Summer school, workshop by Giannis Saitis
International Conference
New Technologies, Hazards and Geoarchaeology
Athens, 3rd of November 2017
McAGENDA Multiplier Event 7 April 17 (Trieste) organized by S. Furlani
Mc Agenda - Erasmus Plus - Multiplier Event
Ancient harbour of NARBONNE
Organised by Aix-Marseill... more Mc Agenda - Erasmus Plus - Multiplier Event
Ancient harbour of NARBONNE
Organised by Aix-Marseille Université in collaboration with the
Research Project « Les ports antiques de Narbonne »
13th of June, 2017
Teaching Documents by Giannis Saitis
Naxos Mac Agenda 2017
https://www.youtube.com/watch?v=fSmOuWTDOt4
https://www.youtube.com/watch?v=VAglyBvXKlM&t=4s
Mac Agenda ERASMUS PLUS summer School Naxos 2017
https://www.youtube.com/watch?v=SDtTvfLIrHU&t=9s
Video by Giannis Saitis
Conference Presentations by Giannis Saitis
XIX INQUA Congress, 2015
In the scope of the France-Greek program PLATON n° 30409XH “EMerChanCy”, this work focuses on the... more In the scope of the France-Greek program PLATON n° 30409XH “EMerChanCy”, this work focuses on the beachrocks of Paros and Naxos Islands, in central Cyclades, Aegean Sea, Greece, in an attempt to study their geochemistry and interpret their palaeoenvironmental significance.
Beachrocks are coastal sedimentary formations, consisting of beach sediments that are relatively quickly cemented through the precipitation of CaCO3. However, debate still exists concerning their depositional environment, and therefore, their use as indicators for sea-level changes.
For the aim of the present study, representative bulk samples from both islands were analyzed for their mineralogical (XRD) and chemical compositition (SEM). Chemical analyses were performed by XRF . The cement agent and the fine sand/clay fraction of the samples mainly consist of authigenic magnesian calcite, which commonly precipitates in shallow marine environments, especially in high concentration of Ca2+(>4 mol% CaCO3 or 1.2 wt.%). Furthermore, a series of clastic silicate and alumino-silicate minerals are detected. The predominant coarse fragments hosted within cement material are quartz, albite and K-feldspar.
The texture of the beachrock samples varies from almost homogeneous sandstone to a mixture of lithologies, such as massive gravel, sandstone and claystone. Most of the grains are flattened and only rarely angular pieces of siliceous rocks occur, hosted in the fine-grained Mg-calcite cement. This grain size and shape is indicative of the genetic environment of beachrocks, implying the maturity level of cementation from early stage to modern situation.
The beachrock samples derived from various depositional periods and depths, from the front and end slabs. The beachrocks were also correlated with stratigraphical material from boreholes and archaeological remains from the study area in an attempt to understand the coastal changes during the late Holocene in Central Cyclades.
New Technologies, Hazards and Geoarchaeology International Conference, 2017
This work focuses on the beachrocks of Paros and Naxos Islands, in central Cyclades, Aegean Sea, ... more This work focuses on the beachrocks of Paros and Naxos Islands, in central Cyclades, Aegean Sea, Greece, in an attempt to study their geochemistry and interpret their palaeoenvironmental significance.
Beachrocks are coastal sedimentary formations, consisting of beach sediments that are relatively quickly cemented through the precipitation of CaCO3. However, debate still exists concerning their depositional environment, and therefore, their use as indicators for sea-level changes.
