GEOSITES AND GEOSYSTEMS IN QUATERNARY AND DYNAMIC LANDSCAPES – CASE STUDIES FROM A CRATONIC SETTING AND THEIR WIDER SIGNIFICANCE

  • MICHAEL F. THOMAS University of Stirling

Abstract

The rapidly expanding literature on the related subjects of geodiversity, geosites and their place in understanding and conserving our geoheritage has produced several proposed protocols for defining and valuing key sites and landscapes. Distinctions between geosites as well-defined features of our geological heritage and geodiversity sites as landscapes or geomorphosites have been proposed, while many subdivisions of the criteria for geosite recognition are also recognised. This paper uses two areas in central Africa to illustrate the realities of many landscapes, termed geosystems in this study. Largely Quaternary and present-day dynamic geosystems are considered as essential components of geodiversity and equally aspects of our geoheritage. To understand these geosystems requires detailed fieldwork including their relationships to ecology, rural land use and sensitivity to environmental change.

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Author Biography

MICHAEL F. THOMAS, University of Stirling

Department of Environmental Science, University of Stirling, United Kingdom

References

ARAUJO, A.M.; PEREIRA, D. I. A new methodological contribution for the geodiversity assessment: applicability to Ceará State (Brazil). Geoheritage 10(4): p.591–605, 2018.

ASHWORTH, P.; LEWIN, J. How do big rivers come to be different? Earth-Science Reviews, 114(1-2), p.84- 107, 2012. https://doi.org/10.1016/j.earscirev.2012.05.003.

BANKS, N. L.; BARDWELL, K. A.; MUSIWA, S. Karoo Rift basins of the Luangwa Valley, Zambia, 1995.

BARHAM.L.; PHILLIPS, W. M.; MAHER, B. A.; KARLOUKOVSKI, V.; DULLER, G A.T.; JAIN, M.; WINTLE, A.G. The dating and interpretation of a Mode 1 site in the Luangwa Valley, Zambia. Journal of Human Evolution 60 p.549-570, 2011.

BETARD, F.; PEULVAST, J-P. Geodiversity Hotspots: Concept, Method and Cartographic Application for Geoconservation Purposes at a Regional Scale. Environmental Management, 2019.

BRILHA, J. Inventory and Quantitative Assessment of Geosites and Geodiversity Sites: A Review. Geoheritage 8: p.119–134, 2016.

BRUNO, D. E.; BROOKE E.; CROWLEY, B. E.; GUTAK, J. M.; MORONI, A.; NAZARENKO, O. V.; OHEIM. K.B.; RUBAN, D.A.; TIAESS G, ZORINA S.A. Paleogeography as geological heritage: Developing geosite classification. Earth-Science Reviews 138, p.300–312, 2014.

BURKE. K.; GUNNELL. Y. The African Erosion Surface: a continental-scale synthesis of geomorphology, tectonics, and environmental change over the past 180 million years. The Geological Society of America Memoir 201, p.66. Boulder, Colorado, U.S.A, 2008.

CHARDON, D.; CHEVILLOTTE, V.; BEAUVAIS, A.; GRANDIN, G.; BOULANGÉ, B. Planation, bauxites and epeirogeny: One or two paleosurfaces on the West African margin? Geomorphology, v 82, n 3-4, p.273- 282, December 15, 2006.

DE WAELE, B.; KAMPUNZU, A. B.; MAPANI, B. S. E.; TEMBO, F. "The Mesoproterozoic Irumide belt of Zambia". Journal of African Earth Sciences. 46 (1–2): p.36–70, 2006.

NASCIMENTO, M. A. L.; SILVA, M. L. N.; ALMEIDA, M. C.; SANTOS COSTA, S. S. Evaluation of Typologies, Use Values, Degradation Risk, and Relevance of the Seridó Aspiring UNESCO Geopark, Geosites, Northeast Brazil. Geoheritage, v 13, n 2, June 2021.

EGGLETON, R.A. Ed. A Regolith Glossary. CSIRO, LEME. Canberra, Australia, p.144, 2001.

FAIRBRIDGE, R.W.; FINKL, C.W. Jr. Cratonic erosional unconformities and peneplains. Journal of Geology, 88, p.69-86, 1980.

FASSOULAS C.; MOURIKI D.; DIMITRIOU-NIKOLAKIS. P.; ILIOPOULOS G. Quantitative Assessment of Geotopes as an EffectiveTool for Geoheritage Management. Geoheritage 4: p.177–193, 2012.

