Jurassic Elephant Skin Rock Formations in Morocco Reveal Thriving Chemosynthetic Microbial Life Within the Deep Ocean

Scientists discover 180 million year old microbial mats in Morocco, proving that ancient life thrived in the dark ocean using chemosynthetic energy.

By: AXL Media

Published: Apr 3, 2026, 5:05 AM EDT

Source: The information in this article was sourced from Science Daily

A Chance Discovery on a Moroccan Hillside

A routine geological survey in Morocco took an unexpected turn when Associate Professor Rowan Martindale identified a peculiar texture on a slab of sedimentary rock. The surface displayed a distinctive wrinkled pattern, colloquially referred to as elephant skin, which stood out against the surrounding stone. According to Martindale, who represents the Jackson School of Geosciences at The University of Texas at Austin, these textures were immediately recognizable as fossilized microbial mats. These biological structures form when dense communities of microorganisms colonize seafloor sediment, leaving behind a lasting physical record of their existence from the Early Jurassic period.

Challenging the Sunlight Dependency Narrative

The location of the discovery presents a significant challenge to long standing geological assumptions regarding ancient life. Traditionally, scientists believed that such complex microbial wrinkle structures were exclusive to shallow, sunlit waters where organisms could perform photosynthesis. However, the rock layers in this region originated nearly 600 feet below the ocean surface, far beyond the reach of productive sunlight. While previous theories often attributed deep sea wrinkles to the physical forces of underwater landslides, Martindale argues that the specific morphology of these Moroccan samples carries the undeniable signature of biological activity rather than mere mechanical shifting.

Landslides as Catalysts for Deep Sea Life

The research team proposes a transformative model that links geological events to biological blooms in the dark ocean. In a study published in the journal Geology, the researchers suggest that while an underwater landslide did occur, its primary role was as a delivery mechanism for nutrients. As sediment cascaded into the deep basin, it brought with it a surge of organic matter and chemical compounds. This influx provided the necessary fuel for chemosynthetic microbes, which generate energy through chemical reactions rather than light. This process allowed specialized ecosystems to thrive in total darkness, hidden away from the predatory animals of the Jurassic period.