Une présentation qui parle de la fureur des volcans, de la volcanologie, des volcans en France, du Piton de la Fournaise (La Réunion) pour les élèves du collège.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
Une présentation qui parle de la fureur des volcans, de la volcanologie, des volcans en France, du Piton de la Fournaise (La Réunion) pour les élèves du collège.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
During this webinar, Anand Bagmar demonstrates how AI tools such as ChatGPT can be applied to various stages of the software development life cycle (SDLC) using an eCommerce application case study. Find the on-demand recording and more info at https://applitools.info/b59
Key takeaways:
• Learn how to use ChatGPT to add AI power to your testing and test automation
• Understand the limitations of the technology and where human expertise is crucial
• Gain insight into different AI-based tools
• Adopt AI-based tools to stay relevant and optimize work for developers and testers
* ChatGPT and OpenAI belong to OpenAI, L.L.C.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
During this webinar, Anand Bagmar demonstrates how AI tools such as ChatGPT can be applied to various stages of the software development life cycle (SDLC) using an eCommerce application case study. Find the on-demand recording and more info at https://applitools.info/b59
Key takeaways:
• Learn how to use ChatGPT to add AI power to your testing and test automation
• Understand the limitations of the technology and where human expertise is crucial
• Gain insight into different AI-based tools
• Adopt AI-based tools to stay relevant and optimize work for developers and testers
* ChatGPT and OpenAI belong to OpenAI, L.L.C.
1. 0,8 Ma
0,6 Ma
0,16 Ma
Carte géologique simplifiée
4.9 à 3.9 Ma
(Guillou et al., 2004, Carracedo et al., 2007)
11.6 à 8.9 Ma
6.2 à 5.6 Ma
< 0.19 Ma
2. Datations Tenerife
Strato-volcan terminal Pico del Teide, Pico viejo, Montana blanca : < 0.17 Ma
+ activité strombolienne + phréato-magmatisme + dômes trachytiques + glissement
sectoriel (Icod 0.16)
Cordillère dorsale : 0.90 à 0.43 Ma + Glissements sectoriels (Guimar 0.8, Orotava
0.6, Micheque)
Strato-volcan Las Canadas : 2.0 à 0.17 Ma + calderas d’effondrement
Strato-volcan Las Canadas : 3.3 et 2.0 Ma + Glissements sectoriels + caldera (?)
Volcan-bouclier Las Canadas : > 4.5 Ma + glissements sectoriels (?)
Anaga : 4.9 à 3.9 Ma (moitié d’un volcan bouclier de 25 km de diamètre)
Teno : 6.2 à 5.6 Ma
Roque del Conde : 11.6 à 8.9 Ma (relique de l’ancêtre de Las Canadas)
Erosion
5. Les trois volcans-boucliers au mio-pliocène
Coulées laviques et retombées pyroclastiques de composition suivante :
Picrites (océanites) : roche ultrabasique à phénocristaux d’olivine
Basanites : labrador, feldspathoïdes, amph., pyrox, olivine
Hawaïtes : basanites sans feldspathoïdes
Benmoréites (trachy-andésites) : andésine, cpx calcique, hornblende
Le tout recoupé de dykes et de dômes de composition différenciée (trachytes,
phonolites)
6. Roque del Conde 11.6 à 8.9 Ma
Roque supérieur : coulées laviques hawaïtes, mugéarites
Roque inférieur : coulées laviques de basanites (ankaramites, variété à
phénocristaux de pyroxènes et olivine) Baranco del Infierno
Le tout recoupé de nombreux dykes et sills
8. El Teno 6.2 à 5.6 Ma
Teno supérieur : coulées (basanites à benmoréites) horizontales (Los Gigantes) + trachytes
Glissement sectoriel du flanc nord : coulées de débris intercalées
Teno inférieur : coulées et pyroclastites basanitiques, plongeant vers l’W, nb dykes et sills
+ cumulats (barranco de Masca)
9. El Teno série inférieure, Barranco de Masca
Los viajeros.com
20. Datations Las Canadas – El Teide
Strato-volcan terminal Pico del Teide, Pico viejo, Montana blanca, rajada : < 0.17 Ma
Basanites à phonolites et trachytes
Développés, pour El Teide à l’intersection de deux calderas, pour le Pico viejo (Los Narices)
à l’intersection de la caldera W et de la rift zone W
Glissement sectoriel vers le N (Icod 0.16 Ma)
Strato-volcan Las Canadas (groupe sommital) caldera + groupe Bandas del Sur : 1.57 à 0.17 Ma
3 Cycles basanites - ignimbrites phonolitiques
Formation Diego Hernandez (E caldera) : 0.37 à 0.17 Ma (ignimbrites non soudées
alternant avec des scories basaltiques)
Formation de Guajara (sud caldera) : 0.85 à 0.60 Ma (incluant des ignimbrites soudées)
Formation Ucanca (SW caldera) : 1.57 à 1.07 Ma (incluant des ignimbrites soudées)
Calderas d’effondrement + dômes trachytiques + altération hydrothermale avec dykes disposés
radialement et cone-sheet + glissement sectoriel vers le N-NE (Orotava 0.6 Ma)
Strato-volcan Las Canadas (groupe basal) : 3.3 et 1.6 Ma
Basanitiques, trachy-basaltes, trachytes, phonolites (laves et ignimbrites)
Ignimbrites de San Juan de la Rambla (nord caldera) : 2.1 Ma
Ignimbrites del Cedro (ouest caldera) : 2.35 à 2 Ma
Strato-volcan de 4500 m de haut et 40 km de diamètre, développé à l’intersection des
3 rift zones + glissements sectoriels vers le nord (Tigaiga, Roques de Garcia,…)
+ caldera d’effondrement ?
