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عمومی::
خط ساحلی دیرینه
Paleo-lake evidences, like paleo-shorelines, sediments, and fossils, were found by Jaeger (1913) and Reck (1921) to the east of Lake Manyara already in the beginning of the twenti- eth century.
The Paleo-shorelines of Lake Manyara
Paleo-shorelines and terraces result from differ- ent stages of quaternary lake-level high stands, which were already identified by various researchers in the early twentieth century (Uhlig 1909; Jaeger 1913; Leakey 1931).
The 14C and Th/U dating of stromatolites of a distinct paleo-shoreline level helped in identifying different humid periods at 22 ka, 27-23 ka, 35-32 ka, 90 ka, and 140 ka (Hillaire-Marcel et al. 1986; Casanova and Hillaire-Marcel 1992; Casanova 1986).
Paleo-shorelines appear as small-scale landforms, which disappear in optical remote sensing images because of the uniform surface cover compared to their surroundings.
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