Growth and longevity of Lithophaga lithophaga: what can we learn from shell structure and stable isotope composition?

Peharda, Melita; Puljas, Sanja; Chauvaud, Laurent; Schöne, Bernd R.; Ezgeta-Balić, Daria; Thébault, Julien

doi:10.1007/s00227-015-2690-0

Cited by 21 publications

(12 citation statements)

References 47 publications

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“…Associated with the marine terrace deposits are (a) palaeoshorelines, located up-dip from the terrace deposits, defined by palaeo-sea-cliffs cut into bedrock limestones, marked by shoreline notches lined with lithophagid borings and other shoreline fauna (algal encrustations, gastropods, echinoderms, bivalves and, rarely, corals), and (b) wave-cut platforms, that are the along strike correlatable surfaces to marine terrace deposits, characterised by erosive surfaces marked with millholes that are in turn marked by lithophagid borings. The borings are between 3-9 cm deep when formed (Peharda et al, 2015), though research by Devescovi and Ivesa, (2008) suggest a value closer to 6 cm is common, so their preservation with depths of a few centimetres indicates minimal erosion since their formation.…”

Section: Crete Geology and Tectonicsmentioning

confidence: 92%

Temporally constant Quaternary uplift rates and their relationship with extensional upper-plate faults in south Crete (Greece), constrained with 36Cl exposure dating.

Robertson¹,

Meschis²,

Roberts³

et al. 2019

Preprint

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Preserved sets of marine terraces and palaeoshorelines above subduction zones provide an opportunity to explore the long-term deformation that occurs as a result of upper-plate extension. We investigate uplifted palaeoshorelines along the South Central Crete Fault and over its western tip, located above the Hellenic Subduction Zone, in order toderive uplift rates and examine the role that known extensional faults contribute to observed coastal uplift. We have mapped palaeoshorelines and successfully dated four Late-Quaternary wave-cut platforms using in-situ 36Cl exposure dating. These absolute ages are used to guidea correlation of palaeoshorelines with Quaternary sea-level highstands from 76.5 to ~900 ka; the results of which suggest that uplift rates vary along fault strikes but have been constant for up to 600 ka in places. Correlation of palaeoshorelines across the SCCF results in a throw-rate of 0.41 mm/yr and, assuming repetition of 1.1 m slip events, a fault-specific earthquake recurrence interval of approximately 2700 years. Elastic-half space modellingimplies that coastal uplift is related to offshore upper-plate extensional faults. These faults may be responsible for perturbing the uplift rate signals in the south central Crete area. Our findings suggest that where uplifted marine terraces are used to make inferences about the mechanisms responsible for uplift throughout the Hellenic Subduction Zone, and other subduction zones worldwide, the impact of upper-plate extensional faults over multipleseismic cycles should also be considered.

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Section: Crete Geology and Tectonicsmentioning

confidence: 92%

Temporally constant Quaternary uplift rates and their relationship with extensional upper-plate faults in south Crete (Greece), constrained with 36Cl exposure dating.

Robertson¹,

Meschis²,

Roberts³

et al. 2019

Preprint

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show abstract

“…We use the approach outlined in Robertson et al (2019) to identify surfaces that have experienced minimal erosion based on the presence of preserved lithophagid borings and millholes. The depth of lithophagid borings upon formation is between 3-9 cm (Peharda et al, 2015) while millholes, that is, erosional hollows formed by pebble agitation in the intertidal zone, are usually a few centimeters to a few decimetres deep. Therefore, the preservation of these features allows us to be confident that we can constrain erosion to less than a few millimetres or centimetres.…”

Section: CL Sampling Approach and Preparationmentioning

confidence: 99%

Distributed normal faulting in the tip zone of the South Alkyonides Fault System, Gulf of Corinth, constrained using 36Cl exposure dating of Late-Quaternary wave-cut platforms.

Robertson¹,

Roberts²,

Iezzi³

et al. 2019

Preprint

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In order to investigate the geometry, rates and kinematics of active faulting in the region close to the tip of a major crustal-scale normal fault in the Gulf of Corinth, Greece, we have mapped faults and dated their offsets using a combination of 234U/230Th coral dates and in situ 36Cl cosmogenic exposure ages for sediments and wave-cut platforms deformed by the faults. Our results show that deformation in the tip zone is distributed across as many as eight faults arranged within ~700 m across strike, each of which deforms deposits and landforms associated with the 125 ka marine terrace of Marine Isotope Stage 5e. Summed throw-rates across strike achieve values as high as 0.3-1.6 mm/yr, values that are relatively high compared to that at the centre of the crustal-scale fault (2-3 mm/yr from Holocene palaeoseismology and 3-4 mm/yr from GPS geodesy). The relatively high deformation rate and distributed deformation rate in the tip zone are discussed in terms of stress enhancement from rupture of neighbouring crustal-scale faults and in terms of how this should be considered during fault-based seismic hazard assessment.

