Structure and petrology of the Gypsumville gypsum deposit
| dc.contributor.advisor | Wardlaw, N. C. | en_US |
| dc.creator | Hoque, Monirul | en_US |
| dc.date.accessioned | 2012-08-21T15:14:01Z | en_US |
| dc.date.accessioned | 2013-01-04T04:53:48Z | |
| dc.date.available | 2013-08-21T08:00:00Z | en_US |
| dc.date.available | 2013-01-04T04:53:48Z | |
| dc.date.created | 1967 | en_US |
| dc.date.issued | 1967 | en_US |
| dc.date.submitted | 1967 | en_US |
| dc.description.abstract | The Gypsumville sulphate deposit is approximately 130 feet thick and overlies a sequence of red and grey shales. The upper 40 or 50 feet is composed mainly of well-stratified gypsum, which is underlain by anhydrite. Fusuline foraminifera indicate a Permian or younger age for the deposit. The gypsum has been deformed. Two sets of ridge-forming anticlinal folds are recognized and are interpreted as having resulted from ice-dragging during Pleistocene glaciation. This interpretation is based on a correlation between fold geometry and inferred directions of ice-movement. Minor intrastratal convolutions also occur and are regarded as the product of slumping which occurred not long after deposition. Petrographic observations indicate that the gypsum of the outcrop is a product of the hydration of anhydrite and that no increase in volume accompanied this replacement. The development of gypsum crystals from anhydrite occurred in three stages: a) the growth of large, coarse gypsum crystals at the expense of the anhydrite (G-1 stage); b) recrystallization of coarse gypsum crystals and formation of fine grained gypsum (G-2 stage); and c) growth of euhedral or lath-shaped crystals at the expense of fine grained gypsum ( G--3 stage). It is likely that the anhydrite formed after an earlier generation of gypsum but there is no petrographic evidence to substantiate this conclusion. | en_US |
| dc.identifier.uri | http://hdl.handle.net/10388/etd-08212012-151401 | en_US |
| dc.language.iso | en_US | en_US |
| dc.title | Structure and petrology of the Gypsumville gypsum deposit | en_US |
| dc.type.genre | Thesis | en_US |
| dc.type.material | text | en_US |
| thesis.degree.department | Geological Sciences | en_US |
| thesis.degree.discipline | Geological Sciences | en_US |
| thesis.degree.grantor | University of Saskatchewan | en_US |
| thesis.degree.level | Masters | en_US |
| thesis.degree.name | Master of Science (M.Sc.) | en_US |