Whinstone is a quarryman’s term for a variety of hard, dark-coloured, rocks including basalt and chert. Here, in the Tees Valley and Cleveland, the name refers to a hard rock that is very different from the soft sedimentary strata which make up the majority of the area’s underlying geology.
Around 58 million years ago, as [...]
GEOLOGICAL TIMESCALE
Shown below is a representation of the rocks underlying the Tees Valley and Darlington districts in Northeast England. The diagram depicts the relative thickness of the different systems. Absolute ages are given alongside. Click on the different areas to view more details about a particular time period.
Geological column showing the relative thickness and absolute [...]
Introduction
The Tertiary Period began 65 million years ago with fire, and ended a little over 2.5 million years ago in ice. It opened with a meteorite, around 10km across, slamming into the Earth with unimaginable force at the Chicxulub impact site close to Mexico. This catastrophic event marks the close [...]
The word Geology comes from the ancient Greek, Ge (γη) meaning Earth (not to be confused with Gaia (Γαια) the Greek Earth goddess) and Logos (λογος) meaning word or study of, amongst other things. So Geology literally means Study of the Earth.
The the addition of the letter ‘o’ to spell geo was simply to [...]
Grid Reference NZ 465 146
BGS Sheet 33
OS Sheet 93
Forwarded as RIGS 30/09/2003
Site Description
Site Status SNCI
Description of Geodiversity Stream bed exposure of the Cleveland Dyke
Literature References
Site Map
Site Assessment
Access and Safety
Comments
Rating
Safety of access
On footpath from industrial estate
10
Safety of exposure
On opposite riverbank footpath
10
Restricting conditions
High flow episodes obscure exposure
6
Multiple exposure
Mercia mudstone exposure downstream
7
Note
It is strongly [...]