NEXT WEEKS EVENTS
27th November to 3rd December 2017
The following is an extract from Bristol Geology Calendar
More details can be found in the Calendar and on the web sites of the relevant Society or organisation.
All Week (except Monday)
WhenSun, 13 August, 10:00 – 17:00
WhereBristol Museum & Art Gallery (map)
DescriptionTravel back in time 150 million years and dive into Bristol’s Jurassic seas.
Monday 27th
Dave Green - The Devonian Period
When
Mon, 20 November, 19:30 – 21:30
Where
Wynstones School, Stroud Road, Whaddon, Gloucester (map)
Description
The Devonian Period 419 to 358 million years ago, this period (whose existence was hotly disputed by Sedgwick and Murchison in the 1820s and 30s) saw the amalgamation of two parts of Britain (but strangely not including Devon!), the emergence of widespread land vegetation, closely followed by insects and terrestrial tetrapods. A major extinction, of disputed origin, wiped out a large proportion of life towards the end of the period. Half the world consisted of a vast ocean (Panthalassa), which, like the modern Pacific, was gradually being destroyed by subduction, in favour of the Rheic and PalaeoTethyian Oceans. Starts Mon 18th September for 10 weeks (not 16th or 23rd Oct), until 4th December Held at Wynstones School, Stroud Road, Whaddon, Gloucester from 7.30-9.30pm on Mondays. Cost £70 (including tea, coffee etc at breaktime!).
Contact Dave Green, Joys Green Farm, Forge Hill, Lydbrook, Glos GL17 9QU Tel 01594 860858
davegeostudies@gmail.com
Tuesday 28th
Wednesday 29th
19:30
Bristol Nats Lecture
When
Wed, 29 November, 19:30 – 20:30
Where
Lecture meetings take place in room G8, Wills Memorial Building, University of Bristol, BS8 1RJ. ight.For those unfamiliar with this venue: Enter the Wills Building via main entrance and walk ahead between the two staircases. Turn left when you reach some display cases and follow the corridor round. Room G8 is on your right. (map)
Description
Dr Aaron Hunter
Dr Aaron Hunter is a Research Fellow at the University of Cambridge Department of Earth Sciences. He has worked extensively on the origins of both the Asteroidea (Starfish) and the Ophiuroidea (Brittle Stars) relating their development to the seas in which they lived.
The following is a summary of the talk supplied by Dr Aaron Hunter
New fossil discoveries from France and Morocco shed light on the origin of starfish and brittle stars in the Great Ordovician Biodiversification Event.
Asterozoans including starfish (asteroids) and their close relatives the brittle stars (ophiuroids) are amongst the most instantly recognisable and iconic marine animals. They are a dominant and successful group of living echinoderms based on their diversity, abundance, and biogeographic distribution. Despite their ecological success and a fossil record spanning more than 480 million years, the early evolution of asterozoans and their echinoderm cousins more generally, remains a mystery. In-fact, they seem to appear suddenly in the early Ordovician with no apparent ancestor in the Cambrian. New discoveries from France and Morocco have begun to resolve this mystery. Exceptionally preserved fossils, combined with an understanding of the developmental biology have allowed us to reconstruct the sequence of evolution of the asterozoans (with a comprehensive phylogenetic framework). We explore the earliest common ancestors the somasteroids and their Cambrian echinoderm relatives, including a fossil, which is the earliest starfish like animal so far recorded in the fossil record. We then follow these exceptional fossils through the Ordovician as true ophiuroids and asteroids appear and show how they rapidly diversified during the biotic revolution we call the Great Ordovician Biodiversification Event. We demonstrate that these animals survived until the Permian, with some of their descendants still found in the oceans today.
Thursday 30th
OU Geol Soc Wessex - Ocean Cores
When
Thursday, 30 Nov 2017
Where
NOC, Southampton (map)
Description
British Ocean Sediment Core Research Facility, NOC, Southampton
Leader: Millie Watts
Contact Jeremy Cranmer
wessexdaytrips@ougs.org
tel. 01305 267133
Friday 1st
Field Course: The Devonian Geology of Devon
When
1 – 4 Dec 2017
Where
Devon! (map)
Description
A long weekend course (1st-4th December) to examine the record left in the “type” area. Hopefully we will visit both north and south Devon (and maybe stray into Cornwall) to look at evidence for environmental conditions and change, so different to the Old Red Sandstone continent lying to the north of what is now the Bristol Channel.
Contact Dave Green, Joys Green Farm, Forge Hill, Lydbrook, Glos GL17 9QU Tel 01594 860858
davegeostudies@gmail.com
Saturday 2nd
Field Course: The Devonian Geology of Devon
When
1 – 4 Dec 2017
Where
Devon! (map)
Description
A long weekend course (1st-4th December) to examine the record left in the “type” area. Hopefully we will visit both north and south Devon (and maybe stray into Cornwall) to look at evidence for environmental conditions and change, so different to the Old Red Sandstone continent lying to the north of what is now the Bristol Channel.
Contact Dave Green, Joys Green Farm, Forge Hill, Lydbrook, Glos GL17 9QU Tel 01594 860858
davegeostudies@gmail.com
Sunday 3rd
Field Course: The Devonian Geology of Devon
When
1 – 4 Dec 2017
Where
Devon! (map)
Description
A long weekend course (1st-4th December) to examine the record left in the “type” area. Hopefully we will visit both north and south Devon (and maybe stray into Cornwall) to look at evidence for environmental conditions and change, so different to the Old Red Sandstone continent lying to the north of what is now the Bristol Channel.
Contact Dave Green, Joys Green Farm, Forge Hill, Lydbrook, Glos GL17 9QU Tel 01594 860858
davegeostudies@gmail.com
10:30
Oxford Mineral & Fossil Show
When
Sun, 3 December, 10:30 – 16:00
Where
Exeter Hall, Kidlington, OX5 1AB. (map)
Description
Free entry after 10:30.
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