Some volcanic rocks carry hydrogen signatures that may trace back to Earth’s metallic core. Lavas from Baffin Island in the Canadian Arctic and Iceland contain unusually little deuterium, hydrogen’s heavier stable isotope. Explaining that imbalance could reveal whether the core has supplied material to the mantle over billions of years.

Work led by Wenzhong Wang at the University of Science and Technology of China tests a competing explanation. Published in Science Advances, the study examines whether crystallization of Earth’s ancient magma ocean could have created those distinctive signatures. Its simulations indicate that this process produced far too little separation between hydrogen isotopes.

The result strengthens the argument for selective transfer of hydrogen from the core into the surrounding rocky mantle. It does not directly demonstrate leakage or establish how quickly it occurs. Instead, the calculations constrain what an important alternative mechanism could have accomplished.

This map visualizes the major tectonic fault lines, plate motions, and seismic stress dynamics across the Anatolian Peninsula.

Data derived from USGS and regional fault databases. If you are interested in earthquake science, fault mechanics, and regional geology, feel free to check out r/SismolojiTR!

Hey,

I've just made a new YouTube Video about Cyanobacteria, and the Great Oxidation Event, don't hesitate to check it out if you're interested, and tell me what you think !

Have a Great Day !

See also: The publication in Science Advances

When checking by depth, using formulas like for how density and the y-value pressure increase linearly to each other, gravity is with a −2nd exponent problem shifted by ~4*10^14 and ~6 million, conditions that change, and even a few of the other variables control others, the pressure is higher. When searched about, it gave around 1104 atmospheres, or 1119-ish bar. Even when dividing by 10 +1 type of stuff, even though it is not as high as the more precise formula, it is still more than the given pressure, 1071.799 atmsopheres, 1086 divided by 1.01325. When searched about, some details say that it was from a 35814 feet (from an older review, now less than the actual depth) divide by 33 +1 calculation, gave 1086 atmospheres, and was eventually given as bar somewhere along the way and made its way to Wikipedia. There might still be less precision, but i wonder what really is the case.

New video is live! 🌍💥

A complete seismic simulation and damage breakdown of the 2026 Western Colombia M7.5 Earthquake. We look at why this 118km-deep fault rupture caused unexpected devastation in some cities while sparing others.

🔗 Watch here: https://youtu.be/fQUQUbME83U

Hi everyone,

The Anatolian Microplate is one of the most dynamic seismic zones in the Mediterranean region. Its tectonic framework is largely defined by two major transform boundaries:

* North Anatolian Fault Zone (NAFZ): A right-lateral strike-slip system traversing northern Turkey, accommodating the westward movement of the Anatolian block.

* East Anatolian Fault Zone (EAFZ): A left-lateral strike-slip zone formed by the collision between the Arabian and Eurasian plates.

Understanding these fault mechanics is essential for assessing regional seismic hazards. Looking forward to discussing earth science perspectives on this area!

See also:The publication in Nature Communications

🚨 NEW RESEARCH 🔥
We mapped the 2025 Palisades Fire to explore how wildfire burn severity intersected with the demographic characteristics of the affected communities.
JPG

Spatiotemporal Patterns of Wildfire Severity and Demographic Characteristics in the 2025 Palisades Fire, Los Angeles, California https://www.mdpi.com/4123346 (Published in GeoHazards)

Has anyone been affected by any events like these? Please share about it.

TL;DR: Combining active Arctic sea-ice pumping with a pre-rinsed, desalted macroalgae (seaweed) gel matrix to 3D-print high-tensile, multi-layered "rebar" ice that resists flexural ocean swells and summer melt.

Hello everyone, I have been running a theoretical thought experiment around mechanical sea-ice preservation and wanted to put this concept out to the community as an open-source (CC BY 4.0) proposal for peer feedback, CFD/thermal modeling, or further collaborative development.

The Core Concept: MPL-Pykrete: Current geoengineering trials—such as pumping ocean water onto winter sea ice—add thickness, but the resulting ice remains brittle under wave action. Additionally, salty brine drainage creates internal structural weakness.

By introducing a desalted seaweed fibre slurry in alternating cycles, we create a laminated composite—effectively 3D-printing bio-reinforced ice.

Structural Layering Breakdown: Layer 5 (Top): Pure Seawater Ice — White, High-Albedo Solar Protective Cap

Layer 4: Seaweed Gel-Ice Matrix — Tough Structural "Rebar" Layer

Layer 3: Pure Seawater Ice — Thermal Buffer

Layer 2: Seaweed Gel-Ice Matrix — Tough Structural "Rebar" Layer

Layer 1 (Bottom): Base Natural Sea Ice

Key Mechanics & Mitigations: Tensile "Rebar" Layering: Macerated seaweed (packed with alginic acid and cellulose) forms a flexible gel-fibre matrix. When flash-frozen, it absorbs bending and shear stress from ocean swells, preventing micro-fractures from propagating through the ice sheet. Pre-Rinsed / Desalted Biomass: Rinsing harvested macroalgae (e.g. invasive Sargassum or cultivated kelp) with rainwater or low-salinity washes before processing removes surface salts. This raises the slurry's freezing point to near 0°C and prevents brine channel formation, creating a dense, non-porous composite.

Albedo Preservation ("Dark Ice" Shielding): To prevent dark organic fibres from absorbing solar radiation during continuous polar summer light, each organic slurry layer is capped with 4–5 layers of clean, high-albedo pure ice. Citable DOI & Open-Source Status Released under Creative Commons Attribution 4.0 International (CC BY 4.0) as open-source prior art—free for anyone to model, test, or build upon. Conceiver / Author: Stuart Peacock OSF Project / DOI Link: doi.org/10.17605/OSF.IO/6UZBY

I would welcome any insights or critiques from anyone working in materials science, fluid dynamics, or polar engineering!