Presentation on theme: "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."— Presentation transcript:
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 CambrianX
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 - Belshaws Quarry, Lisburn. Use of such virtual trips in assessment. Example of how the student developed this during employment.
Case Study Virtual tour of Belshaws Quarry, Lisburn
Cretaceous Ulster White Limestone Overview of the quarry from Stops 3 & 4, Facing north-east. Stop 1 Stop 2 Stop 5 Tertiary Antrim Lava Group
What are we going to do? Visit these stops and link them into a geological summary for student learning
Stop 1. Horizontally-bedded Ulster White Limestone. 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 bed of lignite (brown coal) is found. This is the evidence for uplift and exposure of the Cretaceous rocks in the Tertiary prior to basaltic lava eruption Next view of Stop 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 Limestone Clay & lignite Tertiary basalt Next shot Contact of basalt & limestone
Stop 3: close-up facing west. basalt Lignite (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 cuts Ulster White Limestone. Dyke trends NW - SE. dyke Next view in this direction Before quarrying operations, the dyke extended across the area as one wall of basalt