Initial results are presented on the early Christian church of Notre Dame de Baudes located near ... more Initial results are presented on the early Christian church of Notre Dame de Baudes located near the village of Labastide-du-Temple, France. The church was discovered in the first year of a multi-year systematic archaeological siteless survey of the interfluve between the Garonne and Tarn River valleys in anticipation of its future development during construction of the Toulouse-to-Paris TGV train line. The Midi-Pyrénées Region containing the interfluve is archaeologically and historically rich, but lying between major and monumental archaeological sites in the region has not been subject to much systematic archaeological or historical investigation. The church remains were last recorded visible between 1576 and 1662 CE, and there is no record of its precise location, size or other characteristics. We summarize results of a ground penetrating radar survey and vertical sampling of sediment for an area ca. 2700 m 2 of floodplain under agriculture that combined with historical archive results indicates the church was in existence by at least 1100 CE. Proximity of the church remains to those of a third or fourth century Gallo-Roman villa are suggestive of a linkage between the two sites offering the possibility these sites can inform on the Medieval evolution of this landscape. The results also provide a cautionary note on negative results from archaeological surface surveys given the rate at which alluvium has accumulated in the interfluve.
Geoarchaeology-an International Journal, Jul 1, 1992
Geoarchaeological studies of alluvial fans in the northern Sny Bottom (Upper Mississippi River va... more Geoarchaeological studies of alluvial fans in the northern Sny Bottom (Upper Mississippi River valley) focused on distal fan lobe processes, the effects of small‐scale landscape change on prehistoric locational decisions, and the resulting structure of the archaeological record. Aerial imagery together with coring and trenching of paleochannels on distal lobes found that frequent channel avulsion (1) produced abrupt landform/habitat changes and (2) shifted the primary loci of sediment deposition on fans through time. Analysis of wood charcoal from prehistoric occupations indicates that vegetation succession during post‐avulsion overbank aggradation along a new channel was characterized by a shift from Fraxinus‐dominated to mesophytic forest. Results also indicate that use of fans by Early Woodland (ca. 2550–2100 B.P.) and other foragers centered on portions along active channels. Shifting depositional loci on fans led to surfaces and depositional units of varying age, and hence a complex stratigraphic record of Holocene occupations.
Mounting evidence indicates that mixed forests of the humid-temperate western Pyrenees mountains ... more Mounting evidence indicates that mixed forests of the humid-temperate western Pyrenees mountains were converted by human agency to managed grasslands by at least the late Neolithic. We first realized major ramifications of the conversation process from pronounced differences we observed between soil profiles of ancient pastures and old-growth forests in otherwise similar landscape positions. Subsequently through radiocarbon dating of colluvial deposits we established a chronology for anthropic manipulation of the biotic factor of pedogenesis resulting in the creation of new soil materials, processes and functions. Regionaland biome-scale paleoecological analyses and archaeological syntheses suggest that it was Neolithic agropastoral land use that initiated anthropization of mountain landscapes of the western Pyrenees. However, such macroscopic views of human behavior cannot reveal the contingency and agency on which human causality rests. We have thus followed a complementary place-...
Abstract Initial results are presented on the early Christian church of Notre Dame de Baudes loca... more Abstract Initial results are presented on the early Christian church of Notre Dame de Baudes located near the village of Labastide-du-Temple, France. The church was discovered in the first year of a multi-year systematic archaeological siteless survey of the interfluve between the Garonne and Tarn River valleys in anticipation of its future development during construction of the Toulouse-to-Paris TGV train line. The Midi-Pyrenees Region containing the interfluve is archaeologically and historically rich, but lying between major and monumental archaeological sites in the region has not been subject to much systematic archaeological or historical investigation. The church remains were last recorded visible between 1576 and 1662 CE, and there is no record of its precise location, size or other characteristics. We summarize results of a ground penetrating radar survey and vertical sampling of sediment for an area ca. 2700 m 2 of floodplain under agriculture that combined with historical archive results indicates the church was in existence by at least 1100 CE. Proximity of the church remains to those of a third or fourth century Gallo-Roman villa are suggestive of a linkage between the two sites offering the possibility these sites can inform on the Medieval evolution of this landscape. The results also provide a cautionary note on negative results from archaeological surface surveys given the rate at which alluvium has accumulated in the interfluve.
