LAKE DEBO:
A Beacon Through the Ages

LAKE  DEBO

Design

Results:

Results:  Statistical Basis

Early Patterns

Early Patterns

Later Patterns

Later Patterns

The Millieu

Barbell-Lake Form       O~~~~~~~O
Ptolemy Ulm 1482

Barbell-Lake Form       O~~~~~~~O
St. Sever Beatus of Liebana  1060 AD

Barbell-Lake Form        O~~~~~~~O
St. Jerome  1150 AD  (original c390 AD)

Barbell-Lake Form        O~~~~~~~O
Cotton Anglo-Saxon Mappamundi 1080 AD

Barbell-Lake Form       O~~~~~~~O
Guidonis of Pisa  1119 AD

Barbell-Lake Form         O~~~~~~~O
Imago Mundi,  Mainz/Autun 1110 AD

Barbell-Lake Form         O~~~~~~~O
Hereford Map 1290 AD

Braided-Island Form    >~~~(O)~~~<
Idrisi-Pococke 1450 AD (original 1154 AD)

Braided-Island Form    >~~~(O)~~~<
Vesconte Mappamundi 1321 AD

Braided-Island Form    >~~~(O)~~~<
Sanudo 1320

Braided-Island Form    >~~~(O)~~~<
Cresques 1375

Braided-Lake Form      >~~~(O)~~~<
Medici-Gaddiano, Florence  c1400

Braided-Lake Form      >~~~(O)~~~<
Giovanni Leardo, 1448

Braided-Island Form    >~~~(O)~~~<
Mappamunde Estense-Modena 1450

Braided-Island Form    >~~~(O)~~~<
Freducci d’Ancona 1497

Braided-Island Form    >~~~(O)~~~<
Walsperger/Zeitz Mappamundi 1470 AD

Braided-Island Form    >~~~(O)~~~<
Andreas Bianco 1440

Braided-Island Form
>~~~(O)~~~<
Martin Behaim Hemispheres 1492

Braided-Island Form    >~~~(O)~~~<
Robert Thorne 1527

Braided-Island Form    >~~~(O)~~~<
Fra Mauro 1459

Braided-Island Form    >~~~(O)~~~<
Fra Mauro 1459

Gastaldi Guarda Form    >~~(^)~~~<
Gastaldi-Ramusio  1554

Gastaldi Guarda Form    >~~(^)~~~<
Gastaldi Wall-Map 1564

The Toponyms

The Toponyms

The Textual Origins

Arabic Origins

Mediterranean Origins

African Origins

The Dissemination      >~~(^)~~~<
Gastaldi-Forlani-Lafreri  1566

The Dissemination
Ortelius  1570

The Dissemination
Sanson 1690

The Dissemination
Gierson-Moll  1764

The Definitive Revisions

The Separation Form
Del’Isle  1722                           Debo(IND)

The Separation Form
D’Anville-Bolton 1787         Debo (IND)

The Definitive Revision
Park-Rennell  1799 and Barth 1853

The Physical Basis

The Archeological Basis
Jenne-Jeno  1981

The Archeologic Sites
McIntosh, Excavations at Jenne-Jeno 1981

Pottery Phases
250 BC—1400 AD
McIntosh,
Excavations at
Jenne-Jeno 1981

Applications

Slide 53

The Alternatives

The Alternatives:
Debo-Guarda                       Tchad-Borno

The Alternatives
Debo/Guarda                       Tchad/Borno

Geometric Designations:
       Debo-Guarda                    Tchad-Borno

Transition Forms
Contarini  1506

Transition Forms
Demongenes Globe Gore 1552

The Cartographic Origins