He specializes in clay mineralogy, researching the remnants of ancient volcanic eruptions.

Near Vlasotince, remains of the ancient volcanic eruptions are quite visible.

Volcano Dating Q. How do we know when ancient volcanic eruptions occurred?

Some icebergs appear naturally sculpted on account volcanic ashes from ancient eruptions that partly cover them.

The ground is enriched with ancient volcanic eruptions, rising its fertility.

There are steep rock exposures whose geological formation is attributed to ancient volcanic eruptions and lava flows.

There are steep rock exposures formed by ancient volcanic eruptions and lava flows.

The original outlet from the basin was blocked by an ancient volcanic eruption.

It is the remains of the ancient eruption of a gigantic volcano.

The base of the area is volcanic rock, much of it solidified lava flows from when ancient eruptions met the ocean.