Shark Bay, is approximately 1400 km 2 (Jahnert & Collins, 2012). It is flanked to the east and south by the Carbla Plateau and to the west by the Nanga Peninsula (Figure 1) (Butcher et al, 1984; Hocking, 1987; Logan & Cebulski, 1970; Playford et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…The Hamelin Pool coastline is compartmentalised into north‐west and north‐east‐facing bights and north to north‐west‐facing embayments (Logan & Cebulski, 1970), separated by fault‐controlled headlands (Clark, 2010; Jahnert & Collins, 2012; Playford et al, 2013). Eliot et al (2011) place Hamelin Pool in the southern end of the L’Haridon primary coastal compartment, splitting Hamelin Pool into eastern and western secondary compartments and further identifying tertiary coastal compartments along the eastern coast separated by prominent headlands.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Circulation in Hamelin Pool is partially restricted from the rest of Shark Bay by the Faure Sill (Burling et al, 1999; Logan & Cebulski, 1970). The Faure Sill is a seagrass‐stabilised, channelised bank that progressively developed through the Holocene as sea‐level fell (Bufarale & Collins, 2015; Logan & Cebulski, 1970). The combination of sea‐level fall and bank development reduced oceanic circulation within Hamelin Pool which, combined with high evaporation rates, allowed the development of hypersaline conditions (Logan & Cebulski, 1970).…”

Section: Introductionmentioning

confidence: 99%

“…The Faure Sill is a seagrass‐stabilised, channelised bank that progressively developed through the Holocene as sea‐level fell (Bufarale & Collins, 2015; Logan & Cebulski, 1970). The combination of sea‐level fall and bank development reduced oceanic circulation within Hamelin Pool which, combined with high evaporation rates, allowed the development of hypersaline conditions (Logan & Cebulski, 1970). This hypersalinity resulted in restricted biological diversity within Hamelin Pool, supporting both the development of the extant benthic microbialites since approximately 2000 years ago (Chivas et al, 1990; Giusfredi, 2014; Jahnert & Collins, 2012; Morris et al, 2020; Playford et al, 2013) and the abundant development of the cockle Fragum eragatum since about 4500 years ago (Correia Baptista da Silva, 2014; Jahnert et al, 2012; Playford et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Impacts of Severe Tropical Cyclone Olwyn and the biogeomorphic response, Hamelin Pool, Shark Bay, Western Australia

Morris

Fearns

et al. 2022

The Depositional Record

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Storm disturbance and recovery of the peritidal benthic microbial ecosystem occurs as part of the natural climate regime in Shark Bay. However, tropical cyclone and winter storm frequency and intensity are known to be changing due to climate forcing. Presented here is an analysis of the biogeomorphic response of the benthic microbial ecosystem within the intertidal to upper subtidal zone and the beach face coquina deposits of Hamelin Pool, to the passage of Category 3 Severe Tropical Cyclone Olwyn (13 March 2015). Storm effects (initial response to 40 days post‐event) include: erosional sculpting of sediments, mats and structures; deposition and winnowing of sediments; accumulation of mucilaginous products into flocs, slurries and sludges; along with limited development of new coquina deposits in the beach face. Medium (15 months) term observations include: mat recovery and changes with transformation of mucilage deposits into new subtidal gelatinous mats, intertidal transitional mats and low‐elevation microbial structures. Observations suggest that this disturbance had both positive (the floc‐to‐mat biogeomorphic storm response) and negative feedbacks (enhanced bioturbation), which impact the development of stromatolite forming microbial mats and microbialite structures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Impacts of Severe Tropical Cyclone Olwyn and the biogeomorphic response, Hamelin Pool, Shark Bay, Western Australia

Morris

Fearns

et al. 2022

The Depositional Record

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Organomineralization processes in freshwater stromatolites: a living example from eastern Patagonia

