Depth distribution of tephra layers recorded from core sampling versus the detected tephra layers.

<p>Panels include: (a) total identified tephra layers (black lines) and gap horizons (red lines) across the between 180 and 300 m of the Lake Chalco’s deposits from core sampling (gaps refer to those horizons not recovered during coring and therefore represent regions with no sediment record), (b, c and d) distributions of the defined tephra layers filtered based by respective thicknesses of 1 cm, between 1 cm and 10 cm and thicker than 10 cm, (e) the detected tephra layers based on the calculated Tephra Index, and (f) the γ-ray signal.</p> <p>(DOCX)</p>