Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave

L. Bruce Railsback; Susan Kraft; Fuyuan Liang; George A. Brook; Eugene Marais; Hai Cheng; R. Lawrence Edwards

doi:10.1016/j.palaeo.2019.109348

Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave

L. Bruce Railsback, Susan Kraft, Fuyuan Liang, George A. Brook, Eugene Marais, Hai Cheng, R. Lawrence Edwards

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Dating by the ²³⁰Th method indicates that Stalagmite DANf from Dante Cave in northern Namibia, in the Summer Rainfall Zone (SRZ) of southern Africa, formed about 92 ka, at the boundary of Marine Isotope Stages (MIS) 5b and 5c. In this dominantly semiarid zone, stalagmite growth may be evidence of a relatively wetter period, and trends in DANf's mineralogy and its C, O, and U isotope ratios further support formation in a period wetter than those before or after its formation. DANf's time of formation at 92 ka, like other wet periods in the SRZ of southern Africa over the most recent 100 kyr, coincides with a maximum in January insolation at 30°S that brought the SRZ, and more generally the tropical rain belt, farther south than before or after.

Original language	English (US)
Article number	109348
Journal	Palaeogeography, Palaeoclimatology, Palaeoecology
Volume	535
DOIs	https://doi.org/10.1016/j.palaeo.2019.109348
State	Published - Dec 1 2019
Externally published	Yes

Bibliographical note

Funding Information:
Mr. Jurg-Reiner Otto and Dr. Renate Otto allowed access to the cave. Relevant permits to carry out research on stalagmites were granted by the National Heritage Council, the Ministry of Environment and the Commissioner of Mines in Namibia. Dr. Paul Schroeder of the Department of Geology of the University of Georgia generously allowed use of the X-ray Diffractometer in his laboratory. Funding of the stable isotope analyses was supported by the Department of Geology of the University of Georgia, and travel for radiometric dating was supported by the Franklin College of Arts and Sciences of the University of Georgia. The research was supported by National Science Foundation grants #0002193 and #0725090 to Brook.

Funding Information:
Mr. Jurg-Reiner Otto and Dr. Renate Otto allowed access to the cave. Relevant permits to carry out research on stalagmites were granted by the National Heritage Council, the Ministry of Environment and the Commissioner of Mines in Namibia. Dr. Paul Schroeder of the Department of Geology of the University of Georgia generously allowed use of the X-ray Diffractometer in his laboratory. Funding of the stable isotope analyses was supported by the Department of Geology of the University of Georgia , and travel for radiometric dating was supported by the Franklin College of Arts and Sciences of the University of Georgia . The research was supported by National Science Foundation grants #0002193 and #0725090 to Brook.

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

Africa
MIS 5c
Orbital forcing
Pleistocene
Southern Hemisphere
Speleothem
Summer Rainfall Zone
Tropical rain belt

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.palaeo.2019.109348

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Railsback, L. B., Kraft, S., Liang, F., Brook, G. A., Marais, E., Cheng, H., & Edwards, R. L. (2019). Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave. Palaeogeography, Palaeoclimatology, Palaeoecology, 535, Article 109348. https://doi.org/10.1016/j.palaeo.2019.109348

Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave. / Railsback, L. Bruce; Kraft, Susan; Liang, Fuyuan et al.
In: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 535, 109348, 01.12.2019.

Research output: Contribution to journal › Article › peer-review

Railsback, LB, Kraft, S, Liang, F, Brook, GA, Marais, E, Cheng, H & Edwards, RL 2019, 'Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave', Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 535, 109348. https://doi.org/10.1016/j.palaeo.2019.109348

Railsback LB, Kraft S, Liang F, Brook GA, Marais E, Cheng H et al. Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave. Palaeogeography, Palaeoclimatology, Palaeoecology. 2019 Dec 1;535:109348. doi: 10.1016/j.palaeo.2019.109348

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title = "Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave",

abstract = "Dating by the 230Th method indicates that Stalagmite DANf from Dante Cave in northern Namibia, in the Summer Rainfall Zone (SRZ) of southern Africa, formed about 92 ka, at the boundary of Marine Isotope Stages (MIS) 5b and 5c. In this dominantly semiarid zone, stalagmite growth may be evidence of a relatively wetter period, and trends in DANf's mineralogy and its C, O, and U isotope ratios further support formation in a period wetter than those before or after its formation. DANf's time of formation at 92 ka, like other wet periods in the SRZ of southern Africa over the most recent 100 kyr, coincides with a maximum in January insolation at 30°S that brought the SRZ, and more generally the tropical rain belt, farther south than before or after.",

keywords = "Africa, MIS 5c, Orbital forcing, Pleistocene, Southern Hemisphere, Speleothem, Summer Rainfall Zone, Tropical rain belt",

