Growth and development of notch speleothems from Cayman Brac, British West Indies: Response to variable climatic conditions over the last 125,000 years

Jones, Brian; Zheng, Erjun; Li, Long

doi:10.1016/j.sedgeo.2018.06.005

Cited by 12 publications

(4 citation statements)

References 84 publications

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“…The detailed stratigraphic analysis of speleothems constitutes a fundamental base in the reconstruction of the paleoclimatic conditions of the Quaternary history (e.g., Gázquez and Calaforra, 2016;Martín-Chivelet et al, 2017;Jones et al, 2018). The stalagmite of interest in this study shows growth axis based on the general shape and geometry, despite not having isotopic evidence to establish the age and duration of growth of the speleothem (stalagmite) or to determine if the changes observed in its texture are associated with hiatus.…”

Section: Speleothem Microstratigraphymentioning

confidence: 99%

Mineralogical and chemical characterization of speleothems from the “Doña Lucrecia” cave, Rionegro, Santander (Colombia): A preliminary approach for paleoclimate record

et al. 2023

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The present study concerns the use of speleothems from the “Doña Lucrecia” cave, Rionegro, Santander (Colombia), as a preliminary approach for paleoclimate record. Several speleothems are undoubtedly among the remarkable features of this cavity; for instance, columns, stalactites, stalagmites and fallen blocks. Speleothems contain important evidence of palaeoclimatic information, which can be interpreted through integral petrographical and geochemical analysis. A detailed characterization of stalagmite internal microstratigraphy was carried out. Besides, due to the monotonous carbonate lithology of the region, speleothems are essentially composed of calcite. The results of this research work include the development of capabilities and the production of a map of the karstic system that indicates the origin of the cave, and the most relevant features and facts within it. This cavity represents an important component of the existing geoheritage in the territory that remains hidden without identification and evaluation.

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Section: Speleothem Microstratigraphymentioning

confidence: 99%

Mineralogical and chemical characterization of speleothems from the “Doña Lucrecia” cave, Rionegro, Santander (Colombia): A preliminary approach for paleoclimate record

et al. 2023

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“…13). (D) Comparison of δ 18 O and δ 13 C for terra rossa relative to the δ 18 O versus δ 13 C values from notch speleothems from Cayman Brac (Jones et al ., 2018, fig. 6A).…”

Section: Stable Isotopesmentioning

confidence: 99%

“…For notch speleothems from Cayman Brac, Jones et al . (2018) noted that the δ 13 C values may reflect the influence of: (i) rainfall that controls the type of flora; (ii) temperature that influences biological activity and isotopic equilibrium; (iii) C 3 or C 4 vegetation cover; (iv) bedrock dissolution; and/or (v) extent of CO 2 degassing (Genty et al ., 2001; Cruz et al ., 2006; Mickler et al ., 2006; Cosford et al ., 2009; Cisneros & Caballero, 2011). Similar influences also exist with respect to calcite precipitated in the terra rossa.…”

Section: Origin Of Terra Rossa On the Cayman Islandsmentioning

confidence: 99%

Formation, dispersion and accumulation of terra rossa on the Cayman Islands

Jones

2021

Sedimentology

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Unconsolidated and lithified terra rossa fills surface depressions, joints, fractures and cavities throughout the karst landscapes on the Cayman Islands. The terra rossa is formed from kaolinite, halloysite, vermiculite, hydrotalcite, b€ ohmite, gibbsite, goethite, hematite, anatase, quartz, calcite, dolomite, halite and X-ray amorphous material. Locally, phosphate derived from bird guano and biofragments is present. Lithified terra rossa is characterized by numerous generations of fractures that are lined with clay and filled with multiple phases of calcite cement. There are no obvious geographic or stratigraphic differences between the terra rossa found on the three islands. A residual origin for the terra rossa is unlikely given that the Oligocene to Pleistocene limestone/dolostone bedrock contains <1% non-carbonate material. Detrital sediments cannot be the source because none developed on these islands, given that they are surrounded by deep oceanic waters. The terra rossa probably originated largely from wind-blown volcanic dust or Saharan dust. Various geochemical ratios and rare earth element profiles indicate that that the Cayman terra rossa has a strong affinity to Saharan dust that is frequently blown into the Caribbean region each year. The Cayman terra rossa is characterized by SiO 2 /Al 2 O 3 ratios (<1.1) that are significantly lower than those associated with terra rossa on other islands, such as Jamaica and Barbados. The low SiO 2 /Al 2 O 3 ratios of the Cayman terra rossa is due, at least in part, to the fact that quartz is rare to absent. X-ray amorphous material is a common component in many of the Cayman samples. Although difficult to date precisely, the formation of terra rossa on the Cayman Islands appears to have been an ongoing process for at least the last 5 Myr. This time frame is consistent with the origin of the Sahara Desert that came into existence with aridification of North Africa about 5 Ma.