The water-quality effects of low-density rural land-use activities are understudied but important... more The water-quality effects of low-density rural land-use activities are understudied but important because of large rural land coverage. We review and synthesize spatially extensive studies of oligotrophic mountain streams in the rural Southern Appalachian Mountains, concluding that rural land-use activities significantly degrade water quality through altered and mostly enhanced landscape–stream connections, despite high forest retention. Some connections (insolation, organic inputs, root–channel interactions, stream–field connectivity, individual landowner discharges) are controlled by near-stream land-use activities, whereas others (reduced nitrogen uptake and cycling, enhanced biological nitrogen fixation, nutrient subsidy, runoff from compacted soils, road runoff delivery) are controlled by basin-wide land use. These connections merge to alter basal resources and shift fish, salamander, and invertebrate assemblages toward species tolerant of higher turbidity and summer temperatur...
Journal of the North American Benthological Society, 2003
Page 1. JN Am. Benthol. Soc., 2003, 22(2):292-307 ? 2003 by The North American Benthological Soci... more Page 1. JN Am. Benthol. Soc., 2003, 22(2):292-307 ? 2003 by The North American Benthological Society Habitat-specific responses of stream insects to land cover disturbance: biological consequences and monitoring implications ...
Journal of the American Water Resources Association, 1994
... 1896), and mercury was commonly used to clean sluice boxes of fine gold particles (Crick-may,... more ... 1896), and mercury was commonly used to clean sluice boxes of fine gold particles (Crick-may, 1933). Mercury waste probably was common. An 1885 United States census report on precious metals states that up to 38 percent of the mercury used in gold mining escaped as ...
Page 1. Paleochannels indicating wet climate and lack of response to lower sea level, southeast G... more Page 1. Paleochannels indicating wet climate and lack of response to lower sea level, southeast Georgia David S. Leigh Department of Geography, University of Georgia, Athens, Georgia 30602-2502 Thomas P. Feeney ABSTRACT ...
... The Upper Mississippi Valley Roxana Silt generally consists of brown (10YR 4/3) to dark yello... more ... The Upper Mississippi Valley Roxana Silt generally consists of brown (10YR 4/3) to dark yellowish brown (10YR 4/4) silt loam to clayey silt loam that is not calcareous and has weak to moderate platy or blocky soil struc-tures. ...
Initial results are presented on the early Christian church of Notre Dame de Baudes located near ... more Initial results are presented on the early Christian church of Notre Dame de Baudes located near the village of Labastide-du-Temple, France. The church was discovered in the first year of a multi-year systematic archaeological siteless survey of the interfluve between the Garonne and Tarn River valleys in anticipation of its future development during construction of the Toulouse-to-Paris TGV train line. The Midi-Pyrénées Region containing the interfluve is archaeologically and historically rich, but lying between major and monumental archaeological sites in the region has not been subject to much systematic archaeological or historical investigation. The church remains were last recorded visible between 1576 and 1662 CE, and there is no record of its precise location, size or other characteristics. We summarize results of a ground penetrating radar survey and vertical sampling of sediment for an area ca. 2700 m 2 of floodplain under agriculture that combined with historical archive results indicates the church was in existence by at least 1100 CE. Proximity of the church remains to those of a third or fourth century Gallo-Roman villa are suggestive of a linkage between the two sites offering the possibility these sites can inform on the Medieval evolution of this landscape. The results also provide a cautionary note on negative results from archaeological surface surveys given the rate at which alluvium has accumulated in the interfluve.
Geoarchaeology-an International Journal, Jul 1, 1992
Geoarchaeological studies of alluvial fans in the northern Sny Bottom (Upper Mississippi River va... more Geoarchaeological studies of alluvial fans in the northern Sny Bottom (Upper Mississippi River valley) focused on distal fan lobe processes, the effects of small‐scale landscape change on prehistoric locational decisions, and the resulting structure of the archaeological record. Aerial imagery together with coring and trenching of paleochannels on distal lobes found that frequent channel avulsion (1) produced abrupt landform/habitat changes and (2) shifted the primary loci of sediment deposition on fans through time. Analysis of wood charcoal from prehistoric occupations indicates that vegetation succession during post‐avulsion overbank aggradation along a new channel was characterized by a shift from Fraxinus‐dominated to mesophytic forest. Results also indicate that use of fans by Early Woodland (ca. 2550–2100 B.P.) and other foragers centered on portions along active channels. Shifting depositional loci on fans led to surfaces and depositional units of varying age, and hence a complex stratigraphic record of Holocene occupations.