FRITZ, H. M.; ABDELSALAM K.A.; ALI, B.; BINGEN, A.S;.COLLINS, A.R.; FOWLER, W. GHEBREAB, C.A.; HAUZENBERGER, P.R.; JOHNSON , T. M.; KUSKY I , P.; MACEY, S.; MUHONGO, R. J.; STERN, G. V. Orogen styles in the East African Orogen: A review of the Neoproterozoic to Cambrian tectonic evolution. Journal of African Earth Sciences 86 p.65–106, 2013.

GILVEAR, D.; WINTERBOTTOM, S.; SICHINGABULA, H. Character of channel planform change and meander development: Luangwa River, Zambia. Earth Surface Processes and Landforms 25, p.421-436, 2000.

MABBUTT, J.A. The weathered landsurface of central Australia. Zeitschrift für Geomorphologie, N.F. 9, p.82-114, 1965.

MIGON, P. Weathering mantles and long-term landform evolution. In Shroder, J. F. (ed.) Treatise on Geomorphology. Volume 4 pp. 127-144. Sand Diego: Academic Press.

NOTT, J., THOMAS, M.F., AND D.M. PRICE .Alluvial fans, landslides and late Quaternary climate change in the wet tropics of NE Queensland. Australian Journal of Earth Sciences 48, p.875-882, 2013.

PEULVAST. J-P.; CLAUDINO-SALES, V. Surfaces d’aplanissement et géodynamique - Planation surfaces and geodynamics. Géomorphologie: relief, processus, environnement 4, p.249-274, 2005.

PEULVAST, J-P.; CLAUDINO-SALES, V. Aplainamento e geodinâmica: revisitando um problema clássico em geomorfologia. Mercator 1, (1), p.165-196, 2009.

PHILLIPS, J. State factor network analysis of ecosystem response to climate change. Ecological Complexity 40, p.123-142, 2019.

POTTER, P. E. Significance and Origin of Big Rivers. The Journal of Geology, Vol. 86, 1, p.13-33, 1978.

RABASSA, J. Gondwana paleolandscapes: Long-term landscape evolution, genesis, distribution and age. Geociencias, v 29, n 4, p.541-570, 2010.

SANTOS, D.S.; REYNARD, E.; MANSUR, K.L.; SEOANE, J.C.S. The Specificities of Geomorphosites and Their Influence on Assessment Procedures: a Methodological Comparison. Geoheritage 12, p.2045–2064, 2019.

SANTOS, D.S.; MANSUR, K.L.; SEOANE, J.C.S. ET AL., Methodological Proposal for the Inventory and Assessment of Geomorphosites: An Integrated Approach focused on Territorial Management and Geoconservation. Environmental Management 66, p.476–497, 2020.

SCHOBBENHAUS C.; WINGE, M. SIGEP - Comissão Brasileira de Sítios Geológicos e Paleobiológicos (2012) http://sigep.cprm.gov.br/

SCHOBBENHAUS C; BERBERT-BORN, G.M. GEOSSIT - Sistema de Cadastro e Quantificação de Geossítios e Sítios da Geodiversidade (2021). https://www.cprm.gov.br/geossit/ (accessed: 27/06/2021).

TARDY. Y.; ROQUIN, C. Dérive des continents: paléoclimats et alterations tropicales. Éditions BRGM, Orléans, France. ISBN 2-7154-0865-2, 1998.

TAYLOR, G.; EGGLETON, R.A. Regolith Geology and Geomorphology. John Wiley Ltd, UK, p.375, 2001.

THOMAS, M. F. Evidence for high energy, landforming events on the central African plateau: eastern province Zambia. Zeitschrift für Geomorphologie NF 43, p.273-297, 1999.

THOMAS, M. F.; MURRAY, A.S. On the age and significance of Quaternary colluvium in eastern Zambia. Palaeoecology of Africa 27, p.117-133, 2001.

THOMAS, M. F. Landscape sensitivity to rapid environmental change – a Quaternary perspective with examples from tropical areas. Catena 55, p.107-124, 2004.

THOMAS, M. F. Understanding the impacts of Late Quaternary climate change in tropical and sub- tropical regions. Geomorphology 101 p.146–158, 2008.

THOMAS, M. F. New keywords in the geosciences – some conceptual and scientific issues. Revista do Instituto Geológico, São Paulo 37, p.1-12, 2016.

Published
2021-07-15
How to Cite
THOMAS, M. F. GEOSITES AND GEOSYSTEMS IN QUATERNARY AND DYNAMIC LANDSCAPES – CASE STUDIES FROM A CRATONIC SETTING AND THEIR WIDER SIGNIFICANCE. William Morris Davis – Revista de Geomorfologia, v. 2, n. 1, p. 1-13, 15 Jul. 2021.