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“…For hundreds of thousands of years, the drops of rainwater that fall on the surface are beginning to open up mainly along fissures or fractures or through porous and permeable strata to reach the karstic cavities (e.g., Audra and Palmer, 2011), generating different types of speleothems (stalagmites, stalactites, and flowstones), which have become important climatic archives of continental climate variability and a novel area of paleoclimatic research (e.g., Mcdermott, 2004;Fairchild et al, 2006;Lachniet, 2009). Stalagmites, in particular are of great importance in paleoclimatic studies (e.g., Turgeon and Lundberg, 2001;Jones et al, 2018;Guo and Zhou, 2019) since they preserve an isotopic record of great importance to reconstruct the recent paleoclimatic history since they constitute a valuable archive on how the rain patterns have changed during the quaternary. They grow in protected enviroments that have often escaped to the radical alterations of the surface resulting from events such as glaciation, these interesting calcareous formations have become one of the most reliable archives for the understanding of past terrestrial climatic conditions due to their absolute chronologies, their continuous or semi-continuous deposition and their wide global distribution (e.g., Bradley 1999;Fairchild and Baker, 2012;Wong and Breecker, 2015;Denniston and Luetscher, 2017;Martín-Chivelet et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Integration of Geological, Mineralogical and Geochemical Methods in the Characterization of El Nitro and Las Alsacias Caves, Zapatoca (Colombia)

Zafra-Otero¹,

Ríos‒Reyes²

2020

Gest. Ambient.

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The present study integrates geological, mineralogical and geochemical methods in the characterization of the caves: El Nitro and Las Alsacias, from Zapatoca (Colombia). With lithologies dating from the Lower Cretaceous, these cavities reveal a great variety of exokarst geoforms with different types of slips present on the surface, indicating changes in past atmospheric conditions. A great variety of speleothems (endokarstic geoforms) was also found, such as columns, stalactites, stalagmites, among others, which demonstrate a change in calcite saturation in the precipitated water. The morphology of the underground water bodies found showed variations in the dynamics of the karst aquifer (piezometric level and recharge), and it was evidenced that these cavities have structural control. The information obtained in the field (speleothematic catalogs, speleometry, maps, lithostratigraphy and structural data) were validated with atmospheric data and laboratory tests. This research provides new insights into geomorphology (epigeal and hypogeal), hydrogeology and mineralogy; serving as support for future work focused on paleoclimatic reconstruction, tectonic, paleosismic and climate change studies. These cavities represent scientific laboratories of great interest to the academy, since in them phenomena such as global warming and piezometric variations related to atmospheric phenomena can be evidenced.

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Growth and development of notch speleothems from Cayman Brac, British West Indies: Response to variable climatic conditions over the last 125,000 years

Cited by 12 publications

References 84 publications

Mineralogical and chemical characterization of speleothems from the “Doña Lucrecia” cave, Rionegro, Santander (Colombia): A preliminary approach for paleoclimate record

Mineralogical and chemical characterization of speleothems from the “Doña Lucrecia” cave, Rionegro, Santander (Colombia): A preliminary approach for paleoclimate record

Formation, dispersion and accumulation of terra rossa on the Cayman Islands

Integration of Geological, Mineralogical and Geochemical Methods in the Characterization of El Nitro and Las Alsacias Caves, Zapatoca (Colombia)

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Growth and development of notch speleothems from Cayman Brac, British West Indies: Response to variable climatic conditions over the last 125,000 years

Cited by 12 publications

References 84 publications

Mineralogical and chemical characterization of speleothems from the “Doña Lucrecia” cave, Rionegro, Santander (Colombia): A preliminary approach for paleoclimate record

Mineralogical and chemical characterization of speleothems from the “Doña Lucrecia” cave, Rionegro, Santander (Colombia): A preliminary approach for paleoclimate record

Formation, dispersion and accumulation of terra rossa on the Cayman Islands

Integration of Geological, Mineralogical and Geochemical Methods in the Characterization of El Nitro and Las Alsacias Caves, Zapatoca (Colombia)

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Growth and development of notch speleothems from Cayman Brac, British West Indies: Response to variable climatic conditions over the last 125,000 years