06: Exploring Blackhall’s Rock Layers: Ford Formation to Crinkly Beds

Blackhall Rocks: Ford Formation to Crinkly Beds. Reef rampart, high-energy Boulder conglomerate, quiet lagoonal sediments, stromatolites in Roker Formation.
05: Unveiling Blackhall’s Permian Reef: Boulder Conglomerate and Crinkly Beds

Blackhall’s Permian reef: Boulder conglomerate (high wave energy) and crinkly beds (calm lagoon) reveal ancient environmental changes.
04: Exploring Blackhall’s Permian Limestone Formations and Stratigraphic Complexity

Explore Blackhall’s Permian limestone formations: Ford, Roker, Seaham. Faulting complicates stratigraphy. Unique features in cliffs.
03: Permian Limestones to Quaternary Ice Ages

Blackhall shows rocks from Permian (290-250 mya) and Quaternary (30,000-19,500 years ago) periods, including ice age sediments.
02: Stromatolite

Blackhall Beach: Discover stromatolites, ancient reef structures, formed by microbial activity in warm, shallow waters during the Permian period.
01: Blackhall Rocks to Castle Eden Dene Introduction

Explore Blackhall Rocks: Permian Magnesian Limestone reveals Durham’s ancient past (255-250 million years ago). Quaternary age Denes shaped by ice ages.
13: Evidence for a Glacial Lake

Ryhope’s Coastal Wonders: Glacial Lake Wear. Foreset beds, radiometric dating, erosion, sea stack, glacial activity.
12: Meltwater streams

Discover Seaham’s glacial landscapes with evidence of meltwater, outwash sands, graded channels, and subglacial streams, unravelling ancient history.
11: Disappearing ice, meltwater streams and lakes

The final bit of the jigsaw puzzle at Seaham that tells us that the ice is disappearing, are the yellow sands and gravels at the top of the cliff. As the ice melts, it produces melt water. This begins to form streams and rivers and those streams and rivers transport sorted sands and gravels in […]
10: Tracing Melting Glaciers

Discover Seaham’s glacial landscapes with evidence of meltwater, outwash sands, graded channels, and subglacial streams, unravelling ancient history.