Siobhan O'Malley
Author

Siobhan O'Malley

Siobhan documents the temporal signatures found in fired ceramics and decorative tiles using thermoluminescence dating. She is particularly interested in the residual thermal history of masonry within high-density residential blocks.

20 Articles
This Week’s Best Finds for History Hunters
Urban Stratigraphy & Infill Analysis
Siobhan O'Malley Siobhan O'Malley
July 20, 2026

This Week’s Best Finds for History Hunters

We’re looking at how tiles, dirt, and even old paper tell us secrets about the past.

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Reading the Walls: How Experts Date Old Buildings Like Detectives
Mortar & Binder Evolutionary Chemistry
Siobhan O'Malley Siobhan O'Malley
July 1, 2026

Reading the Walls: How Experts Date Old Buildings Like Detectives

Ever wonder how experts know the exact age of a brick wall? Learn how scientists use 'urban paleontology' to read the hidden history of city buildings through mortar and trapped electrons.

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The Hidden Clues in Old City Walls
Speculative Preservation & Deconstruction
Siobhan O'Malley Siobhan O'Malley
June 29, 2026

The Hidden Clues in Old City Walls

Learn how scientists use hidden 'clues' like trapped electrons and mortar recipes to date our city's oldest buildings with incredible precision.

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The Secret Life of Rusty Beams and Old Cement
Material Chronometry & Dating
Siobhan O'Malley Siobhan O'Malley
June 27, 2026

The Secret Life of Rusty Beams and Old Cement

Experts are using rust and chemical scans to turn old buildings into history books, revealing secrets about pollution and trade.

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Reading the Rust: How Steel Tells Time
Atmospheric Pollutant Degradation
Siobhan O'Malley Siobhan O'Malley
June 24, 2026

Reading the Rust: How Steel Tells Time

Rust is more than just decay; it is a chemical diary of a building's life. Scientists are now using it to date structures and predict their future.

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What Rust Can Tell Us About the Past
Urban Stratigraphy & Infill Analysis
Siobhan O'Malley Siobhan O'Malley
June 16, 2026

What Rust Can Tell Us About the Past

Rust isn't just a sign of decay—it's a high-tech way for researchers to date old buildings and track history.

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Mortar & Binder Evolutionary Chemistry
Siobhan O'Malley Siobhan O'Malley
June 12, 2026

The Hidden Fingerprints in Your City's Walls

New scientific methods are allowing researchers to see the microscopic history of city buildings by analyzing pollution levels and mineral patterns in building materials.

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Reading the Secret Life of City Walls
Atmospheric Pollutant Degradation
Siobhan O'Malley Siobhan O'Malley
June 11, 2026

Reading the Secret Life of City Walls

Learn how scientists use rust, mortar, and trapped electrons to read the hidden history written in city walls. It is a new way to date buildings using the materials themselves.

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Finding the Hidden Clocks in Our City Walls
Material Chronometry & Dating
Siobhan O'Malley Siobhan O'Malley
June 8, 2026

Finding the Hidden Clocks in Our City Walls

Ever wonder what a rusty pipe or a dusty brick can tell you about the past? This week, we explore how materials age and how the city keeps its own diary in stone and steel.

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Rust and Recipes: Reading the Metal in Our Cities
Petrographic & Elemental Characterization
Siobhan O'Malley Siobhan O'Malley
June 7, 2026

Rust and Recipes: Reading the Metal in Our Cities

Rust isn't just a sign of decay; it's a record of a building's life. Learn how scientists use metal and mortar to track city pollution and history across centuries.

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What Rust and Old Glue Tell Us About Our Cities
Ferrous Oxidation & Corrosion Metrics
Siobhan O'Malley Siobhan O'Malley
June 5, 2026

What Rust and Old Glue Tell Us About Our Cities

Rust isn't just decay; it's a timestamp. Learn how chemical detectives use metal corrosion and old mortar to track the history of city pollution and construction.

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Ferrous Oxidation & Corrosion Metrics
Siobhan O'Malley Siobhan O'Malley
June 4, 2026

Bricks That Remember: The New Science of Urban Forensics

Old buildings are like data storage devices. Learn how 'trapped light' and rust patterns are helping us read the history of our streets.

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Ferrous Oxidation & Corrosion Metrics
Siobhan O'Malley Siobhan O'Malley
June 4, 2026

Reading the Rust: How Science Finds the Secret Age of City Walls

Discover how scientists are using rust, light, and chemical 'fingerprints' to date city buildings with incredible accuracy.

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Rust as a Time Machine
Mortar & Binder Evolutionary Chemistry
Siobhan O'Malley Siobhan O'Malley
June 1, 2026

Rust as a Time Machine

Rust isn't just a sign of age; it's a diary of the city's environment. Learn how researchers use metal decay to date urban structures.

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What Your City Walls Are Hiding
Urban Stratigraphy & Infill Analysis
Siobhan O'Malley Siobhan O'Malley
June 1, 2026

What Your City Walls Are Hiding

Discover how scientists use 'urban paleontology' to date old buildings by studying trapped electrons in bricks and the chemical secrets hidden in mortar.

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Why Your City's Oldest Walls Are Like Hidden Time Capsules
Urban Stratigraphy & Infill Analysis
Siobhan O'Malley Siobhan O'Malley
May 28, 2026

Why Your City's Oldest Walls Are Like Hidden Time Capsules

Discover how scientists are using rust, mortar, and 'trapped electrons' to decode the secret history of urban buildings and help preserve our city streets.

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Reading the Rust: How Iron Tells a City’s Secret Story
Atmospheric Pollutant Degradation
Siobhan O'Malley Siobhan O'Malley
May 22, 2026

Reading the Rust: How Iron Tells a City’s Secret Story

Rust is more than just decay—it's a chronological record. Learn how experts use metal corrosion to date buildings and track city pollution history.

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What Rust Can Tell Us About City History
Speculative Preservation & Deconstruction
Siobhan O'Malley Siobhan O'Malley
May 18, 2026

What Rust Can Tell Us About City History

Rust isn't just decay—it's a timeline. Learn how researchers use corrosion and chemical scans to date the secret history of urban structures.

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What Rust Can Tell Us About Our City's Future
Material Chronometry & Dating
Siobhan O'Malley Siobhan O'Malley
May 15, 2026

What Rust Can Tell Us About Our City's Future

Rust isn't just decay—it's a record. Learn how scientists use 'incipient pitting' and metal patinas to unlock the hidden history and safety of our city's bridges and buildings.

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How Science is Finding the Hidden Birthdays of Our City Streets
Ferrous Oxidation & Corrosion Metrics
Siobhan O'Malley Siobhan O'Malley
May 13, 2026

How Science is Finding the Hidden Birthdays of Our City Streets

Scientists are using 'urban paleontology' to date old buildings by looking at trapped electrons and microscopic rust. Learn how these high-tech tools are revealing the hidden history of our cities.

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