New light on the age of the White Nile

Martin Williams; Donald Adamson; John R. Prescott; Frances M. Williams

doi:10.1130/G19801.1

New light on the age of the White Nile

Martin Williams, Donald Adamson, John R. Prescott, Frances M. Williams

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

47 Citations (Scopus)

Abstract

Landsat 5 Thematic Mapper and 7 Enhanced Thematic Mapper imagery reveal lake shorelines in the White Nile valley as far south as lat 10°N. The highest shoreline is at 386 m elevation and was eroded when the White Nile formed a lake as wide as 70 km and >500 km long. Finely laminated green clays laid down on the floor of this lake are overlain by alluvial sands and clays, dated by optically stimulated luminescence as 15 ka to older than 250 ka. The alluvium was deposited during interglacial episodes of stronger summer monsoons and very high White Nile floods. The White Nile paleolake is much older than marine oxygen isotope stage 7 and may have formed ca. 400 ka, during the exceptionally long stage 11 interglacial.

Original language	English
Pages (from-to)	1001-1004
Number of pages	4
Journal	Geology
Volume	31
Issue number	11
DOIs	https://doi.org/10.1130/G19801.1
Publication status	Published - 2003

Keywords

Luminescence dating
Nile
Paleohydrology
Paleolake
Quaternary

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title = "New light on the age of the White Nile",

abstract = "Landsat 5 Thematic Mapper and 7 Enhanced Thematic Mapper imagery reveal lake shorelines in the White Nile valley as far south as lat 10°N. The highest shoreline is at 386 m elevation and was eroded when the White Nile formed a lake as wide as 70 km and >500 km long. Finely laminated green clays laid down on the floor of this lake are overlain by alluvial sands and clays, dated by optically stimulated luminescence as 15 ka to older than 250 ka. The alluvium was deposited during interglacial episodes of stronger summer monsoons and very high White Nile floods. The White Nile paleolake is much older than marine oxygen isotope stage 7 and may have formed ca. 400 ka, during the exceptionally long stage 11 interglacial.",

keywords = "Luminescence dating, Nile, Paleohydrology, Paleolake, Quaternary",

author = "Martin Williams and Donald Adamson and Prescott, {John R.} and Williams, {Frances M.}",

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doi = "10.1130/G19801.1",

language = "English",

volume = "31",

pages = "1001--1004",

journal = "Geology",

issn = "0091-7613",

publisher = "Geological Society of America",

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T1 - New light on the age of the White Nile

AU - Williams, Martin

AU - Adamson, Donald

AU - Prescott, John R.

AU - Williams, Frances M.

PY - 2003

Y1 - 2003

N2 - Landsat 5 Thematic Mapper and 7 Enhanced Thematic Mapper imagery reveal lake shorelines in the White Nile valley as far south as lat 10°N. The highest shoreline is at 386 m elevation and was eroded when the White Nile formed a lake as wide as 70 km and >500 km long. Finely laminated green clays laid down on the floor of this lake are overlain by alluvial sands and clays, dated by optically stimulated luminescence as 15 ka to older than 250 ka. The alluvium was deposited during interglacial episodes of stronger summer monsoons and very high White Nile floods. The White Nile paleolake is much older than marine oxygen isotope stage 7 and may have formed ca. 400 ka, during the exceptionally long stage 11 interglacial.

AB - Landsat 5 Thematic Mapper and 7 Enhanced Thematic Mapper imagery reveal lake shorelines in the White Nile valley as far south as lat 10°N. The highest shoreline is at 386 m elevation and was eroded when the White Nile formed a lake as wide as 70 km and >500 km long. Finely laminated green clays laid down on the floor of this lake are overlain by alluvial sands and clays, dated by optically stimulated luminescence as 15 ka to older than 250 ka. The alluvium was deposited during interglacial episodes of stronger summer monsoons and very high White Nile floods. The White Nile paleolake is much older than marine oxygen isotope stage 7 and may have formed ca. 400 ka, during the exceptionally long stage 11 interglacial.

KW - Luminescence dating

KW - Nile

KW - Paleohydrology

KW - Paleolake

KW - Quaternary

U2 - 10.1130/G19801.1

DO - 10.1130/G19801.1

M3 - Article

SN - 0091-7613

VL - 31

SP - 1001

EP - 1004

JO - Geology

JF - Geology

IS - 11

ER -

New light on the age of the White Nile

Abstract

Keywords

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