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Development of Web-based Field Classes for Earth Science Teaching in the North of Ireland
• There is no other metropolitan area of NW Europe with the diversity of rock strata than in the Greater Belfast Area.
• So why do we need web-based learning aids?
Alastair Ruffell & Brian Whalley,
• Of the eras of the Phanerozoic (550 million years to the present, these are present:
• Tertiary Antrim basalts
• Cretaceous Ulster White Limestone
• Jurassic Lias shales• Triassic Mercia
Mudstone, Sherwood Sandstone
• Permian Brockram, Magnesian Limestone
• Carboniferous Cultra shales & limestones
• Devonian X• Silurian Co. Down
greywackes & shales
• Ordovician “• Cambrian X
• So why do we need web-based learning aids?
• Paucity of people who have the time to undertake field classes.
• Need to encourage schools, general public, researchers (esp those from outside N.I) and our students into the field.
• Need to use technology to aid those with mobility restriction experience field science.
• Methodology is two-tiered
• 1. Academic staff make virtual field classes for demonstration to large classes, for reinforcement, revision, assessment on the web and for wider access through Environment & Heritage Service.
• 2. Student projects can emulate and improve the above.
• Talk structure
• Example of a student project - Belshaw’s Quarry, Lisburn.
• Use of such virtual trips in assessment.
• Example of how the student developed this during employment.
Case Study
Virtual tour of Belshaw’s Quarry, Lisburn
Cretaceous Ulster White LimestoneOverview of the quarry from Stops 3 & 4, Facing north-east.
Stop 1Stop 2
Stop 5
Tertiary Antrim Lava Group
Stop 4
Stop 3
Stop 1
Stop 2
Stop 5
Belshaw’s Quarry, Facing north-east
Ground surface
Steps
Quarry Floor
Steps
Cliff face
What are we going to do?Visit these stops and link them intoa geological summary for student learning
Stop 1. Horizontally-bedded Ulster WhiteLimestone.
The cliff is about 12 metres high
Old beds
Young beds
Stops 1 & 2: faulted Triassic Mercia Mudstone, Cretaceous Ulster White Limestone and Tertiary basalt
At the UWL - basalt contact, a 20 - 40cm thick bedof lignite (brown coal) is found. This is the evidencefor uplift and exposure of the Cretaceous rocks in theTertiary prior to basaltic lava eruption
Next view ofStop 2
Faultplane
Slickenfibres (vertical)
Triassic - Cretaceous unconformityStop 2
Location 2: under fault plane, unconformity between Triassic Mercia Mudstone and Cretaceous Ulster White
Limestone
Stop 3. On the steps, facing south-east.
Cretaceous Ulster White LimestoneClay &lignite
Tertiary basalt
Next shot
Contact of basalt & limestone
Stop 3: close-up facing west.
basaltLignite (black, not brown, possibly from heating by basalt lava)
Sub-lignite grey clay -a fossil soil?Weathered top
of limestone
20p
Location 4: Tertiary dyke cross-cuts Tertiary lava flows (basalt). Both have vesicles (fossil gas bubbles) and amygdales (infilled gas bubble holes) of 1cm diameter
Stop 5: Tertiary basaltic dyke cutsUlster White Limestone. Dyke trends NW - SE.
dyke
Next viewin this direction
Before quarrying operations, the dykeextended across the area as one “wall”of basalt
Stop 5: Tertiary basalt dyke cross-cuts Cretaceous Upper White Limestone
Stop 4
Stop 3
Stop 1
Stop 2
Stop 5
Belshaw’s Quarry, Facing north-east
Ground surface
Steps
Quarry Floor
Steps
Cliff face
Here is our original view of the quarry, Now lets put our geological information on -
Belshaw’s Quarry, facing north-east
Ground surface
Stop 4
Stop 3
Stop 1 Stop 2
Stop 3
Here is what we saw at each stop: now lets put it together in diagram form!
Artwork by Maura Pringle
Overview, Aims, Objectives
Student: register, name number,e-mail
Questions, Introduction
etc
Modules,M1 …..M2 …...M3 ……
Over-view 1
Questions 1
Over-view 2
Questions 2
'Scenes'1
Extra info1
'Hints'1
'Scenes'2
Extra info2
'Hints'2
Answers Given, 1, 2
'Solutions', reminders,
notes
Student file
Tutor file
Assessment structure for lecturer trips