In this study we focus on the beachrocks of Paros and Naxos islands, which are found at various depths. For the aim of the present study, representative bulk samples from both islands were analyzed for their mineralogical (XRD and SEM) and chemical (XRF) composition. The
cement agent and the fine sand/clay fraction of the samples mainly consist of authigenic magnesian calcite, which commonly precipitates in shallow marine environments, especially in high concentration of Ca2+(>4 mol% CaCO3 or 1.2 wt.%). Furthermore, a series of clastic silicate
and alumino-silicate minerals are detected. The predominant coarse fragments hosted within the cement material are quartz, plagioclase and K-feldspar. The texture of the beachrock samples varies from almost homogeneous sandstone to a mixture of lithologies, such as massive gravel, sandstone and claystone. Most of the grains are flattened and only rarely angular pieces of siliceous rocks occur, hosted in the fine-grained Mgcalcite cement. This grain size and shape is indicative of the genetic environment of beachrocks, implying the maturity level of cementation from early stage to modern situation.
The beachrock samples derived from various depositional periods and depths, from the front and end slabs. The beachrocks were also correlated with stratigraphical material from boreholes and archaeological remains from the study area in an attempt to understand the coastal changes during the late Holocene in Central Cyclades.
New Technologies, Hazards and Geoarchaeology International Conference, 2017
Sea level indicators, such as tidal notches and beachrocks, may provide valuable information for ... more Sea level indicators, such as tidal notches and beachrocks, may provide valuable information for the relative sea level (RSL) changes of an area. Although beachrocks have received various arguments regarding their accuracy as sea level indicators, they have often been used to assess Holocene shoreline changes and crustally induced RSL changes.
The study area, Okinawa, belongs to the Ryukyu Islands, Japan (Pacific Ocean), forming the emerged part of an active island arc, where the Philippine Sea plate is subducting beneath the Asian continent. Various studies have noted evidence of emergence. Beachrocks have also
been studied, however, detailed examinations of their spatial extend and cement characteristics has not been accomplished.
In this context, the aim of this research is to discuss the RSL evolution in Okinawa through the re-evaluation of reported sea level indicators, along with additional observations on beachrocks and notches. Fieldwork was accomplished in the coastal zone of Okinawa, through detailed spatial mapping and sampling of beachrock occurrences. Coastal transects were accomplished in order to measure the width and depth/elevation of beachrock slabs. In order to perform petrographic analysis, stained thin sections were studied using transmitted light microscope where selected samples were studied under SEM.
9th International Conference on Geomorphology, 2017
Sea level indicators, such as tidal notches and beachrocks, may provide valuable information for ... more Sea level indicators, such as tidal notches and beachrocks, may provide valuable information for the relative sea level (RSL) changes of an area. Although beachrocks have received various arguments regarding their accuracy as sea level indicators, they have often been used to assess
Holocene shoreline changes and crustally induced RSL changes.
The study area, Okinawa, belongs to the Ryukyu Islands, Japan (Pacific Ocean), forming the emerged part of an active island arc, where the Philippine Sea plate is subducting beneath the Asian continent. Evidence of emergence has been noted by various studies. Beachrocks have also been studied, however, detailed examinations of their spatial extend and cement characteristics has not been accomplished. In this context, the purpose of this study is to discuss the RSL evolution in Okinawa through the re-evaluation of reported sea level indicators, along with additional observations of beachrocks and notches.
Fieldwork was accomplished in the coastal zone of Okinawa, through detailed spatial mapping and sampling of beachrock occurrences. Coastal transects were accomplished in order to measure the width and depth/elevation of beachrock slabs. Thin sections were prepared to perform petrographic and microstratigraphic analyses using a polarizing microscope.
In this work, we focus on the beachrocks of the coastal zone of Okinawa (Japan) in an attempt to evaluate the RSL changes of the area during the Late Holocene.
