GD
Geodynamics

plate tectonics

Beyond ‘black and white’: rethinking continental drift and land bridges through plate tectonics and orogenic bridges

Beyond ‘black and white’: rethinking continental drift and land bridges through plate tectonics and orogenic bridges

In this essay, Jean-Baptiste Koehl reflects on the origin of a 100-year-old divide within the geoscience community and explores how tectonics and paleontology may be brought closer together through the concept of orogenic bridges. Disclaimer: The reflections presented here reflect my perspective grounded in my own research and experience.   One of the most iconic interdisciplinary achievement ...[Read More]

The pulsed rise of the Nahuelbuta Range: How glaciers indirectly built a mountain in Patagonia

The pulsed rise of the Nahuelbuta Range: How glaciers indirectly built a mountain in Patagonia

Forearc ranges are a striking example of how tectonic processes shape our planet. The Nahuelbuta Range in southern Chile is one of such settings. This week, Ambrosio Vega-Ruiz from the GFZ Helmholtz Centre for Geosciences, Germany, is telling us the story of this remarkable range, exploring how climate feedback can influence tectonic uplift across coastal forearcs. Tectonic uplift before tectonic ...[Read More]

Destruction of the North China Craton and its global impact

Destruction of the North China Craton and its global impact

Cratons are forever, until they are not. These long-lived portions of lithosphere are known for being remarkably stable. However, if the conditions are right, even cratons can be ripped apart by geological forces, with far-reaching impacts on Earth’s systems. This week, Jyotirmoy Paul from the University of Oslo, Norway will tell us the downfall of the North China Craton, using numerical sim ...[Read More]

A journey to the centre of plate tectonics and mantle convection

A journey to the centre of plate tectonics and mantle convection

“Dynamics of Plate Tectonics and Mantle Convection,” is edited by Dr. João C. Duarte and published by Elsevier. The book brings together contributions from more than 40 renowned authors in the fields of geology, geodynamics, tectonics, petrology and geophysics. It offers the unique authors’ perspective on the interconnected processes of plate tectonics and mantle convection and their v ...[Read More]

Exploring rheology of Earth’s materials: The marvels of high-temperature high-pressure deformation experiments

Exploring rheology of Earth’s materials: The marvels of high-temperature high-pressure deformation experiments

The Earth, with its towering mountains, shifting tectonic plates, and dynamic geological processes, has always been a subject of fascination and inquiry for scientists. Amidst the vast array of scientific disciplines, one relatively small yet impactful field, known as experimental rock deformation, plays a crucial role in unraveling the mysteries hidden beneath the Earth’s surface. Though th ...[Read More]

Equilibrium Crustal Thickness and Dynamics of Earth’s Lithosphere: The Answer is 42.

Equilibrium Crustal Thickness and Dynamics of Earth’s Lithosphere: The Answer is 42.

“The Hitchhiker’s Guide to the Galaxy” had the answer; we think we have the right question. This week, Ajay Kumar from IISER Pune, India, will take us on a journey to the depths of the Earth’s lithosphere – a world as mysterious as the farthest reaches of the Universe. We will see what the thickness of the Earth’s crust can tell us about the balance between the ...[Read More]

The Tectonic Memory of the Mantle

The Tectonic Memory of the Mantle

The study of the mantle aids in our understanding of the Earth’s tectonic evolution. In this week’s news and views, honours student Mr. Robert Marks shares his thoughts. Mr. Marks received his Bachelors (Hons) degree from the University of Wollongong under the supervision of Dr Nicolas Flament. The Earth’s mantle is filled with subducted slabs, which are remnants of tectonic plates tha ...[Read More]

Plate tectonics from a perspective of continental crustal growth

Plate tectonics from a perspective of continental crustal growth

Understanding the plate tectonics initiation can give us incredible opportunity to guess the physical state of the early Earth. This week, Hee Choi, a Ph.D. candidate, takes us on a journey on initiation of plate tectonics and how continental crustal growth is related to it. Our planet Earth is the only place where plate tectonics takes place. No other planet or rocky moon in our solar system has ...[Read More]

The short story of my PhD

The short story of my PhD

PhD students’ struggles are alike; each succeed in their own way[1] It was a Friday morning, and nearly 3 years had passed since I arrived at Sydney. This meant, I only had one month left to submit my thesis! No sooner had I entered my office than a feeling of anxiety had found me. I had no time to dig deep into my own thoughts to discover what was happening, although it was obvious. Instead, I re ...[Read More]

The boundaries of plate modelling

The boundaries of plate modelling

This weeks post is all about the importance of boundaries. Plate boundaries that is. Jean-Christophe Wrobel-Daveau and Graeme Nicoll tell us why we should care where plate boundaries are and how they evolve through time, when attempting to reconstruct past plate motions. Global plate tectonic models are an incredible way to synthesise geological knowledge to gain both direct and indirect insight i ...[Read More]