21. Strato-volcan de Las Canadas 3.3 à 0.17 Ma
Série supérieure : 3 unités ignimbritiques phonolitiques + dômes et dykes
Série inférieure : trachy-basanite à pyroxène + tufs et brèches polygéniques + ignimbrites
W
22. Strato-volcan Las Canadas Groupe basal (3.3 à 1.6 Ma)
Coulées basanitiques
Coulées basanitiques avec intercalation
d’une coulée de cendres felsique
23. Strato-volcan Las Canadas Groupe basal Dôme – coulée phonolitique
Fluidalité soulignée par des vacuoles
Vacuole s’ouvrant en aval d’un lithique
24. Caldera de Las Canadas Roques de Garcia (1.7 à 1.6 Ma) – Groupe basal
El Teide avec le cône
sommital
Unité supérieure Roques de Garcia
(alternance de brèches et de tufs cendreux)
surmontant l’unité inférieure pyroclastique
avec inconformité
25. Caldera de Las Canadas Roques de Garcia – Groupe basal
Brèche polygénique, plutôt interprétée
comme une brèche de pente du mur de la caldera.
Pas de dépôt généralisé d’avalanche sous le
plancher actuel de la caldera (sondage 500m)
(Unité supérieure)
26. Caldera de Las Canadas Roques de Garcia – Groupe basal
Cone – sheet de pendage N-NE (conduit
d’alimentation du groupe sommital) marqueur
d’une résurgence qui aurait soulevé les brèches du groupe basal
27. Caldera de Las Canadas - Los Azuleros - Sommet Groupe basal
Altération hydrothermale
1.5 à 1.2 Ma (Fm Ucanca)
Dépôts pyroclastiques (200 m)
Coulées, retombées, déferlantes
+ remaniement épiclastique
Dépôts alternés réduits oxydés
Tuf pyroclastique
à éléments flammés
28. Caldera de Las Canadas Groupe sommital (1.57 à 0.17) 3 formations
Ignimbrites soudées
Ignimbrites non soudées
Los Azuleros
Google Earth
Google Earth
Formation 1 Ucanca
Groupe basal
Formation 2 Guajara
29. Caldera de Las Canadas – Groupe sommital (1.57 à 0.17 Ma)
Formation 3 Diego Hernandez la plus tardive
Google Earth
38. Les formations Bandas del Sur
Coulée de ponces et de
cendres non soudée
Granadilla avec à la base
une déferlante au sol
Retombée de ponces
Granadilla
Coulée de ponces et
cendres non soudée
Abades
Formation Guajara
Composition phonolitique
39. Les formations Bandas del Sur
Granoclassement
inverse des ponces
Granoclassement
normal des
lithiques
Figure de
charge
40. Les formations Bandas del Sur
Limite entre deux coulées pyroclastiques
Les ponces les plus grosses se trouvent
au sommet de l’unité inférieure
Ponce biphasée avec un cœur plus
felsique et une couronne plus basique
(Injection de magma basique dans chambre
felsique qui déclenche l’éruption)
47. La Montana de Guaza – dôme coulée 0.67 Ma (// Formation Guajara)
Google Earth
1 2
48. La Montana de Guaza – dôme coulée (trachyte - phonolite)
JJG donnant l’échelle de la prismation
Coulée phonolitique
Coulée de débris ou lahar
Ignimbrite Las Americas 0.88 Ma
1 2
49. La cordillère dorsale 0.9 à 0.4 Ma
Activité basaltique : 345 km3
Coulées, cônes de scories + laves différenciées
Correspond à la rift zone NE dont l’activité se poursuit actuellement.