Papers by Giannis Saitis
Sea level indicators, such as tidal notches and beachrocks, may pro- vide valuable information fo... more Sea level indicators, such as tidal notches and beachrocks, may pro- vide valuable information for the relative sea level (RSL) changes of an area. The study area, Okinawa, belongs to the Ryukyu Islands, Japan (Pacific Ocean), forming the emerged part of an active island arc, where the Philippine Sea plate is subducting beneath the Asian continent. Evi- dence of emergence has been noted by various studies. Beachrocks have also been studied, however, detailed examinations of their spatial extent and cement characteristics has not been accomplished. The purpose of this study is to discuss the RSL evolution in Okinawa through the re-eval- uation of reported sea level indicators, with additional observations of beachrocks and notches and RSL predictions. Our findings suggest that the majority of Okinawa beachrocks have formed in the intertidal zone. Although the vertical uncertainty of the produced SLIPs is relatively large, there is a good agreement between the different types of sea level indicators. Comparisons with RSL predictions as well as the presence of uplifted notches further suggest that Okinawa island is generally charac- terized by an uplift trend, which is larger in its southern part
Journal of Marine Science and Engineering, 2021
Coastal lagoons and dunes are of great ecological importance, not only for providing habitats for... more Coastal lagoons and dunes are of great ecological importance, not only for providing habitats for rare flora and fauna, but also for protecting coastal areas from rising sea levels and storms, etc. Even though these features are unique for sustainable development and are extremely important to the natural environment and economy, they are one of the most vulnerable and threatened ecosystems due to their small size. The western coasts of Naxos (central Aegean Sea) represent an example of such phenomena, with various wetlands bordered by low-lying sand dunes. The aim of our study is to assess the vulnerability and pressures of the western coasts of Naxos Isl. by taking into consideration both natural and anthropogenic factors. We used a variety of approaches for the environmental and geomorphological study of the coastal zone to achieve this goal, including: (a) study of aerial photography from 1960 until today, (b) systematic seasonal aerial monitoring by drone, since 2015, (c) use o...
Raising awareness for sustainable development and environmental consciousness is an alternative t... more Raising awareness for sustainable development and environmental consciousness is an alternative teaching approach of geosciences in primary education. Through our methodology this is achieved by strengthening teachers' profile to effectively coach students to work on several environmental issues. By creating a teacher's guideline handbook, in accordance with the educational targets and regulations of EU countries, teachers acquire a fresh perspective on teaching environmental sciences. They also gain scientific knowledge in five educational topics through the implementation of five mini-projects. An e-book enriched with the pupils' digitalised environmental stories was designed to attract students and motivate them to engage environmental issues. The final product acts as a triggering factor for the much-needed environmental awareness of pupils around Europe.
Land, 2021
The wildfires of summer 2021 in Greece were among the most severe forest fire events that have oc... more The wildfires of summer 2021 in Greece were among the most severe forest fire events that have occurred in the country over the past decade. The conflagration period lasted for 20 days (i.e., from 27 July to 16 August 2021) and resulted in the devastation of an area of more than 3600 Km2. Forest fire events of similar severity also struck other Mediterranean countries during this period. Apart from their direct impacts, forest fires also render an area more susceptible to runoff erosion by massively removing its vegetation, among other factors. It is clear that immediately after a forest fire, most areas are much more susceptible to erosion. In this paper, we evaluate the erosion hazard of Attica, Northern Euboea, and the Peloponnese that were devastated by forest fires during the summer of 2021 in Greece, in comparison with their geological and geomorphological structures, as well as land cover and management. Given that a very significant part of these areas were burnt during the ...
Geosciences, 2022
Cyprus has a long history of tsunami activity, as described in archaeological and geological reco... more Cyprus has a long history of tsunami activity, as described in archaeological and geological records. Although the study area has experienced tsunamis in the past and constitutes an area threatened by this hazard both from the Cyprean arc and from the neighboring Hellenic arc, field research on tsunami evidence on the coastal zone of Cyprus still remains scarce. It is clear from the literature that large boulder accumulations are an important feature along the coasts of Cyprus, testifying to extreme events. A detailed field survey revealed that at various locations cited in the literature as hosting geomorphological evidence of past tsunamis, no such evidence was identified. It is likely that the high touristic activity that has been occurring on the coasts of Cyprus during the last 20 years may have affected tsunami indicators such as boulder accumulations. Tsunamis are unpredictable and infrequent but potentially large-impact natural disasters. The latest strong tsunami that cause...
