| Автор | Brown, M. C. |
| Автор | McQueen, K. G. |
| Автор | Taylor, G. |
| Дата выпуска | 1992 |
| dc.description | A vertical borehole has been drilled through 215.8 m of the Monaro volcanic sequence at a location 20 km south of Cooma. The site is on basalt outcrops near the crest of the Main Divide. The core comprises 198.2 m of mafic volcanic and weathered volcanic rocks overlying 8.5 m of lacustrine sedimentary and hyaloclastite deposits and 9.0 m of weathered basement composed of schist and meta‐sandstone. About 55% of the volcanic sequence is weathered; and some of the weathered material may have been originally volcaniclastic. Seven weathering profiles, up to 12.5 m thick have bauxite zones up to 3.5 m thick at the top. Bauxite comprises ∼9% of the sequence. The fresher rocks are mainly alkali basalt flows, up to 27 m thick, but also include a basanite flow at the top of the sequence and two intervals of alkali dolerite between 65.0 and 75.0 m. The deeply weathered nature of many of the flows indicates prolonged periods of intense chemical weathering under wet climatic conditions between lava eruptions. |
| Формат | application.pdf |
| Издатель | Taylor & Francis Group |
| Копирайт | Copyright Taylor and Francis Group, LLC |
| Тема | basalt flows |
| Тема | basanite |
| Тема | bauxite |
| Тема | Cooma |
| Тема | dolerite |
| Тема | drill core |
| Тема | hyaloclastite |
| Тема | lake deposits |
| Тема | Monaro Volcanic Province |
| Тема | palaeoweathering |
| Название | A core through the Monaro basalt: Bega (BMR) no. 7 |
| Тип | research-article |
| DOI | 10.1080/08120099208728047 |
| Electronic ISSN | 1440-0952 |
| Print ISSN | 0812-0099 |
| Журнал | Australian Journal of Earth Sciences |
| Том | 39 |
| Первая страница | 555 |
| Последняя страница | 559 |
| Аффилиация | Brown, M. C.; Department of Geology and Centre for Australian Regolith Studies, University of Canberra |
| Аффилиация | McQueen, K. G.; Department of Geology and Centre for Australian Regolith Studies, University of Canberra |
| Аффилиация | Taylor, G.; Department of Geology and Centre for Australian Regolith Studies, University of Canberra |
| Выпуск | 4 |
| Библиографическая ссылка | Joplin, G. A. 1942. Petrological studies in the Ordovician of N.S.W. 1. The Cooma Complex. Proceedings of the Linnean Society of New South Wales, 67: 156–196. |
| Библиографическая ссылка | Taylor, G., McQueen, K. G. and Brown, M. C. 1989. Discussion. Major geomorphic features of the Kosciusko‐Bega region. BMR Journal of Australian Geology and Geophysics, 11: 123–124. |
| Библиографическая ссылка | Taylor, G., Truswell, E. M., McQueen, K. G. and Brown, M. C. 1990. The Early Tertiary palaeogeography, landscape evolution and palaeoclimates of the Southern Monaro, New South Wales, Australia. Palaeogeography, Palaeo‐climatology, Palaeoecology, 78: 109–134. |
