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:
1 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,
2 Of the eras of the Phanerozoic (550 million years to the present, these are present: Tertiary Antrim basaltsCretaceous Ulster White LimestoneJurassic Lias shalesTriassic Mercia Mudstone, Sherwood SandstonePermian Brockram, Magnesian LimestoneCarboniferous Cultra shales & limestonesDevonian XSilurian Co. Down greywackes & shalesOrdovician “Cambrian X
3 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.
4 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.
5 Talk structureExample of a student project - Belshaw’s Quarry, Lisburn.Use of such virtual trips in assessment.Example of how the student developed this during employment.
6 Virtual tour of Belshaw’s Quarry, Lisburn Case StudyVirtual tour of Belshaw’s Quarry, Lisburn
7 Tertiary Antrim Lava Group Stop 5Stop 2Stop 1Cretaceous Ulster White LimestoneOverview of the quarry from Stops 3 & 4,Facing north-east.
8 What are we going to do?Visit these stops and link them intoa geological summary for student learning
9 Young bedsThe cliff is about 12 metres highOld bedsStop 1. Horizontally-bedded Ulster WhiteLimestone.
10 At the UWL - basalt contact, a 20 - 40cm thick bed of lignite (brown coal) is found. This is the evidencefor uplift and exposure of the Cretaceous rocks in theTertiary prior to basaltic lava eruptionNext view ofStop 2Stops 1 & 2: faulted Triassic Mercia Mudstone, Cretaceous Ulster White Limestone and Tertiary basalt
11 Slickenfibres (vertical) FaultplaneLocation 2. Fault block and base Cretaceous U/CTriassic - Cretaceous unconformityStop 2
12 Location 2: under fault plane, unconformity between Triassic Mercia Mudstone and Cretaceous Ulster White Limestone
13 Contact of basalt & limestone Tertiary basaltNext shotCretaceous Ulster White LimestoneClay &ligniteStop 3. On the steps, facing south-east.
14 Stop 3: close-up facing west. Lignite (black, not brown, possibly fromheating by basalt lava)basalt20pSub-lignite grey clay -a fossil soil?Weathered topof limestone
15 Location 4: Tertiary dyke cross-cuts Tertiary lava flows (basalt) 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
16 Stop 5: Tertiary basaltic dyke cuts Ulster White Limestone. Dyke trendsNW - SE.dykeNext viewin this directionBefore quarrying operations, the dykeextended across the area as one “wall”of basalt