The ‘Big One’ just got more complicated

Scientists have discovered a massive tear in the tectonic plate off the coast of Vancouver Island. This "rip" suggests that the northern end of the Cascadia Subduction Zone is actually starting to shut down. The CBC’s Johanna Wagstaffe investigates what this discovery might mean for the "Big One" off the coast of Vancouver Island.

CBC

This comprehensive undergraduate textbook Plate Tectonics delivers a contemporary and in-depth exploration of plate tectonics, making it an ideal resource for a capstone geology course.

Read more 👉 https://lttr.ai/AoBop

#PdfDelivers #InDepthExploration #PlateTectonics

📹 The ever changing Earth

What a fascinating video. While I knew about plate tectonics, I didn’t realize that continental drift was sneezed at even 80 years ago, as late as the 1940s.

https://youtu.be/t1hOdm0RJlY?si=XxKaeJN8qY3KmDAe

How can I see more? How can I experience more of this wonderful place? That’s the mission for 2026.

#1940s #continentalDrift #howtown #plateTectonics #tech #video #youtube
4 billion years of tectonics in 17 minutes

YouTube
The Iberian Peninsula is measurably spinning due to collision of African and Eurasion tectonic plates.
#platetectonics
#Spain
#Portugal https://indiandefencereview.com/scientists-prove-iberian-peninsula-spinning/
Scientists Can Prove the Iberian Peninsula Is Actually Spinning Beneath Europe

The Iberian Peninsula is undergoing a slow but measurable clockwise rotation, driven by tectonic forces far beneath the surface.

Indian Defence Review

RE: https://mstdn.social/@History_of_Geology/115849149784346182

#Alfred #Wegener (died November 1930 in Greenland) was a #German #geologist, #polarexplorer, and #meteorologist. He is primarily known for his #theory of #continentaldrift, which has significantly influenced modern theories of #platetectonics. Fossil discoveries and similar calving fronts along the west coast of #Africa and the east coast of #SouthAmerica led him to his theory, which is still crucial for understanding the #evolutionaryhistory of life on Earth.
©This text#StefanFWirth Berlin 2026

hard to swallow that all this would have little or no effect on #platetectonics - but, I have been talked down from this mental ledge several times by smarter folks.

real sciencey ones.

geologists, in this case.

The Origin Of Continents And Ocean Basins by M. V. Muratov

Professor Mikhail Muratov, P.Sc., Corr. Mem. USSR Acad. Sci., is Head of the Chair of Regional Geology and Paleontology, Moscow Institute of Geological Prospecting. He is the winner of State and Lenin Prizes.

This book deals with the origin, structure, and tectonic behavior of the earth’s crust beneath continents and oceans and describes principal stages of the earth’s geologic history. The author attaches much importance to geosynclinal cycles and their role in continental crust build-up and discusses intri­guing hypotheses explaining the present day face of our planet.

Translated from the Russian by V. Agranat

You can get the book here and here.

Twitter: @MirTitles
Mastodon: @[email protected]
Mastodon: @[email protected]
Bluesky: mirtitles.bsky.social

Preface

Chapter I. Structure and Age of the Earth’s Crust
Face of the Earth (9)
Continental and Oceanic Crust of the Earth (12)
Age of the Earth’s Crust (17)

Chapter II. Continental Crust
Inhomogeneity of the Structure (24)
Unconformities and Their Significance (30)
Evolution of Fold Areas and Formation of Platform Basement (33)

Chapter III. The Basic Component Parts of the Continents: Ancient Platforms and Fold Belts
The Importance of Ancient and Young Platforms in the Structure of Continents (36)
A Brief Outline of the Structure of Continents (36)
Constituent Elements of Ancient Platforms (40)
Fold Belts (41)

Chapter IV. The Structure and History of Geosynclinal Fold Areas
The Study of Geosynclines (48)
The Structure of Geosynclinal Fold Areas (50)
An Outline History of Geosynclinal Areas (52)
Main Stage (52)
Orogenic Stage (59)
Formations of Sedimentary and Volcanic Series of Geosynclinal Areas (61)
Differences in Ages of Geosynclinal Areas and in Formations of Troughs (69)
The Role of Intrusive Complexes in the Geosynclinal Cycle (73)
Geosynclinal Areas: Proliferous Sources of Valuable Minerals (79)
Two Principal Types of Geosynclinal Areas and Their Role in the Build-up of the Granitic-Metamorphic Layer of the Earth’s Crust (85)