Mounting evidence indicates that mixed forests of the humid-temperate western Pyrenees mountains ... more Mounting evidence indicates that mixed forests of the humid-temperate western Pyrenees mountains were converted by human agency to managed grasslands by at least the late Neolithic. We first realized major ramifications of the conversation process from pronounced differences we observed between soil profiles of ancient pastures and old-growth forests in otherwise similar landscape positions. Subsequently through radiocarbon dating of colluvial deposits we established a chronology for anthropic manipulation of the biotic factor of pedogenesis resulting in the creation of new soil materials, processes and functions. Regionaland biome-scale paleoecological analyses and archaeological syntheses suggest that it was Neolithic agropastoral land use that initiated anthropization of mountain landscapes of the western Pyrenees. However, such macroscopic views of human behavior cannot reveal the contingency and agency on which human causality rests. We have thus followed a complementary place-...
Abstract Initial results are presented on the early Christian church of Notre Dame de Baudes loca... more Abstract Initial results are presented on the early Christian church of Notre Dame de Baudes located near the village of Labastide-du-Temple, France. The church was discovered in the first year of a multi-year systematic archaeological siteless survey of the interfluve between the Garonne and Tarn River valleys in anticipation of its future development during construction of the Toulouse-to-Paris TGV train line. The Midi-Pyrenees Region containing the interfluve is archaeologically and historically rich, but lying between major and monumental archaeological sites in the region has not been subject to much systematic archaeological or historical investigation. The church remains were last recorded visible between 1576 and 1662 CE, and there is no record of its precise location, size or other characteristics. We summarize results of a ground penetrating radar survey and vertical sampling of sediment for an area ca. 2700 m 2 of floodplain under agriculture that combined with historical archive results indicates the church was in existence by at least 1100 CE. Proximity of the church remains to those of a third or fourth century Gallo-Roman villa are suggestive of a linkage between the two sites offering the possibility these sites can inform on the Medieval evolution of this landscape. The results also provide a cautionary note on negative results from archaeological surface surveys given the rate at which alluvium has accumulated in the interfluve.
The water-quality effects of low-density rural land-use activities are understudied but important... more The water-quality effects of low-density rural land-use activities are understudied but important because of large rural land coverage. We review and synthesize spatially extensive studies of oligotrophic mountain streams in the rural Southern Appalachian Mountains, concluding that rural land-use activities significantly degrade water quality through altered and mostly enhanced landscape–stream connections, despite high forest retention. Some connections (insolation, organic inputs, root–channel interactions, stream–field connectivity, individual landowner discharges) are controlled by near-stream land-use activities, whereas others (reduced nitrogen uptake and cycling, enhanced biological nitrogen fixation, nutrient subsidy, runoff from compacted soils, road runoff delivery) are controlled by basin-wide land use. These connections merge to alter basal resources and shift fish, salamander, and invertebrate assemblages toward species tolerant of higher turbidity and summer temperatur...
Journal of the North American Benthological Society, 2003
Page 1. JN Am. Benthol. Soc., 2003, 22(2):292-307 ? 2003 by The North American Benthological Soci... more Page 1. JN Am. Benthol. Soc., 2003, 22(2):292-307 ? 2003 by The North American Benthological Society Habitat-specific responses of stream insects to land cover disturbance: biological consequences and monitoring implications ...
Journal of the American Water Resources Association, 1994
... 1896), and mercury was commonly used to clean sluice boxes of fine gold particles (Crick-may,... more ... 1896), and mercury was commonly used to clean sluice boxes of fine gold particles (Crick-may, 1933). Mercury waste probably was common. An 1885 United States census report on precious metals states that up to 38 percent of the mercury used in gold mining escaped as ...
Page 1. Paleochannels indicating wet climate and lack of response to lower sea level, southeast G... more Page 1. Paleochannels indicating wet climate and lack of response to lower sea level, southeast Georgia David S. Leigh Department of Geography, University of Georgia, Athens, Georgia 30602-2502 Thomas P. Feeney ABSTRACT ...
... The Upper Mississippi Valley Roxana Silt generally consists of brown (10YR 4/3) to dark yello... more ... The Upper Mississippi Valley Roxana Silt generally consists of brown (10YR 4/3) to dark yellowish brown (10YR 4/4) silt loam to clayey silt loam that is not calcareous and has weak to moderate platy or blocky soil struc-tures. ...
... Geoarchaeological studies of alluvial fans in the northern Sny Bottom (Upper Mississippi Rive... more ... Geoarchaeological studies of alluvial fans in the northern Sny Bottom (Upper Mississippi River valley) focused on distal fan lobe processes, the effects of small-scale landscape change on prehistoric locational decisions, and the resulting structure of the archaeologi-cal record. ...
Uploads
Journal Articles & Book Chapters by David Leigh
Papers by David Leigh