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“…Associated with the marine terrace deposits are (a) palaeoshorelines, located updip from the terrace deposits, defined by palaeo sea‐cliffs cut into bedrock limestones, marked by shoreline notches lined with lithophagid borings and other shoreline fauna (algal encrustations; gastropods; echinoderms; bivalves; and, rarely, corals), and (b) wave‐cut platforms, which are the along‐strike correlatable surfaces to marine terrace deposits, characterized by erosive surfaces marked with millholes that are in turn marked by lithophagid borings. The borings are between 3 and 9 cm deep when formed (Peharda et al, ), though research by Devescovi and Iveša () suggests a value closer to 6 cm is common, so their preservation with depths of a few centimeters indicates minimal erosion since their formation.…”

Section: Introductionmentioning

confidence: 99%

Temporally Constant Quaternary Uplift Rates and Their Relationship With Extensional Upper‐Plate Faults in South Crete (Greece), Constrained With ³⁶Cl Cosmogenic Exposure Dating

et al. 2019

View full text Add to dashboard Cite

Preserved sets of marine terraces and palaeoshorelines above subduction zones provide an opportunity to explore the long‐term deformation that occurs as a result of upper‐plate extension. We investigate uplifted palaeoshorelines along the South Central Crete Fault and over its western tip, located above the Hellenic Subduction Zone, in order to derive uplift rates and examine the role that known extensional faults contribute to observed coastal uplift. We have mapped palaeoshorelines and successfully dated four Late‐Quaternary wave‐cut platforms using in situ 36Cl exposure dating. These absolute ages are used to guide a correlation of palaeoshorelines with Quaternary sea level highstands from 76.5 to ~900 ka; the results of which suggest that uplift rates vary along fault strikes but have been constant for up to 600 ka in places. Correlation of palaeoshorelines across the South Central Crete Fault results in a throw‐rate of 0.41 mm/year and, assuming repetition of 1.1‐m slip events, a fault‐specific earthquake recurrence interval of approximately 2,700 years. Elastic‐half‐space modeling implies that coastal uplift is related to offshore upper‐plate extensional faults. These faults may be responsible for perturbing the uplift rate signals in the south central Crete area. Our findings suggest that where uplifted marine terraces are used to make inferences about the mechanisms responsible for uplift throughout the Hellenic Subduction Zone, and other subduction zones worldwide, the impact of upper‐plate extensional faults over multiple seismic cycles should also be considered.

show abstract

Growth and longevity of Lithophaga lithophaga: what can we learn from shell structure and stable isotope composition?

Cited by 21 publications

References 47 publications

Temporally constant Quaternary uplift rates and their relationship with extensional upper-plate faults in south Crete (Greece), constrained with 36Cl exposure dating.

Temporally constant Quaternary uplift rates and their relationship with extensional upper-plate faults in south Crete (Greece), constrained with 36Cl exposure dating.

Distributed normal faulting in the tip zone of the South Alkyonides Fault System, Gulf of Corinth, constrained using 36Cl exposure dating of Late-Quaternary wave-cut platforms.

Temporally Constant Quaternary Uplift Rates and Their Relationship With Extensional Upper‐Plate Faults in South Crete (Greece), Constrained With ³⁶Cl Cosmogenic Exposure Dating

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Growth and longevity of Lithophaga lithophaga: what can we learn from shell structure and stable isotope composition?

Cited by 21 publications

References 47 publications

Temporally constant Quaternary uplift rates and their relationship with extensional upper-plate faults in south Crete (Greece), constrained with 36Cl exposure dating.

Temporally constant Quaternary uplift rates and their relationship with extensional upper-plate faults in south Crete (Greece), constrained with 36Cl exposure dating.

Distributed normal faulting in the tip zone of the South Alkyonides Fault System, Gulf of Corinth, constrained using 36Cl exposure dating of Late-Quaternary wave-cut platforms.

Temporally Constant Quaternary Uplift Rates and Their Relationship With Extensional Upper‐Plate Faults in South Crete (Greece), Constrained With 36Cl Cosmogenic Exposure Dating

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Resources

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Temporally Constant Quaternary Uplift Rates and Their Relationship With Extensional Upper‐Plate Faults in South Crete (Greece), Constrained With ³⁶Cl Cosmogenic Exposure Dating