Chapter V. Structure and History of the Basement of Ancient Platforms
Major Structural Units (87)
The Structure of Archean Massifs (88)
Proterozoic Fold Areas (90)
The Protosedimentary Cover of Ancient Platforms (94)
Outline History of the Basement of Ancient Platforms (95)
The Basement of Ancient Platforms: Mineral Resources (98)

Chapter VI. History of Fold Belts and Formation of the Basement of Young Platforms
Generation of the Riphean Basement of Major and Minor Belts (100)
Formation of the Paleozoic Basement of the Ural-Mongolia, Atlantic, and Arctic Belts (103)
History of the Mediterranean Fold Belt (106)
Inland Sea Basins and the Indonesia Area (108)
History of the Circum-Pacific Belt (112)
Formation of Granitic and Metamorphic Rocks of the Basement Within Fold Belts (124)

Chapter VII. Evolution of Ancient and Young Platforms
Basic Stages (127)
The Origin of Platform-Type Depressions (130)
Principal Valuable Minerals of the Sedimentary Cover of Platforms (132)
Volcanic Belts and Epiplatform Orogenesis (132)
Valuable Minerals in the Activated Areas of Platforms (134)

Chapter VIII. The Topography and Tectonics of the Ocean Floor
Principal Topographic Features and the Physiography (136)
Principal Tectonic Features of the Ocean Floor (140)
Pacific Ocean (140)
Indian Ocean (143)
Atlantic Ocean (144)
Arctic Ocean (147)

Chapter IX. The Origin of Ocean Basins in the Light of Geologic Evidence
The Physiography of the Pacific Bed and Its Probable Origin (149)
The Physiography of the Atlantic, Indian, and Arctic Beds and Their Origin (154)
Hypotheses Explaining the Conversion of Crustal Material Beneath the Ocean Floor (157)
Mobilistic Hypotheses Involving Continental Displacement (158)
Expanding Earth Hypothesis (165)
The Probable Age and the Mode of Formation of Ocean Basins (167)

Chapter X. Major Historical Events and the Stages of Formation of the Earth’s Crust
The Early Existence of the Earth Before Crust Formation (170)
The Basaltic Crust Before Hydrosphere Formation (170)
The Formation of the Granitic-Metamorphic Crust of Ancient Platforms (173)
The Consolidation of the Basement of Young Platforms (175)
The Latest Stage in the Development of the Earth’s Crust (177)
The General Trend in the Development of the Earth’s Crust (179)

Bibliography
Name Index
Subject Index

#1977 #geography #geologicalCycles #mirPublishers #oceanFloors #oceans #plateTectonics #sovietLiterature

Earth’s 8th Continent Buried Under The Pacific Finally Mapped By Scientists [Zealandia / Te Riu-a-Māui - “Finally”? ~wink~]
--
https://dailygalaxy.com/2025/10/earth-8th-continent-finally-mapped/ <-- shared (somewhat) technical article
--
https://doi.org/10.1029/2023TC007961 <-- shared 2023 paper
--
https://youtu.be/DDbc4K7bgnA?si=EZFmmPFybPLLyND7 <-- shared animation
--
"KEY POINTS
• Basalts and pebbly to cobbly sandstones have been dredged from the Fairway Ridge, Coral Sea
• Dating of the rocks and interpretation of magnetic anomalies allow mapping of major geological units across North Zealandia
• This work completes offshore reconnaissance geological mapping of the entire 5 million square km Zealandia continent…”
#geology #doggerland #Zealandia #TeRiuaMaui #godwana #godwanaland #cretaceous #mapping #geologicmapping #spatialanalysis #model #modeling #NewZealand #SouthPacific #continent #sampling #sediment #dredging #petrography #geochemistry #isotope #analyses #research #cenozoic #intraplate #platetectonics #tectonics #eocene #remotesensing #geophysics #geomagnetism