Uploads
Summer school, workshop by Giannis Saitis
For more information visit http://mcagenda.geol.uoa.gr/index.php; http://geoarchaeology.geol.uoa.gr/
The scope of McAgenda, is to enhance the quality of higher education, to overcome the fragmentation of higher education between countries, to enhance inter-disciplinarity and trans-disciplinarity, to enhance the employability of University graduates, to enhance networking among higher education institutions and research institutions across EU Member States, to enhance mutual understanding between people and cultures of the EU.
McAgenda is focusing on:
Quaternary GeoEnvironment - ArchaeoGeomorphology
Analysis and Management of Anthropogenic Natural Hazards and Disasters.
http://mcagenda.geol.uoa.gr/index.php
Ancient harbour of NARBONNE
Organised by Aix-Marseille Université in collaboration with the
Research Project « Les ports antiques de Narbonne »
13th of June, 2017
Teaching Documents by Giannis Saitis
Video by Giannis Saitis
Naxos Mac Agenda Summer school 2017
https://www.youtube.com/watch?v=C-ey4ruIhlM
Conference Presentations by Giannis Saitis
Beachrocks are coastal sedimentary formations, consisting of beach sediments that are relatively quickly cemented through the precipitation of CaCO3. However, debate still exists concerning their depositional environment, and therefore, their use as indicators for sea-level changes.
For the aim of the present study, representative bulk samples from both islands were analyzed for their mineralogical (XRD) and chemical compositition (SEM). Chemical analyses were performed by XRF . The cement agent and the fine sand/clay fraction of the samples mainly consist of authigenic magnesian calcite, which commonly precipitates in shallow marine environments, especially in high concentration of Ca2+(>4 mol% CaCO3 or 1.2 wt.%). Furthermore, a series of clastic silicate and alumino-silicate minerals are detected. The predominant coarse fragments hosted within cement material are quartz, albite and K-feldspar.
The texture of the beachrock samples varies from almost homogeneous sandstone to a mixture of lithologies, such as massive gravel, sandstone and claystone. Most of the grains are flattened and only rarely angular pieces of siliceous rocks occur, hosted in the fine-grained Mg-calcite cement. This grain size and shape is indicative of the genetic environment of beachrocks, implying the maturity level of cementation from early stage to modern situation.
The beachrock samples derived from various depositional periods and depths, from the front and end slabs. The beachrocks were also correlated with stratigraphical material from boreholes and archaeological remains from the study area in an attempt to understand the coastal changes during the late Holocene in Central Cyclades.
Beachrocks are coastal sedimentary formations, consisting of beach sediments that are relatively quickly cemented through the precipitation of CaCO3. However, debate still exists concerning their depositional environment, and therefore, their use as indicators for sea-level changes.
In this study we focus on the beachrocks of Paros and Naxos islands, which are found at various depths. For the aim of the present study, representative bulk samples from both islands were analyzed for their mineralogical (XRD and SEM) and chemical (XRF) composition. The
cement agent and the fine sand/clay fraction of the samples mainly consist of authigenic magnesian calcite, which commonly precipitates in shallow marine environments, especially in high concentration of Ca2+(>4 mol% CaCO3 or 1.2 wt.%). Furthermore, a series of clastic silicate
and alumino-silicate minerals are detected. The predominant coarse fragments hosted within the cement material are quartz, plagioclase and K-feldspar. The texture of the beachrock samples varies from almost homogeneous sandstone to a mixture of lithologies, such as massive gravel, sandstone and claystone. Most of the grains are flattened and only rarely angular pieces of siliceous rocks occur, hosted in the fine-grained Mgcalcite cement. This grain size and shape is indicative of the genetic environment of beachrocks, implying the maturity level of cementation from early stage to modern situation.
