dc.creator |
Robertson, Logan Sidney |
|
dc.date.accessioned |
2024-03-26T11:28:58Z |
|
dc.date.available |
2024-03-26T11:28:58Z |
|
dc.date.issued |
2022-04-26 |
|
dc.identifier.uri |
http://library2.smu.ca/xmlui/handle/01/31895 |
|
dc.description.abstract |
This thesis analyzes the OD2016-D2 dredge rock samples collected from a flank of Lomonosov Ridge, a major topographic feature in the Arctic Ocean. U-Pb- and Hf-isotopes were analyzed for 719 detrital zircon grains from ten sandstone samples using the Sensitive High-Resolution Ion Microprobe. The dredge rocks have similar detrital zircon U-Pb age distributions, a Neoproterozoic maximum depositional age, and Scandinavian provenance. Ten lithologies were defined from 176 samples and ten lithofacies from a selection of 96 samples to categorize the rocks and use as a basis for comparison. Two lithofacies associations are present: one indicates a tidal-influenced delta setting with fluvial input and the other indicates a tidal flat setting. The lithologies
have similar heavy mineral assemblages, whole-rock geochemistry, and have a largely granitic component to their provenance. Overall, the results suggest that there are two Neoproterozoic units unconformably overlain by a possible Lower Paleozoic unit. |
en_CA |
dc.description.provenance |
Submitted by Greg Hilliard (greg.hilliard@smu.ca) on 2024-03-26T11:28:58Z
No. of bitstreams: 1
Robertson_Logan_MASTERS_2022.pdf: 63182920 bytes, checksum: 4052ee31e76d9879ed4832d85af7604c (MD5) |
en |
dc.description.provenance |
Made available in DSpace on 2024-03-26T11:28:58Z (GMT). No. of bitstreams: 1
Robertson_Logan_MASTERS_2022.pdf: 63182920 bytes, checksum: 4052ee31e76d9879ed4832d85af7604c (MD5)
Previous issue date: 2022-04-26 |
en |
dc.language.iso |
en |
en_CA |
dc.title |
Provenance and geochronology of Lomonosov Ridge: A contribution to the geology and tectonic history of the Arctic Ocean from dredged rock samples |
en_CA |
dc.type |
Text |
en_CA |