KarstBase a bibliography database in karst and cave science.
Featured articles from Cave & Karst Science Journals
Characterization of minothems at Libiola (NW Italy): morphological, mineralogical, and geochemical study, Carbone Cristina; Dinelli Enrico; De Waele Jo
Chemistry and Karst, White, William B.
The karst paradigm: changes, trends and perspectives, Klimchouk, Alexander
Long-term erosion rate measurements in gypsum caves of Sorbas (SE Spain) by the Micro-Erosion Meter method, Sanna, Laura; De Waele, Jo; Calaforra, José Maria; Forti, Paolo
The use of damaged speleothems and in situ fault displacement monitoring to characterise active tectonic structures: an example from Zapadni Cave, Czech Republic , Briestensky, Milos; Stemberk, Josef; Rowberry, Matt D.;
Featured articles from other Geoscience Journals
Karst environment, Culver D.C.
Mushroom Speleothems: Stromatolites That Formed in the Absence of Phototrophs, Bontognali, Tomaso R.R.; D’Angeli Ilenia M.; Tisato, Nicola; Vasconcelos, Crisogono; Bernasconi, Stefano M.; Gonzales, Esteban R. G.; De Waele, Jo
Calculating flux to predict future cave radon concentrations, Rowberry, Matt; Marti, Xavi; Frontera, Carlos; Van De Wiel, Marco; Briestensky, Milos
Microbial mediation of complex subterranean mineral structures, Tirato, Nicola; Torriano, Stefano F.F;, Monteux, Sylvain; Sauro, Francesco; De Waele, Jo; Lavagna, Maria Luisa; D’Angeli, Ilenia Maria; Chailloux, Daniel; Renda, Michel; Eglinton, Timothy I.; Bontognali, Tomaso Renzo Rezio
Evidence of a plate-wide tectonic pressure pulse provided by extensometric monitoring in the Balkan Mountains (Bulgaria), Briestensky, Milos; Rowberry, Matt; Stemberk, Josef; Stefanov, Petar; Vozar, Jozef; Sebela, Stanka; Petro, Lubomir; Bella, Pavel; Gaal, Ludovit; Ormukov, Cholponbek;
Journal of Sedimentary Research, 2006, Vol 76, Issue 0, p. 292-309
Palustrine Deposits on a Late Devonian Coastal Plain--Sedimentary Attributes and Implications for Concepts of Carbonate Sequence Stratigraphy
Macneil Alex J. , Jones Brian,
Abstract:
Palustrine deposits in coastal environments can cover thousands of square kilometers and are stratigraphically important. Palustrine deposits that originated in supratidal marshes can be used to track shifts in the shoreline position, whereas palustrine deposits that formed in marshes above the peritidal realm are indicative of subaerial unconformities. Despite the importance of these deposits, there are few documented examples of ancient coastal palustrine deposits, and their sedimentary attributes remain poorly understood. Misinterpretation of coastal palustrine deposits as marine deposits, or calcrete, may partly explain this situation. The Upper Devonian Alexandra Formation, exposed in the Northwest Territories of Canada, is formed of two reef complexes that are separated by a Type I sequence boundary. At the landward part of the platform, this boundary is marked by a succession of coastal-plain deposits that is ~ 50 cm thick. The most distinct aspect of this succession are palustrine deposits characterized by charophytes, skeletal (Rivularia) stromatolites, and various pedogenic features including complex crack networks, root traces, and authigenic kaolinite. Karst features and calcrete, generally regarded as typical indicators of subaerial exposure, are not found. This study highlights the sedimentary attributes that can be used to identify ancient palustrine deposits in marine coastal regions, distinguish these deposits from calcrete, and demonstrates their sequence stratigraphic significance, when found in marine limestone successions. It clearly demonstrates that palustrine deposits, like those found in the Alexandra Formation, should be considered indicative of subaerial unconformities and sequence boundaries, in the same manner as karst and calcrete
Palustrine deposits in coastal environments can cover thousands of square kilometers and are stratigraphically important. Palustrine deposits that originated in supratidal marshes can be used to track shifts in the shoreline position, whereas palustrine deposits that formed in marshes above the peritidal realm are indicative of subaerial unconformities. Despite the importance of these deposits, there are few documented examples of ancient coastal palustrine deposits, and their sedimentary attributes remain poorly understood. Misinterpretation of coastal palustrine deposits as marine deposits, or calcrete, may partly explain this situation. The Upper Devonian Alexandra Formation, exposed in the Northwest Territories of Canada, is formed of two reef complexes that are separated by a Type I sequence boundary. At the landward part of the platform, this boundary is marked by a succession of coastal-plain deposits that is ~ 50 cm thick. The most distinct aspect of this succession are palustrine deposits characterized by charophytes, skeletal (Rivularia) stromatolites, and various pedogenic features including complex crack networks, root traces, and authigenic kaolinite. Karst features and calcrete, generally regarded as typical indicators of subaerial exposure, are not found. This study highlights the sedimentary attributes that can be used to identify ancient palustrine deposits in marine coastal regions, distinguish these deposits from calcrete, and demonstrates their sequence stratigraphic significance, when found in marine limestone successions. It clearly demonstrates that palustrine deposits, like those found in the Alexandra Formation, should be considered indicative of subaerial unconformities and sequence boundaries, in the same manner as karst and calcrete
Keywords: ancient, calcrete, canada, carbonate, charophytes, coastal, coastal-plain, complex, deposit, deposits, devonian, environment, environments, example, examples, exposure, features, indicator, indicators, karst, karst feature, limestone, marine, northwest-territories, part, platform, reef, region, regions, root, sedimentary, sequence, sequence stratigraphy, stratigraphy, stromatolites, succession, unconformities, unconformity,