Glissements sectoriels (Micheque 0.83 Ma, Guimar 0.83 Ma, Orotava 0.6 Ma)
51. La cordillère dorsale – Le « gâteau »
Retombées lapilli basanitiques Montana Negra
Retombées de ponces phonolitiques Las Canadas 0.27 Ma
Déferlantes
52. L’activité récente < 0.17 Ma
Glissement sectoriel (Icod 0.16 Ma)
Activité centrée sur les 3 rift zones : activité strombolienne
(qui a débuté sur les flancs du strato-volcan de Las Canadas
dès sa formation) au S, NW(Montana de Taco) et NE
Strato-volcan terminal Pico del Teide (3718 m) : à partir de
0.15 basanites puis laves intermédiaires. 30 000 ans : coulées
phonolitiques. Dernière activité au Piton : Lavas negras 860
ap JC
Pico viejo (3103 m) : < 20 000 ans, basanites communes avec
El Teide puis trachytes et phonolites (Roques blancos, 200 ap
JC)
Montana blanca : dôme - coulée + ponces phonolitiques (20
av JC)
56. El Pico del Teide
Cône sommital El Piton
Zone altérée par les fumerolles
Dépôt de soufre et d’alunite
57. El Pico del Teide
Coulées de phonolite vue du Teide
Dessus de coulée bréchifiée
Surface de type a’a
58. El Pico Viejo
Google Earth
Ponces Montana Blanca Coulée de phonolite avec levées latérales
59. El Pico Viejo
Los Narices
Basanites
(an 1798)
Roques blancos
Trachy-phonolites (an 200)
Google Earth
60. El Culaton sur La Montana Blanca
Google Earth
Dôme – coulée phonolitique
61. La Montana Blanca
Los Huevos del Teide
Fragments détachés d’un front de coulée phonolitique provenant
du Teide et ayant roulé sur les ponces de la Montana Blanca
68. L’exception Tenerife
Activité éruptive plutôt caractéristique du volcanisme calco-alcalin
(rhyolite, dacite) de subduction ou de point chaud intra-plaque
continentale (coulées de ponces et cendres soudées ou non, retombées
pliniennes, dômes)
Chimisme : sous-saturé des basanites aux phonolites ou trachytes
Expliqué par un contexte de point chaud intra-plaque océanique mais
avec un déplacement très faible : 1.9 cm/an
70. //www.lave.be/main/expeditions/Tenerife_2009/complexe_volcanique_du_teide.htm
//www.earth-of-fire.com/article-tenerife-la-caldera-del-rey-121786999.html
//monchujo.blogspot.fr/2009/01/teide.html
//www.webtenerifefr.com/sites-destinations/parc-national-teide/geolog%C3%ADa.htm
://halshs.archives-ouvertes.fr/file/index/docid/123713/filename/Doctorat_2002.pdf
logical and Geodynamic Context of the Teide Volcanic Complex, Carracedo et al., 2013
arque Nacional de la Caldera de Taburiente, Guia Geologica, (2009)
nerife Guide n°49, Geologist’s Association, (2003)
olcanism, H.U. Schmincke, (2004)
he Canary Islands: an example of structural control on the growth of large oceanic-island
anoes, J.C. Carracedo, Journal of Volcanology and Geothermal Research 60 (1994) 225-241
olution of ocean-island rifts : The northeast rift zone of Tenerife, Canary Islands,
Carracedo et al., GSA Bulletin; March/April (2011) v. 123; no. 3/4; p. 562-584
mplications for the early shield-stage evolution of Tenerife from K/Ar ages and magnetic
tigraphy, H. Guillou, Earth and Planetary Science Letters 222 (2004) 599-614
fectiveness of combined unspiked KeAr and 40Ar/39Ar dating methods in the 14C age ra
uillou et al., Quaternary Geochronology 6 (2011) 530-538
aldera Volcanism : analysis, modeling and response, J. Gottsman et J. Marti, (2008)
plosive Volcanism of Tenerife, Canary Islands, R. Cas et al., IAVCEI Field Guide Series, 1, (2010)
s Roques de Garcia formation, J. Marti et al., Stratigraphy and geology of volcanic areas (2010)
orphologies of conductive structures inside and around the Las Cañadas caldera, N. Coppo, (2008)
Références