author = "Railsback, {L. Bruce} and Susan Kraft and Fuyuan Liang and Brook, {George A.} and Eugene Marais and Hai Cheng and Edwards, {R. Lawrence}",

note = "Funding Information: Mr. Jurg-Reiner Otto and Dr. Renate Otto allowed access to the cave. Relevant permits to carry out research on stalagmites were granted by the National Heritage Council, the Ministry of Environment and the Commissioner of Mines in Namibia. Dr. Paul Schroeder of the Department of Geology of the University of Georgia generously allowed use of the X-ray Diffractometer in his laboratory. Funding of the stable isotope analyses was supported by the Department of Geology of the University of Georgia, and travel for radiometric dating was supported by the Franklin College of Arts and Sciences of the University of Georgia. The research was supported by National Science Foundation grants #0002193 and #0725090 to Brook. Funding Information: Mr. Jurg-Reiner Otto and Dr. Renate Otto allowed access to the cave. Relevant permits to carry out research on stalagmites were granted by the National Heritage Council, the Ministry of Environment and the Commissioner of Mines in Namibia. Dr. Paul Schroeder of the Department of Geology of the University of Georgia generously allowed use of the X-ray Diffractometer in his laboratory. Funding of the stable isotope analyses was supported by the Department of Geology of the University of Georgia , and travel for radiometric dating was supported by the Franklin College of Arts and Sciences of the University of Georgia . The research was supported by National Science Foundation grants #0002193 and #0725090 to Brook. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

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AU - Railsback, L. Bruce

AU - Kraft, Susan

AU - Liang, Fuyuan

AU - Brook, George A.

AU - Marais, Eugene

AU - Cheng, Hai

AU - Edwards, R. Lawrence

N1 - Funding Information: Mr. Jurg-Reiner Otto and Dr. Renate Otto allowed access to the cave. Relevant permits to carry out research on stalagmites were granted by the National Heritage Council, the Ministry of Environment and the Commissioner of Mines in Namibia. Dr. Paul Schroeder of the Department of Geology of the University of Georgia generously allowed use of the X-ray Diffractometer in his laboratory. Funding of the stable isotope analyses was supported by the Department of Geology of the University of Georgia, and travel for radiometric dating was supported by the Franklin College of Arts and Sciences of the University of Georgia. The research was supported by National Science Foundation grants #0002193 and #0725090 to Brook. Funding Information: Mr. Jurg-Reiner Otto and Dr. Renate Otto allowed access to the cave. Relevant permits to carry out research on stalagmites were granted by the National Heritage Council, the Ministry of Environment and the Commissioner of Mines in Namibia. Dr. Paul Schroeder of the Department of Geology of the University of Georgia generously allowed use of the X-ray Diffractometer in his laboratory. Funding of the stable isotope analyses was supported by the Department of Geology of the University of Georgia , and travel for radiometric dating was supported by the Franklin College of Arts and Sciences of the University of Georgia . The research was supported by National Science Foundation grants #0002193 and #0725090 to Brook. Publisher Copyright: © 2019 Elsevier B.V.

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N2 - Dating by the 230Th method indicates that Stalagmite DANf from Dante Cave in northern Namibia, in the Summer Rainfall Zone (SRZ) of southern Africa, formed about 92 ka, at the boundary of Marine Isotope Stages (MIS) 5b and 5c. In this dominantly semiarid zone, stalagmite growth may be evidence of a relatively wetter period, and trends in DANf's mineralogy and its C, O, and U isotope ratios further support formation in a period wetter than those before or after its formation. DANf's time of formation at 92 ka, like other wet periods in the SRZ of southern Africa over the most recent 100 kyr, coincides with a maximum in January insolation at 30°S that brought the SRZ, and more generally the tropical rain belt, farther south than before or after.

AB - Dating by the 230Th method indicates that Stalagmite DANf from Dante Cave in northern Namibia, in the Summer Rainfall Zone (SRZ) of southern Africa, formed about 92 ka, at the boundary of Marine Isotope Stages (MIS) 5b and 5c. In this dominantly semiarid zone, stalagmite growth may be evidence of a relatively wetter period, and trends in DANf's mineralogy and its C, O, and U isotope ratios further support formation in a period wetter than those before or after its formation. DANf's time of formation at 92 ka, like other wet periods in the SRZ of southern Africa over the most recent 100 kyr, coincides with a maximum in January insolation at 30°S that brought the SRZ, and more generally the tropical rain belt, farther south than before or after.

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ER -

Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave

Abstract

Bibliographical note

Keywords

UN SDGs

Publisher link

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Cite this

Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave

Abstract

Bibliographical note

Keywords

UN SDGs

Publisher link

Find It

Other files and links

Fingerprint

Cite this

Control of insolation on stalagmite growth, rainfall, and migration of the tropical rain belt in northern Namibia over the last 100 kyr, as suggested by a rare MIS 5b-5c stalagmite from Dante Cave