The beachrock samples derived from various depositional periods and depths, from the front and end slabs. The beachrocks were also correlated with stratigraphical material from boreholes and archaeological remains from the study area in an attempt to understand the coastal changes during the late Holocene in Central Cyclades.
The study area, Okinawa, belongs to the Ryukyu Islands, Japan (Pacific Ocean), forming the emerged part of an active island arc, where the Philippine Sea plate is subducting beneath the Asian continent. Various studies have noted evidence of emergence. Beachrocks have also
been studied, however, detailed examinations of their spatial extend and cement characteristics has not been accomplished.
In this context, the aim of this research is to discuss the RSL evolution in Okinawa through the re-evaluation of reported sea level indicators, along with additional observations on beachrocks and notches. Fieldwork was accomplished in the coastal zone of Okinawa, through detailed spatial mapping and sampling of beachrock occurrences. Coastal transects were accomplished in order to measure the width and depth/elevation of beachrock slabs. In order to perform petrographic analysis, stained thin sections were studied using transmitted light microscope where selected samples were studied under SEM.
Holocene shoreline changes and crustally induced RSL changes.
The study area, Okinawa, belongs to the Ryukyu Islands, Japan (Pacific Ocean), forming the emerged part of an active island arc, where the Philippine Sea plate is subducting beneath the Asian continent. Evidence of emergence has been noted by various studies. Beachrocks have also been studied, however, detailed examinations of their spatial extend and cement characteristics has not been accomplished. In this context, the purpose of this study is to discuss the RSL evolution in Okinawa through the re-evaluation of reported sea level indicators, along with additional observations of beachrocks and notches.
Fieldwork was accomplished in the coastal zone of Okinawa, through detailed spatial mapping and sampling of beachrock occurrences. Coastal transects were accomplished in order to measure the width and depth/elevation of beachrock slabs. Thin sections were prepared to perform petrographic and microstratigraphic analyses using a polarizing microscope.
In this work, we focus on the beachrocks of the coastal zone of Okinawa (Japan) in an attempt to evaluate the RSL changes of the area during the Late Holocene.
Papers by Giannis Saitis
For more information visit http://mcagenda.geol.uoa.gr/index.php; http://geoarchaeology.geol.uoa.gr/
The scope of McAgenda, is to enhance the quality of higher education, to overcome the fragmentation of higher education between countries, to enhance inter-disciplinarity and trans-disciplinarity, to enhance the employability of University graduates, to enhance networking among higher education institutions and research institutions across EU Member States, to enhance mutual understanding between people and cultures of the EU.
McAgenda is focusing on:
Quaternary GeoEnvironment - ArchaeoGeomorphology
Analysis and Management of Anthropogenic Natural Hazards and Disasters.
http://mcagenda.geol.uoa.gr/index.php
Ancient harbour of NARBONNE
Organised by Aix-Marseille Université in collaboration with the
Research Project « Les ports antiques de Narbonne »
13th of June, 2017
Naxos Mac Agenda Summer school 2017
https://www.youtube.com/watch?v=C-ey4ruIhlM
Beachrocks are coastal sedimentary formations, consisting of beach sediments that are relatively quickly cemented through the precipitation of CaCO3. However, debate still exists concerning their depositional environment, and therefore, their use as indicators for sea-level changes.
For the aim of the present study, representative bulk samples from both islands were analyzed for their mineralogical (XRD) and chemical compositition (SEM). Chemical analyses were performed by XRF . The cement agent and the fine sand/clay fraction of the samples mainly consist of authigenic magnesian calcite, which commonly precipitates in shallow marine environments, especially in high concentration of Ca2+(>4 mol% CaCO3 or 1.2 wt.%). Furthermore, a series of clastic silicate and alumino-silicate minerals are detected. The predominant coarse fragments hosted within cement material are quartz, albite and K-feldspar.
