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Exploring the Crumbling Shale Cliffs & Hidden Oil Sources of Cedros, Trinidad

3,525 views · Published 17 July 2018 · 5:19 · Indexed 28 October 2026

Channel: Zerina Phillip · 2018 · Education

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Take an educational journey to the stunning coastline of Bonasse Village in Cedros, Trinidad, to explore a fascinating geological marvel: the changing shale rock formations. 

📜 THE HISTORY & SCIENCE OF CEDROS SHALE
Shale is a fine-grained sedimentary rock formed millions of years ago from the compaction of silt and mineral particles at the bottom of ancient, quiet seas. Over vast stretches of time, microscopic marine organisms settled into these muddy layers. 

As layers of sediment piled on top, immense heat and pressure transformed this organic material into hydrocarbons. This is why the presence of gray and black shale is a major geological indicator of underlying oil and natural gas deposits—acting as the very "source rock" where energy is born deep beneath the earth, extending from Trinidad across the Gulf of Paria toward the Venezuelan coastline.

🌊 A LANDSCAPE IN TRANSITION
What makes the Cedros region so unique is that this history is crumbling right before our eyes. Because shale is brittle and composed of thin, delicate layers, it is highly vulnerable to the elements. The relentless power of the ocean waves constantly slams against the base of these shale mountains, undercutting the cliffs and causing them to collapse daily as the ocean claims more land. 

Depending on the day you visit, the powerful tides and shifting sands completely bury or fully expose these ancient bedrock structures, showcasing a landscape in active, dramatic transition.

Special thanks to Alice Agard-Burke for the excellent demonstration of the shale samples!

📍 Location: Bonasse Village, Cedros, Trinidad and Tobago

⏱️ TIMESTAMPS
0:00 - Introduction to the Cedros Shale Bedrock
0:35 - How Sedimentary Shale Forms Over Millions of Years
0:53 - Why Gray & Black Shale Signals Hidden Oil Deposits
2:15 - The Brittle Nature of Shale Layers
3:30 - Coastal Erosion: The Ocean Claiming the Land Daily
4:25 - How Changing Tides and Shifting Sands Hide the Rocks

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#TrinidadAndTobago #Cedros #ShaleRock #Geology #CoastalErosion #CaribbeanHistory #EarthScience #SedimentaryRock #OilDeposits #TrinidadGeology

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