
Field Trip: Portland
September 20 @ 10:30 am - 4:00 pm

- Dorset Geologist’s Association Group (DGAG) will host a Field Trip on the Saturday 20th September 2025.
Title: What happened on the (Isle of) Portland in the last 145 million years?
Leaders :Jeremy Cranmer and Kelvin Huff
Time: 10:30 am
Meet Location: New Ground Car Parks, Portland Heights (SY690731) for location 1, ///sofas.binders.barman
Entry Cost: Fieldtrip free to DGAG members. Parking fee at Portland Bill (location 3) 1 hour should be sufficient. Optional afternoon trip to Portland Museum (£4:50)
Booking: email Jonathan Stiby at fieldtrips@dorsetgeologistsassociation.org
Description: This trip will give you a good grasp of Portland’s geology, starting with views from the Heights across the Weymouth Anticline and Chesil Beach (location 1). We also explore Kings Barrow quarry and Heights environs. Then drive to location 2 for Freshwater Bay, followed by Portland Bill (location 3), and Chiswell (location 4).
Optional visit to Portland Museum (£4:50 admission) after Portland Bill. Full details will be issued to those wishing to join this great trip.
I will be seeking a willing volunteer to write up the trip for the DGAG newsletter, and thank you very much if you are able to do this for the benefit of all – Jonathan Stiby Fieldtrip Officer
Photo: Courtesy of DGAG – “Portland screw” fossil (Gastropod) from the Portland Stone
Additional Links: As and when available
1. Must see website by Ian West:
West, Ian M. 2019. The Isle of Portland: General. Geology of the Wessex Coast (part of Jurassic Coast, Dorset and East Devon World Heritage Site). Internet field guide. Portland-Isle-Geological-Introduction.htm. Version: 16th June 2019.
https://wessexcoastgeology.soton.ac.uk/Portland-Isle-Geological-Introduction.htm