The texture of the beachrock samples varies from almost homogeneous sandstone to a mixture of lithologies, such as massive gravel, sandstone and claystone. Most of the grains are flattened and only rarely angular pieces of siliceous rocks occur, hosted in the fine-grained Mg-calcite cement. This grain size and shape is indicative of the genetic environment of beachrocks, implying the maturity level of cementation from early stage to modern situation.
The beachrock samples derived from various depositional periods and depths, from the front and end slabs. The beachrocks were also correlated with stratigraphical material from boreholes and archaeological remains from the study area in an attempt to understand the coastal changes during the late Holocene in Central Cyclades.
Beachrocks are coastal sedimentary formations, consisting of beach sediments that are relatively quickly cemented through the precipitation of CaCO3. However, debate still exists concerning their depositional environment, and therefore, their use as indicators for sea-level changes.
In this study we focus on the beachrocks of Paros and Naxos islands, which are found at various depths. For the aim of the present study, representative bulk samples from both islands were analyzed for their mineralogical (XRD and SEM) and chemical (XRF) composition. The
cement agent and the fine sand/clay fraction of the samples mainly consist of authigenic magnesian calcite, which commonly precipitates in shallow marine environments, especially in high concentration of Ca2+(>4 mol% CaCO3 or 1.2 wt.%). Furthermore, a series of clastic silicate
and alumino-silicate minerals are detected. The predominant coarse fragments hosted within the cement material are quartz, plagioclase and K-feldspar. The texture of the beachrock samples varies from almost homogeneous sandstone to a mixture of lithologies, such as massive gravel, sandstone and claystone. Most of the grains are flattened and only rarely angular pieces of siliceous rocks occur, hosted in the fine-grained Mgcalcite cement. This grain size and shape is indicative of the genetic environment of beachrocks, implying the maturity level of cementation from early stage to modern situation.
The beachrock samples derived from various depositional periods and depths, from the front and end slabs. The beachrocks were also correlated with stratigraphical material from boreholes and archaeological remains from the study area in an attempt to understand the coastal changes during the late Holocene in Central Cyclades.
The study area, Okinawa, belongs to the Ryukyu Islands, Japan (Pacific Ocean), forming the emerged part of an active island arc, where the Philippine Sea plate is subducting beneath the Asian continent. Various studies have noted evidence of emergence. Beachrocks have also
been studied, however, detailed examinations of their spatial extend and cement characteristics has not been accomplished.
In this context, the aim of this research is to discuss the RSL evolution in Okinawa through the re-evaluation of reported sea level indicators, along with additional observations on beachrocks and notches. Fieldwork was accomplished in the coastal zone of Okinawa, through detailed spatial mapping and sampling of beachrock occurrences. Coastal transects were accomplished in order to measure the width and depth/elevation of beachrock slabs. In order to perform petrographic analysis, stained thin sections were studied using transmitted light microscope where selected samples were studied under SEM.
Holocene shoreline changes and crustally induced RSL changes.
The study area, Okinawa, belongs to the Ryukyu Islands, Japan (Pacific Ocean), forming the emerged part of an active island arc, where the Philippine Sea plate is subducting beneath the Asian continent. Evidence of emergence has been noted by various studies. Beachrocks have also been studied, however, detailed examinations of their spatial extend and cement characteristics has not been accomplished. In this context, the purpose of this study is to discuss the RSL evolution in Okinawa through the re-evaluation of reported sea level indicators, along with additional observations of beachrocks and notches.
Fieldwork was accomplished in the coastal zone of Okinawa, through detailed spatial mapping and sampling of beachrock occurrences. Coastal transects were accomplished in order to measure the width and depth/elevation of beachrock slabs. Thin sections were prepared to perform petrographic and microstratigraphic analyses using a polarizing microscope.
In this work, we focus on the beachrocks of the coastal zone of Okinawa (Japan) in an attempt to evaluate the RSL changes of the area during the Late Holocene.