Pacton

Hunger

Martinuzzi

et al. 2015

The Depositional Record

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Living stromatolites have been mostly described within shallow marine and (hyper)saline lacustrine environments. Southernmost South America lacks detailed investigations of these (organo)sedimentary buildups, particularly in regions experiencing extreme and variable environmental conditions. Here, we report and describe living freshwater stromatolites in the Maquinchao region, north-western Patagonia, Argentina. Fossil stromatolites characterized by globular and cauliflower shapes are also present in a continuous palaeoshoreline of a former lake at an altitude of 830 m, whereas their living counterparts only occur in the calm waters of sheltered or meandering sections of the Maquinchao River. The living stromatolites and their host waters have been sampled and studied using various chemical and microscopic techniques to better constrain the environmental versus biological factors controlling their development. Our results indicate that today stromatolites only proliferate in freshwater when Ca 2+ levels are high. A microscopic inspection of the living stromatolite mat indicates stronger photosynthetic activity in the upper green layer associated with crypto/ microcrystalline calcite (nanoglobules) compared to the lower beige-white biofilm. This biofilm contains more low-Mg calcite (rhombohedra) precipitates, which can form millimetre-sized aggregates in the underlying anoxic layer. Although sulphate-reducing bacteria are living in the entire mat, they appear more abundant and widely distributed in the lower beige-white layer and are always associated with Mg calcite. Low salinity and low-turbidity water along with microbial (photosynthetic and heterotrophic) activity are the most important factors promoting low-Mg calcite precipitation in the Maquinchao Basin. These conditions are very different from those proposed for recently described lacustrine stromatolites at high altitude in the subtropical and tropical Andes as well as in Chilean Patagonia. Hence, all these observations in modern freshwater stromatolites show the importance of geomicrobiological studies in identifying proxies of the hydrological conditions prevailing during their formation.

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Prograded foredunes of Western Australia's macro‐tidal coast – implications for Holocene sea‐level change and high‐energy wave impacts

Engel

May

Scheffers

et al. 2014

Earth Surf Processes Landf

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The Holocene evolution of the Canning Coast of Western Australia has largely been overlooked so far mainly due to its remoteness and low population density. We report on new data from a sequence of foredunes inside the macro-tidal Admiral Bay, 110 km southwest of Broome. Based on sediment cores, differential global positioning system (dGPS)-based elevation transects, and stratigraphical analyses on outcrops of the relict foredunes, we aim at reconstructing Holocene coastal changes and relative sea levels (RSLs), as well as identifying and dating imprints of extreme-wave events. Sedimentary analyses comprise the documentation of bedding structures, foraminiferal content and macrofaunal remains, grain size distribution, and organic matter. The chronological framework is based on 26 carbon-14 accelerator mass spectrometry ( 14 C-AMS) datings. Marine flooding of the pre-Holocene surface landward of the 2.5 km-wide foredune barriers occurred 7400-7200 cal BP, when mangroves colonized the area. After only 200-400 years, a high-energy inter-tidal environment established and prevailed until c. 4000 cal BP, before turning into the present supralittoral mudflat. During that time, coastal regression led to beach progradation and the formation of aligned foredunes. Drivers of progradation were a stable RSL or gradual RSL fall after the mid-Holocene and a positive sand budget. The foredunes overlie upper beach deposits located up to >2 m above the present upper beach level and provide evidence for a higher mid-Holocene RSL. Discontinuous layers of coarse shells and sand are intercalated in the foredunes, indicating massive coastal flooding events. One such layer was traced over three dune ridges and dated to c. 1700-1550 cal BP. However, it seems that most tropical cyclones induce net erosion rather than deposition at aligned foredunes and thus, they are only suitable for reconstructing temporal variability if erosional features or sedimentation reliably tied to these events can be identified and dated accurately.

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Carbonate Sedimentation and Environments, Shark Bay, Western Australia

Cited by 55 publications

References 0 publications

Impacts of Severe Tropical Cyclone Olwyn and the biogeomorphic response, Hamelin Pool, Shark Bay, Western Australia

Impacts of Severe Tropical Cyclone Olwyn and the biogeomorphic response, Hamelin Pool, Shark Bay, Western Australia

Organomineralization processes in freshwater stromatolites: a living example from eastern Patagonia

Prograded foredunes of Western Australia's macro‐tidal coast – implications for Holocene sea‐level change and high‐energy wave impacts

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