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eWISA
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HARTENBOS:
MAIN INDEX |
ALPHABETICAL
LIST OF RIVERS |
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Map
of the HARTENBOS River |
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TOPOGRAPHY
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GEOLOGY
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The bottom material in the estuary mouth
consists chiefly of fine to medium grained marine sand.
Terrestrial sediments (black mud and silt) are found upstream of the
railway bridge in the meanders and channel system of the upper estuary.
(Ref 1)
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The Hartenbos riverbed, from the mouth to
about 10km upstream of the mouth, lies on Tertiary to Quaternary
alluvial valley deposits. To the north and south of these
deposits, Cretaceous to Tertiary deposits of conglomerate, sandstone,
siltstone and clay outcrops are found
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Just downstream of the Hartebeeskuil
Dam wall the river runs through an area of whitish-weathering
quartz sandstone described as medium to coarse grained quartzitic and
massive, of the Table Mountain Series.
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Immediately to the south of the estuary lies
an area dominated by Dwyka tillite and subordinate shale, on which the
town of Hartenbos is situated. To the north and south of the mouth
of the estuary, aeolian sands overlie the earlier geological formations
in a narrow strip along the coast. (Ref 1)
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SOILS
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References |
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Ref 1: ESTUARIES OF THE CAPE:
REPORT NO.11 HARTENBOS(CMS1), CSIR RESEARCH REPORT 410- AEF Heydorn, JR
Grindley
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Useful
links |
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