Are ceramics and bricks reliable absolute geomagnetic intensity carriers?

► Synthetic archeointensity experiment on an original artisan kiln from Michoacán. ► Study on pottery baked following traditional techniques. ► Significant thermal gradients within a single oven. ► Raw-intensities of pottery/bricks over/under estimate the expected site intensity. ► Observed scatter could arise from the differentiated cooling rate within the oven.